 Hello everyone and welcome to our third seminar of the series of the Latin American webinars of physics My name is Jorge Diaz and from the Karlsruhe Institute of Technology in Germany, and I will be your host today Our speaker is Dr. Isabel Pedraza from Benamarita University at Autonomia Equivalent in Mexico Who will check about the Large Haddon Collider and some results from the CMS experiment? She received her PhD from Benamarita University at Autonomia de Puebla, working at CERN After a post-op art position at the University of Wisconsin working for the Adelaide experiment She went back to her alma mater Where she is currently a professor now working for the CMS experiment Isabel taught Isabel's talk today is titled the status of the LXC and results from CMS And we're really happy to have her as our speaker today Let me remind you that you can post questions Just so you can join the discussion. You can write your questions on the comments or using this Google Class Q&A system, and you can also use Twitter with the hashtag LAAWOP So I will not hand you over Isabel Hi. Hello everyone. Sorry Thank you very much for the nice introduction so as he mentioned I will talk about CMS and The later results that were almost presented in Morion all of them and the current status of the LXC and the plans for this Second round that we are starting. So I will start sharing my slides I will start with what we already know since 2012 we at LHC the experiments Atlas and CMS of the LHC Discover a particle in 2012 And after that after A few Few more analysis to see whether this particle that was discovered in 2012 was the Higgs particle And at the end of 2012 at the beginning of 2013 the particle looked like Like the Higgs particle. So the cane interference the cane into the normal ratio as is predicted by the Mechanism of Frans van Higgs and the Nobel Prize was given in 2013 So since we are having a problem with the with the presentation, we're not seeing the slides Yeah, can you just check the chair spring just for a second? We're now seeing the slides Ah, sorry Now you don't know Okay, I'm really sorry then So it's just the first the first slide so So um As I mentioned LHC round one was had a great success uh due to the discovery of the new particle and the confirmation of the Higgs Particle in 2013 And the Nobel Prize given to Frans van Higgs So I will give you a Past introduction about what is the LHC? The LHC is a Hadron collider of 27 kilometers to see the conference And it is underground between 100 meters in most of the cases for the experiments and the collisions that were Were happening in this in this collider during 2010 and 2012 Were between 70 Teleelectron volts on air eight teleelectron volts in total We have around 400 million of collisions per second reduced by the trigger selection. There is around 1% um Of the events that happen in the collisions and it reduces Uh to 500 bends per second. It is in between france and univer And it's uh close to it's the main offices are in switzerland The LHC performance in round one was very very good and the first uh Part of the of the data taking gave us around six in percent of arm of data and in 2012 at eight Teleelectron volts we collected 23 in percent of art of data that gave us around 250 Higgs per event 250 Higgs events per hour And the instantan luminosity It was 7.7 to 10 to 33 And uh, we remember that the nominal big luminosity for the LHC was 10 to the 34 The main challenge during the first front was the many proton The number of pilot of the number of uh vertices that we have in every Bunch crossing in this example in this in this slide I present an event with 78 reconstructed collision vertices and one bunch crossing In average our number of vertices in the collisions was around 20 2021 and from from it we had to select the the good vertex and the good uh collision the all the experiment experiments experiments so Detectors in the CMS and mainly the inner detector was designed To be able to reconstruct This amount of collisions and it it was of course a challenge for the trigger, but we uh, we managed to to do it for the first one of the LHC A picture a real picture of the CMS Were two two 1680 pieces are working Were uh, eight hundred and ninety one of them are students, PhD students mainly we are hundred and eighty two institutes from 42 countries The CMS high is 25 meters and the um And it is a 15 meters diameter Here are the slides of the CMS just to get familiar how we do the detection of the particles in the center of the the left part of this image We have The tracker where all the charged particles lives Their signal and then we can reconstruct The trace or the path where they went and then after that we have the electromagnetic calorimeter where all the electromagnetic Interacting particles are stopped and we collect their energy Then we have the hydronic calorimeter where all the proton neutrons are stopped and we collect their energy and um We have a immune system the particles that go Deep into the experiments are at means so we have all this immune system in the outer part of the Of the detector and the neutrino It's not that we can not detect neutrino, of course So we call the neutrino miscinergy. So every time what that I mentioned miscinergy it means It meant that is something that we could not detect and mostly Is uh due to the neutrino We have in CMS we have two magnetic fields one in the inner part to At four tesla and in the outer part where the muses are Uh, it is to tesla That's why you see the mule track the blue one is deflected into different directions