1 00:00:01,979 --> 00:00:06,839 It's nice, thank you. Okay, thank you. So with afternoon I am going to present the 2 00:00:06,839 --> 00:00:10,889 latest results on the measurement of tiki bar and the bar plus b flavor cross 3 00:00:10,889 --> 00:00:16,709 sections performed by the CMS collaboration. These measurements cover a 4 00:00:16,709 --> 00:00:21,809 wide range of different production related topics, measuring inclusive and 5 00:00:21,869 --> 00:00:26,129 differential corrections in different financial states, okay, medical regimes up 6 00:00:26,129 --> 00:00:30,719 to now or the results that are applying the below it with deposition. So the 7 00:00:30,719 --> 00:00:40,979 standard and are based on ethnicity of 55.9% or 30 db. So I start with the most 8 00:00:41,009 --> 00:00:48,389 recent measurement that 13 TV covering the electron neon tower and finally state that 9 00:00:48,389 --> 00:00:53,099 this final state has the property that in one side that the Quark decays exclusively 10 00:00:53,129 --> 00:00:58,019 to generation particles, and so it might be particularly sensitive to be 11 00:00:58,019 --> 00:01:04,829 understandable. In this channel, the signal includes only tau litems that decay 12 00:01:04,829 --> 00:01:09,389 ironically, and events are selected by requiring one isolated election or at 13 00:01:09,389 --> 00:01:14,729 least two gates on exactly one other candidate. At least one of the Gates has 14 00:01:14,819 --> 00:01:19,259 to be there, let me unpack it and contribution comes from events where they 15 00:01:19,259 --> 00:01:25,919 get this misidentified person. Another another Nika tau m comes mostly from the 16 00:01:26,489 --> 00:01:27,749 electoral process events, 17 00:01:28,769 --> 00:01:29,879 dissing our background 18 00:01:31,019 --> 00:01:36,779 are defined as a as a function of the distance variable defined here. That is 19 00:01:36,809 --> 00:01:41,939 obtained from the triplets II and is constructed for each combination of one 20 00:01:42,059 --> 00:01:47,849 target and one target including the other candidate. And he's calculated to check 21 00:01:47,849 --> 00:01:51,719 the compatibility of the different combination of hits to come from the top 22 00:01:51,719 --> 00:01:59,339 decay chain, including the W then the rent is assigned to be signal like if there is 23 00:01:59,369 --> 00:02:04,769 only one And packet or if the minimum value of the distance is larger than 60 gV 24 00:02:05,189 --> 00:02:11,699 as shown in the figures, then the mass is used as it provides separation between 25 00:02:11,699 --> 00:02:15,959 seeing other background and does not significantly depend on the transfer of 26 00:02:15,959 --> 00:02:22,739 momentum and entropy of the of the Atlantic. The two figures a show a 27 00:02:22,739 --> 00:02:27,059 transverse Masisi beaten into me on other Nikita final estate for the signal and the 28 00:02:27,059 --> 00:02:31,859 background like even categories appear to the fitting it then the cross section is 29 00:02:31,859 --> 00:02:36,029 measured by performing a profiler, you convert your feet to the transverse mass 30 00:02:36,029 --> 00:02:41,669 in the kinematic activities define the previously 40 events in the electron and 31 00:02:41,669 --> 00:02:46,979 the final states because section is derived from the signal strength and 32 00:02:46,979 --> 00:02:53,339 measured in the feet and the event is the background process misidentify tau are 33 00:02:53,339 --> 00:02:59,459 also that determine the the largest experimental uncertainties comes from the 34 00:02:59,459 --> 00:03:04,889 identification On misidentification of the Atlantic town from bilac estimation, why 35 00:03:04,889 --> 00:03:09,509 is the largest theoretical uncertainties due to the modeling of the quality in the 36 00:03:09,509 --> 00:03:15,959 DT versus the required fragmentation and the pattern then the construction is 37 00:03:15,959 --> 00:03:19,709 measured in the future spatial data and then extrapolated to the to the full 38 00:03:19,709 --> 00:03:26,279 Fisher space using the acceptance estimated from simulation demands to be 39 00:03:26,279 --> 00:03:30,989 781 be combined consistent with a version of the standard multi tiered approach and 40 00:03:32,009 --> 00:03:36,269 then the ratio of the corrections in the electronic towel to the light delicto 41 00:03:36,269 --> 00:03:42,869 Finally, states history social measure to be born in 1973 with a systematic 42 00:03:42,869 --> 00:03:49,139 uncertainty of 7% and it's found to be consistent with one spective from a list 43 00:03:49,139 --> 00:03:55,499 of universal the measurement also provides a an estimate of the ratio of the partial 44 00:03:55,499 --> 00:04:01,859 to the total width of the of the top part decay to be a point one Five, dominated by 45 00:04:01,859 --> 00:04:05,699 the systematic consistency this measurement in any case improves the 46 00:04:05,699 --> 00:04:11,489 previous measurement and is consistent with the standard. When this measurement 47 00:04:11,489 --> 00:04:16,439 there represents the first of the TDR correction correction at 50 