The cms physics analysis are currently or in the in the first one the analysis that we that we did We're about a standard model physics, of course we had to get the results from the previous experiments and Uh The measurements are already existed. We have four were in a small x qcd We have heavy ions physics b physics Exotica top physics supersymmetry and beyond two generations physics. Of course our main Um subject during the first run was the hicks uh That has been searched for more than 40 years And it's what i'm going to present today mainly So this uh the production of the hicks in the in the cms can be given can be done by four Process one is a gluon fusion where in the mass of 125 gig electron volts is the the mass that we We found this uh the hicks The production uh due to the gluon fusion is 86 percent We have also production of vector bosque boson fusion It it's around seven percent of the production the associated production with a w or c Is it's about six percent and the associated production with top is one percent At a at eight terrelectrum volts that means that in the second part of the Of the run where we were colliding at eight terrelectrum volts. We have around 400 000 hicks boson produced in cms How do we distinguish between these hicks production because after that you will see that in all the papers we are dividing dividing the different Process So how do we distinguish between different processes in the gluon fusion? There are no jets and the final say there are no jets associated So when you have zero jets, it means that the hicks was produced We assume that the hicks was produced by the gluon fusion In case you have two forward boson two forward jets We assume that the production is done through vector boson fusion In the case of you have an associated production, of course, you will have the hicks plus a w or a zbk And in the case of associated production with the top we assume that we will find the die top and the hicks the decay after having the The hicks produced the decay can be Can be into direct coupling with the mass particles like w w zz top tau tau bb or through the loop Of tops giving us gamma gamma or gluon gluon In the case we are very lucky that the hicks Like to be in the 125 you can see from the plot That it's a very favorite Mass value because we have all different decays into a in the In this in this mass value if we have a hicks at 400 for example, we wouldn't have the gamma gamma decay available Or the tau tau decay So we are very lucky and in the case of having Produced 400,000 hicks At 125 If we have a branching ratio for the gamma gamma for example of 0.002 We may we have 800 hicks To be found via gamma gamma in the second part of the run at 80 electron volts It's what we we were searching And here is one example of the one of the decays One of the even displays of the Hicks candidate going to cz to two muons and two electrons So you can see from the picture that all the muons Tof tosh the The muon detectors the red ones and the electrons are have a A Signal in the tracker plus the position in the calorimeter the green part. So this is a candidate with a Mass of 244 Gig electrons of course is not associated with the hicks peak But it was one of the first events of this class In this case the the analysis done for the hicks Going to zz Gave us a signal and the strength of the signal that we call signal strength is The cross section that we observed over the Standard model cross section and we expect this value to be close to one and in this case for this channel is 0.92 As you expect from the name from the From what I mentioned the main signature here is when you find For leptons it can be for electrons for muons or two of each one as in the evidence play The advantage this is called the golden channel because it's the cleanest one The advantage is that you have more signal that background in the signal region You can see the from the plot in the left the peak The red bit corresponding to the signal It's In that region the background is very low compared to the signal It can be fully reconstructed. We don't have any misanology in the In the event You can do measurements of spin and parity And the bad things about this channel It's that we have a small signal and The it's a challenge to keep the the high lepton efficiency The the lepton efficiencies are above 98 Percent efficiency for both for electron and for muons being better for electrons And the bar the dominant background is the zz production and all the fake leptons that are coming from the jets For this channel by itself We have already a discovery using the whole the complete set of data at 70 electron volts and an 80 electron volts and We use We use apart from the mass we use a variable Distributed A value our discriminated variable that uses all the angular distribution of the particles of the final Particles to do this To do to calculate this Sigma or p value In the case of kicks gamma gamma What we search is of course two gamma gamma particles Where the gamma gamma particles is just at the position in the electromagnetic calorimeter without any trace associated And in this case we have two forward jets. So we know there is a vector boson fusion production in the event This is the event where the Where the signal was seen for the first time it was the one that had more Visibility at the beginning The advantage of this one is that you have two isolated isolated leptons and the spectrum of the pts very It's the efficiency is very high as The same as the Higgs to cz or the Higgs to four leptons. You have a fully reconstructed final state You can reconstruct reconstruct the mass The resolution for the mass is really really Efficient it's the one two percent of efficiency in the master construction and we have a large signal In comparison with the background The challenges are collision vertex Assignment since we don't have a trace associated with the gamma gamma The reconstruction of the vertex is very it's one of the main Challenges and since we model the background we do a fit to the background It's it had it was also a challenge to match with the data and all the data driven methods To reconstruct the the function that gave us the modeling of the background This one can be this analysis can be a split in many different categories depending on The kind of photon we have different categories for the photo reconstruction And it gave us when we split in different categories. It gave us a large Sensitivity for different for Different categories and that helps a lot in the In the calculation of the of the sigma of the discovery So in the plot what you are seeing is the Invariant mass reconstructed from the gamma gamma from the two gamma from two gamma gamma founts and all the different categories are some some in this In this plot in the In the lower part you see The see the data with the subtraction of the background this Discovery to the sigma value that we get just from this analysis is More than five Sigma so it means that we already we have a discovery By with this channel by itself Uh, we I remind you that at the beginning we had three sigma and it has been growing from that Um In the time As the data has been taken in this channel taken in this channel Another channel that we looked at was Higgs to the w w One each one of the w decay into lepton neutrino Here, uh, we have miscinerology coming from the two neutrinos in this seven display you have Uh, a Higgs going into W w and each one of the w is going to into electrons You see the the position in the electromagnetic calorimeter and also the trace associated to it and the mis the direction of the miscinerology that Is given by the compensation of the energy that you don't find in the transverse plane and in this analysis the The main challenge is the reconstruction of the miscinerology as I mentioned it's associated with the Neutrinos, but we don't know the direction of the neutrinos. We know the direction of the Total miscinerology, but not the specific. So what we do is to uh, we reconstruct the transverse mass instead of the uh, environments The advantage advantages of this channel is that we have Uh, an acceptable ratio between signal and the background around 0.2 The challenge Uh, besides the reconstruction of the miscinerology It's that the resolution for the miscinerology. It's 20 percent Um, compare that to the to the resolution that we had For gamma gamma for example, that was one percent. So here the resolution is much much, uh Much more wider when you do the the analysis. So that is, uh That's why it's, uh It's less, um This channel is less competitive We can say with the gamma gamma or the four leptons. The main values for this channel In the previous analysis, we had just The in the case of four leptons, we had just the production of the two z's in the case of gamma gamma We had the the profile of the Regular gamma gamma production in this case we had Um, uh, we have five backgrounds And each one of them require, um, different considerations For the modeling, um, we use We use Monte Carlo for some of them and that's driven for Some uh, for some other and all this require requires more validation and more work than for the other channels In the case of the ww, we see an A significant of four point three four point three, uh Instead of five point eight from the spectate, of course because the As I mentioned the difficulties or the challenges that we have in the in the analysis And it's not yet a discovery by itself, but going into the same direction in the same mass value for the Um, the same mass value for the other channels in the combination it gives It pushes the significance the combined significance up In the case of the autodes was uh, one of the important channels after the discovery because We wanted to know if there was a direct decays on decay on leptons on fermions and We know that if we were seeing the hicks to gamma gamma In uh, the hicks to gamma gamma it was through a loop of tops nevertheless We needed to see the direct decay And this one of uh, this analysis was one of the most important analysis after the discovery and after seeing the the other decays In this evan display, I show you the a hicks going into tau tau one of the tau's decays Hadronically and the other tau decays decays electronically. That means Um, in this case it decays into a million and into a neutrino that gives us the the mis-synergy in this case And we have in the evan display we have two jets Uh, I remind you that when you have two jets it's a vector boson fusion production For this analysis the main shot about we have a Big challenges for this for this one Because the ratio between the signal and the background is very very small and we have large uncertainties for this one It's starting from the reconstruction of the mass since we have mis-synergy We cannot reconstruct completely the mass So that is one of the The problems then the The reconstruction of the mass of a z the main byron is a z to tau tau But it has the same challenges to to get this profile It has the same challenges as the reconstruct as a simple reconstruction of tau that has low efficiency So to do that we did A procedure using the z to mu mu signal and embed Mixing this information from the data with the decay in the with the Monte Carlo of the tau Together to get a sample of the of the background That can modulate as we see the data as good as we we can the data So the uncertainties of doing that was really really large In comparison with the other analysis where the background the main background is coming directly from the Monte Carlo Or that had driven but this one was a mix. So the uncertainties multiply And that's why it was it was really a challenge to do this reconstruction The main background as I mentioned was z to tau tau and the QCD In this channel, we have a A signal strength of the region between the what we see the production that we see and the production Predicted by the standard model is 0.78 in comparison with the standard model and The uncertainty is 0.27 For this channel, we have an observed significance of 3.2. It's already an evidence That pushes up the the combination of the significance for all And since we saw the The decay on this on this channel was very very important to see it was presented in Morion in 2013 And it was the key one of the key things to confirm that we were talking about the The Higgs particle and not another another person Another important analysis that that that is also difficult is the Higgs to BB And this evidence play I have a Higgs The came into two bees and you have two jets Corresponding to this to the vector boson fusion a production Their construction of the bees is also something difficult because it's The final stage is seen as two jets With a little a small displacement in the in the main vertex Here the advantages are the The the that the branching ratio is very very lush and the challenge is that the Ratio between signal and background is very very poor And the distinct and the And to distinguish between the background signal is is is hard also the reconstruction The efficiency of reconstructive navi Is is very low compared to to a leptom for example the mass resolution for this channel is around 10 percent And The key one of the key points of course is a bit tiny to recognize to recognize that the jets coming from a bee and not from other Other jet production the backgrounds. It's uh, it's also a combination of backgrounds. We have top diversion and QZD Together with the vector boson production associated with jets For this channel, we have an observed significance of 2.1 And this is not this This significance is not even An evidence nevertheless it gave give us a push into the combination and also it's important It's an important channel for what I was mentioning before the same as it doubt out In total the signals trend for all the channels that these are the combination the legacy combination that cms has done Uh has been uh, it's already submitted for publication And it was presented in in morion last A few days ago We have uh, the different analysis the ones that I presented Higgs to gamma gamma Higgs to cz Higgs to ww Higgs to total Higgs to bb with the different, uh, category of the production Untuck means the the glum glum the glum glum uh fusion and Vector boson fusion you have associated production and top uh associated production In the case of gamma gamma we have a strength of 1.12 cz, uh, it's more Is closer to one and in general all of them are are close to the to the line to the Green line And vertical line Sorry that it's called the corresponding what will what what we expect from standard model And the combination of all these values is is one. I Mentioned that the last value that we have Was 0.9 And now with all the new analysis and the new um And all putting together all the data and all the channels we are getting very close to the standard model and it's one plus, um the different values for the uncertainties giving us a 0.14 in total uncertainty The signal strength was also tested in the different Uh for the different production nodes for the vector boson fusion and also for the associated in the in the left part of the in the vertical Acts of the axis of the plot and in the horizontal you have the glum glum and the top a production And the contours are course course 1 to 68 percent confidence level Regions so what we what we expect from standard model is Yellow point surrounded by the red and all the All the other values that we see from the from data are very close to it We can see that all of them are consistent with what we expect from the standard model At least at 68 percent confidence level This is also coming from the from the latest um Latest combination the legacy combination We also tested the spin and the party of this particle the measurements were done where we have enough signal to distinguish between them and The measurements were done with the hicks to four leptons hicks to w w hicks to gamma gamma You can see in the in the plots that in the left one the two hypotheses of having um A spin one and a spin zero in both with positive party Those are Monte Carlo Monte Carlo time Monte Carlo experiments or self the experiments And the the arrow the red arrow correspond to what we observe on date So we can see that for the Between the spin one and the spin zero the data prefers to stay in the In the zero spin region And if we compare the zero With the spin with part a positive party and negative party in the left plot in the left and the right plot The data also likes to stay in the zero plus so the spin zero and Positive party is a string a strongly favored in this In the the data is a strong strongly favored this this value for the spin and and party the uh in this legacy paper also the precise determination of the muscle was uh studied We did that with the hicks to zz channel and the hicks to gamma gamma And the value that we got is 125.02 with Different systematics and as you can see from the different values in the tables in the right In the case of cz we had 125.6 Gig electrons and in the case of gamma gamma the mass that we were getting was 125 So it's very consistent with the value the combination is 125.3 consistent with what we were Seen in the different in the different channels by by themselves It gives us a precision of 0.3 percent with of the measurement of the mass for the hicks We also test the couplings. This is the latest uh combination that we get the That we get for the test couplings in the vertical Axis we have the couplings to the fermions Here we define the coupling test as the ratio of the coupling that we see into the in the experiment And uh over the ratio that is predicted for the standard models for we expect that this ratio is one Is close to one is what we expect And in the case the same for the coupling to the vector to To the to the vectors and in the horizontal axis You can see the different channels Distinguished by the colors. Of course, we have values for For positive and negative region the only one that makes sense is the positive And you have the different decay channels hicks to bb hicks to tau tau gamma gamma w w and z see With the different colors in the contours The combination is given by the gray area and it's uh the error contour Includes the value expected by the standard model Giving us this as uh Are consistent consistent resolved with the standard model for the test of the standard model couplings for the couplings for the fermions and vector in the in It is predicted by some Some beyond standard model models Is predicted that we can see uh Deviation in the loop Production for the hicks to gamma gamma and gluon gluon fusion We can see this testing the coupling to the gluon to the gluon and to the gamma And here with percent results that we see Testing this this coupling or looking at this relationship We expect from standard models As I mentioned to to be this coupling one The observed is around 1.2 1.2 in the in the coupling for the gamma and 0.9 for the coupling of the gluon The contour at 68 confidence level includes the the contour Includes the value of the standard model. So it's consistent The result is consistent with standard model. We don't see deviation in the induced look for the diagrams The test for the Continuing with the test for the standard standard model couplings it is predicted also for models beyond standard model that We can see a symmetries between the up and down type and lepton quark couplings. So we tested this This couplings and we got that The coupling for the up and down Lies between 74 and 1.95 With 95 confidence level and the couplings for quark lepton the ratio between these two couplings Lies between 0.57 and 2.05 at 95 confidence level while we expect the value to be at 1 From the what we see from standard model what we expect from the standard model and We can conclude that It looks they look consistent within this This range of of the values The summary of the coupling test that we that we did that is presented in the legacy paper It's in the left You see all the couplings or the ratio of the couplings The first value is the ratio of the coupling of the w and z 0.92 The coupling for the vectors is one Coupling for the fermions 0.87 the ratio between the couplings of the Up and down is 0.99 And the coupling for the gluons 0.89 and the coupling for the gamma is 1.40 14 What we see from the beyond standard model ratio is far away from the Of course far away from the standard model and we see something less than 0.14 From the data. So everything is consistent with the standard model for the test couplings in the we did the same for the couplings are in Relationship with the mass of the particles in the right plot And from it you can see that at 95 confidence level everything fits Into the line that is suspected from the standard model some models predict that in case of In case of the Higgs being Not the only one or existing another Higgs instead of having one line. You may have three lines of this kind It is We are consistent with the standard model, but there is a space there to have Something else coming from from another model In total the summary for the Higgs analysis in the first run That we're done with five inverse point of arm of data at 70 electron volts and five inverse and 20 20 inverse point of arm of data at 80er electrons have been presented to publish already Except for the legacy paper that is coming all of them are consistent with the standard model and portmas around 125 Gig electrons This is what corresponds to the Higgs results the later results The later results for the Higgs And but CMS is It's doing more analysis than that as I mentioned before we we are doing Standard model of course to confirm what we have seen already and also to search for any deviation From it to see if there is there is a place for New physics. We are doing super symmetric supersymmetry. We are doing exotica. We are doing top physics in total Um We are this is the results the summary of the results that we have for the standard model At the end we are already including the measurements that do to we for the Higgs So we do measurement precision measurements for w's z w w w z production Uh top production and everything so far has been consistent with the standard model We do also measurements on uh, exotica everything all the models that uh predict something beyond standard model and it's not supersymmetry including dark matter Heavy gauge bussines Extra mentioned compositeness Lonely particles all this in these plots We uh in these histograms Each one of the predicted particle Is um excluded up to the mass that is in the that is mentioned in the Vertical lines for example if we pick up the w prime and In the in the in the area of the heavy Gauge bosons We have uh an exclusion for this one. There is no w prime. We haven't seen any w prime Up to 3.2 giga etter electron volts at 95 confidence level So we are doing in parallel to the Higgs physics. We have um a bunch of Analysis for for exotica and plenty of results that you can find in the public results for the cms In case of supersymmetry, we have a separated Set of A group of people doing well many groups of people doing many different things and you can also find the results in the in the public page of the page for the public results of the cms Well to finish the analysis that is what corresponds to what I want to mention to the analysis We start with the lhc schedule to what to end more or less how it How it looks The lhc calendar is expected to work To be all the way to 2035 is what we expect to have Now we are in 2015 in the first half in the second half. We are expecting all the green is physics The red are the long shutdowns that we expect during this period And as you see the run the second run that we are expecting and starting In these days is going to finish in 2018 And after that we are improving energy and luminosity for all the other program In the specific case of this year We are starting the during march It is the calendar is seen by by weeks And in the in the monday Pro you can see the day So for example today we are on the 20 in the last column of the Of the first Set of of days 23 march 23 And we were expecting Beam this this week already a beam surrounding the lhc And but we got a little delay. So this week we will not we will not have we will not have the beam unfortunately But it's uh, it's foreseen very soon for for next week during this period in below this this um This table I mentioned that cms has been working With all the detectors and everything synchronized running cosmic run at zero terms less and Cosmic run at four teslas We are already prepared to get to get the beam cms is Is is ready to get the beam the first beam as I mentioned is expected next week and we will start The beam Up to May 11 Then we will have a special runs through physics and we will increase we will um start Changing the changing the separation in the In the branches to change from 15 nanoseconds to 25 nanoseconds in the middle of June more or less This is the second part of the of the schedule So you have in the around sorry around july 6 We will start trying to get 25 nanoseconds operation for the lhc The lhc goals for 2015 of course is to get the energy at 6.5 The electron volts you can see that all the way to march we were able to get Uh, the energy around three there electron volts per beam This has been Going this test and this increasingly energy has been going for six months. As you know, we were changing all the connections in the lhc And uh, we are now, uh It was reported morion that we are now ready To go all the way to 6.5 depending on this um This energy test that that are done that will be finished Of course, we will know for sure next week And the other goal of lhc is changing the bunch spacing to From 50 nanoseconds that we have now to 25 nanoseconds So we decrease the pilot the amount of pilot that we are expecting since we are increasing luminosity We are expecting at 50 nanoseconds to have much more pilot Than we have for the first one and there is a challenge for all our detectors So for this one, um Decreasing the separation of the Of the bunches to decrease the amount of protein in each one of the bunches. So the pilot is decreased and you get More safe, uh, it's the trigger and their construction gets Easier than going into the 50 nanoseconds where you have more pilot to finalize The prospects of run two of course is, uh Continue with the precision measurements of the hicks the gloomfusion cross section increases by 2.3 from 8 remotes of 13 In the case of production with the hicks to top the cross section increases by four The the background increases, but uh We have more or less already all the all the analysis set We are expecting up to 100 percent to burn for the whole second run At the end of the 2018 we will we expect more or less hundred inverse femtobar I remind you that we got results with 10 20 inverse femtobar and the most important is that all the new physics that is coming um It's going to be seen at the very beginning because we are increasing a lot the cross section of many of the exotic particles The susie also will be if uh, hopefully we can see susie at the beginning and It's uh more or less what I wanted to tell you on the on the lhc prospects for this second run And for me is it's it's all so thank you so well for such a nice presentation um, we will now pass to Different participants because there are several There are questions now, so as let me remember Don't don't forget that you can also ask questions to Isabel using the q&a system in the webinar page And you can also use twitter just in case you can also use this hashtag So Let's see Who's going with that? We have a question from a few questions from valencia So it means let me let me pass it to you Okay, I have one question A question is What do you mean with this for this cms physics analysis? What does it mean that the young two generations? in the sense that The third generation is like extra or is apart or If you can comment about that um Beyond I'm not That familiar with the analysis with the Beyond two generations it's um Analysis that goes it's inspired by exotica but the idea of exotica And it comes from For new physics, but I'm not I'm sorry I'm not Familiar with that now with that section of the analysis I know that it's inspired by exotica And it got divided, but I don't I don't remember. I'm sorry So we had more more questions from the From valencia Okay. Yes, we have more. I mean the one that People wrote the name they are gonna ask now Yeah, I could be telling one thing. So you have to send it somebody says Uh Yes, of course, uh As you may know, uh, when you see Something below three sigma is not It's not yet, um, an evidence Nevertheless is and tau is um The the tau reconstruction is something very hard because also you have the miscellaneous energy involved And It's what we are seeing right? I cannot say that the measurements about the standard model that we are doing Are wrong. It's just that we see that we see that Uh In the Higgs we respect everything that is close to the In the standard model and in the town new channel. We are seeing this deviation that we cannot yet Say that it's an evidence or or something else Okay, we have uh now a question from uh from through. I will pass it to you right now You can go ahead guys Sorry, we had issues with the microphone again. Um, I was wondering if you could give details about Uh, the low level triggers for the next run since we're going to have a larger pilot now. Um, how is CMS going to adjust to that? Well, um, of course it has to We implemented a new technology for the trigger and new new algorithms And I don't have the menu for the lower trigger right now. It's not probably yet But of course we we are increasing the we're increasing the energy in Many of the the first level the l1 trigger for many of the Objects it's uh going to get the prey many of them are going to get press scale and some others in we are expecting them a high Level I are seen uh simply just cutting up Instead of having An electron 25 we will have electron 30 respecting of course The safe analysis to have the peak of the w the peak of the z that are the ones that we can confirm right now Everything there is a standard model of course Thank you So we also have uh, we've got a question from Jose Surita He said The tth central values are rather large But also with large uncertainties. Is this limited by systematic or statistics? it's uh Systematics mainly It's also I mean the um If we don't have a lot of statistics, we also have uh large Systematics, so it's uh, we're going in both directions. We don't we don't have a A precise measurement because we cannot reduce systematics and that is due to statistics Okay, we have up here another question By Federico He has will the present delayed affect the start of the physics one Oh No, no, I mean it's just one week and Very small That the big delay so far Okay, and we also have a question sent by Nicholas from From valencia He said can you can you go back and explain with more or less details The short showing the results from supersymmetry For mostly our party violation Okay, now you can see the The slide you meant this slide with the supersymmetry results You have to share the the slides I try to I I cannot share the screen No, okay So in in this chart, I don't present the Um The well, it's not the the details of the analysis are not presented But you can find it in all the paper related to each one of them You can see the each analysis associated with one of the paper in the rpb By the rp violation you have the different Different values of exclusion for the different Super symmetric particles, but each one of the analysis have their own Details for them, I cannot give you I cannot give you a detailed information of each one of the analysis right now The section of the rp is in the lower part Okay, we have also a question sent by Felix also from valencia Um, he said what do you mean with the pseudo experiment? Uh, yeah pseudo experiment is you have something that you have the Monte Carlo Uh And you have a shape of your of your histogram for example You modulate this shape with a fit Then you throw a random uh with this function that you build You throw in the program With different random numbers you throw You ask the program to produce this This function from the fit So with random numbers it will give you a small deviation of what you expect This random numbers can vary eight depending on for example your energy resolution Your uh myon or electron efficiency So you give these random numbers of the parameters of the function You give them some kind of freedom That correspond to something that you see in the experiment This you do it many times close a million of times and you call this So the experiments so this one each one of these So the experiment that you throw will give you a point into the distribution that I show for the spin and priority And then you get this Like you get the distributions and the same you do it for the signal Or for the the model that you want to compare you do for the both Okay Okay, so I think we have no more no more questions. That was a nice presentation and discussion Thanks Isabella again for for your presentation We also thank the the participants and they hang out and also all the viewers We hope to see you in a few weeks for another Legend American webinar on physics Okay, thank you very much