db, without 48 00:04:16,439 --> 00:04:21,119 any color decay into leptons and a improves the relative position with 49 00:04:21,119 --> 00:04:23,489 respect to the period results at the lower end. 50 00:04:25,740 --> 00:04:26,820 Here a 51 00:04:26,880 --> 00:04:31,800 the left figure shows a summary of the inclusive corrections measured by CMS at 52 00:04:31,800 --> 00:04:36,900 30 Db using a fraction of the luminosity collected at this entity, where it can be 53 00:04:36,900 --> 00:04:41,130 seen clearly that the Chinese have been already conceded, while the electro neom 54 00:04:41,130 --> 00:04:46,530 channel provides the best sensitivity with the main systematic uncertainties coming 55 00:04:46,530 --> 00:04:50,700 from the modeling of the developers process at electron Attica efficiencies. 56 00:04:51,510 --> 00:04:56,430 And the red plot shows the TT bar inclusive cross section measured by CMS at 57 00:04:56,430 --> 00:05:01,500 the different center of mass energies that we that he operated Including the tomato 58 00:05:01,500 --> 00:05:05,940 measurement and also the measurements in the electron and electron projects 59 00:05:05,970 --> 00:05:12,060 Finally, states performing fit can be seen all results are consistent with the most 60 00:05:12,090 --> 00:05:20,130 precise with the most besides in in a low blessing in a theoretical calculations on 61 00:05:20,700 --> 00:05:25,860 with unexplained experimental sensitivity, that which is valued in the range of three 62 00:05:25,860 --> 00:05:34,770 to 3.5%. CMS has a strong problem of measurements of divide and additional 63 00:05:35,640 --> 00:05:36,750 kidney flavor. It's 64 00:05:37,260 --> 00:05:41,370 the measurement of these processes has the challenge of having lots of uncertainties 65 00:05:41,820 --> 00:05:45,750 in the analog calculations into the scale variations and also because the divine 66 00:05:46,050 --> 00:05:51,390 processes have very famous case the measurement of course, is essential for 67 00:05:51,390 --> 00:05:56,940 the study of the dth production of the Higgs and also for the termination of the 68 00:05:56,940 --> 00:06:02,700 Four Tops and the de vida de vida. Manuka she went back home for the dth when the 69 00:06:02,700 --> 00:06:07,950 hits the case of Ebola and the DPT autism introducing or background going that are a 70 00:06:07,950 --> 00:06:14,010 misidentified cross section is measured in the electronic final estate. For two 71 00:06:14,010 --> 00:06:18,630 definitions of the Tiki Bar cross section in the initial phase of space Park and 72 00:06:18,630 --> 00:06:22,260 based on pattern independent dining the total feature space, they are showing the 73 00:06:22,260 --> 00:06:28,800 figures compared with a location from a as can be seen the predictions on that 74 00:06:28,800 --> 00:06:34,860 estimate, they measure procession by a factor by factors of between 1.4 1.5 and 75 00:06:34,860 --> 00:06:39,900 2.4. That corresponds to a one to one standard deviation. But the results are 76 00:06:39,900 --> 00:06:47,070 consistent with previous measurements. And CMS had 13 and also at the end, the right 77 00:06:47,160 --> 00:06:48,750 here shows a summary plot of the 78 00:06:49,740 --> 00:06:50,760 new vertical section 79 00:06:51,390 --> 00:06:55,530 with respect to the standard deviation in the free Fisher space. As can be seen the 80 00:06:55,530 --> 00:06:59,130 measurement the electron and the composites that I described Next are the 81 00:06:59,130 --> 00:07:03,750 most precise with it. propeller different certainties, if they have the order of 80% 82 00:07:03,750 --> 00:07:10,830 for the electron channel or 14% for the lip. Here a pretend the measurement of the 83 00:07:10,830 --> 00:07:15,210 perfection for the production of the of the Quark in association with a better pH 84 00:07:15,720 --> 00:07:20,490 or in association with a bit of different products of any flavor or we want the 85 00:07:20,490 --> 00:07:26,280 ratio in there one in the finite states with one or two that are performing 86 00:07:26,280 --> 00:07:32,490 depending upon channel events are selected that with two oppositely charged leptons 87 00:07:32,550 --> 00:07:37,590 for our module, a of which are these two have to be wiling the electoral process 88 00:07:37,590 --> 00:07:43,860 channel events have a need to have exactly one isolated electron or Mian because in 89 00:07:43,860 --> 00:07:51,180 this in this case, they said they they went off selected a in an orthogonal way 90 00:07:51,180 --> 00:07:57,960 to the final estate, at least six sets are required, of which at least the two have 91 00:07:57,960 --> 00:08:03,870 to be identified as beacons. In the baritone channel i based on MonteCarlo 92 00:08:03,870 --> 00:08:09,390 studies the kids with the third and the fourth largest stubby scheming and values 93 00:08:09,390 --> 00:08:12,960 are considered a position audience why for the composite channel 94 00:08:13,410 --> 00:08:16,140 sorry for the composite channel 95 00:08:16,650 --> 00:08:20,460 a given it's a larger number of the assignment based on the kinematic 96 00:08:20,580 --> 00:08:26,160 kinematic fee supplied after which the addition objects are arranging additional 97 00:08:26,160 --> 00:08:31,380 that of the of the tagging other are considered essential. If you go to a here 98 00:08:31,380 --> 00:08:38,430 shows shows the discriminant from data from the predictions and as can be seen, 99 00:08:39,480 --> 00:08:45,390 they are to distinguish between the different the DTG categories, then the 100 00:08:45,390 --> 00:08:52,290 cross section, the ratio and the actual tttt cross section as soon as they started 101 00:08:52,290 --> 00:08:57,210 using that being maximum likelihood fit to the two dimensional add to the two 102 00:08:57,210 --> 00:09:03,300 dimensional distribution of the diagonals came out of the two additional years and 103 00:09:03,300 --> 00:09:09,720 they both the channels are fitted independently because of the different 104 00:09:09,810 --> 00:09:17,790 facial space that they cover and within them the defendant finally states at the 105 00:09:17,790 --> 00:09:27,450 same time your feet can be can be seen here along with 68 or 95% of users and the 106 00:09:27,450 --> 00:09:32,670 measurement is in the full feature space as shown here for the purposes finally 107 00:09:32,670 --> 00:09:36,690 states that to measurement in the free feature space I need a wallet with the 108 00:09:36,690 --> 00:09:42,120 MonteCarlo patients for poker okay I must have interfaced with became white patients 109 00:09:42,120 --> 00:09:47,070 for from a pocket plus a head which a black black plus plus for the ratio and in 110 00:09:47,070 --> 00:09:52,590 consequence for the divider DB but processions are is likely a slightly lower 111 00:09:52,590 --> 00:09:58,560 pay than the initial measurement in this in these final states. In this lip plus 112 00:09:58,560 --> 00:10:03,090 its final state represented The most precise measurement of the inclusivity 113 00:10:03,090 --> 00:10:09,630 divided up by entity by the age of projection and also a PE of the ratio. So, 114 00:10:09,630 --> 00:10:15,870 moving on to differential protections and double differential length delivered on 115 00:10:15,870 --> 00:10:19,920 Channel are presented here together with the structure of the stone copying 116 00:10:19,920 --> 00:10:25,710 constant and some PDF information and then normalize the differential procession of 117 00:10:25,710 --> 00:10:29,700 the production or measuring the full thesis based upon the level for several 118 00:10:29,700 --> 00:10:35,070 variables that are sensitive to different aspects of the DD vital a production 119 00:10:35,070 --> 00:10:37,980 dynamics and the typical differential is also measured as a function of the 120 00:10:38,310 --> 00:10:44,700 extracted the multiplicity and compared with differently chosen from different it 121 00:10:44,730 --> 00:10:48,900 representative distributions are shown here. I in the left that the transverse 122 00:10:48,900 --> 00:10:52,920 momentum of the work is compared to the different grains during the sort of 123 00:10:53,160 --> 00:10:59,370 ability to produce predictions from from them. As can be seen that our basic 124 00:10:59,370 --> 00:11:04,830 mission is software About the predictions in the entire era PT range and only pocket 125 00:11:04,830 --> 00:11:08,850 plus head week describes the data worldwide the other two simulations 126 00:11:08,850 --> 00:11:10,320 predict how to expect 127 00:11:10,860 --> 00:11:12,180 in the right figure 128 00:11:12,840 --> 00:11:17,040 that is the typical differential projection as a function of that ability 129 00:11:17,040 --> 00:11:21,060 of the device system in the for in the empty divided and get the range 130 00:11:21,719 --> 00:11:22,439 are shown 131 00:11:23,160 --> 00:11:28,800 as a function of two or three a, if I were to get one measurement or not, or 132 00:11:28,800 --> 00:11:33,690 MonteCarlo described it that well, while for the three that we in the poker plus PC 133 00:11:34,020 --> 00:11:36,630 is in satisfactory agreement with 134 00:11:38,970 --> 00:11:39,570 here 135 00:11:40,350 --> 00:11:44,100 that some coupling constants have been extracted from the measure typical 136 00:11:44,130 --> 00:11:48,420 differential perception when compared to fixed sort of initial prediction. The 137 00:11:48,420 --> 00:11:53,670 value is extracted at the low and compared with the world average in the figure, 138 00:11:54,330 --> 00:11:59,400 where a one can see that the uncertainties from the data from PDF from a scale from 139 00:11:59,400 --> 00:12:05,910 when people are comparable magnitude stating that the precise and reliable 140 00:12:05,910 --> 00:12:13,140 instruction of advice can be obtained only a when synchronously fitted together with 141 00:12:13,140 --> 00:12:20,100 the PDFs. Here the the initial cross section have been included in the fee 142 00:12:20,100 --> 00:12:26,910 together with a hida deeping SDK scuttling data to constrain alpha is a MP poll and 143 00:12:27,240 --> 00:12:32,010 PDF distributions, especially of high value effects. And as can be seen, the use 144 00:12:32,010 --> 00:12:33,930 of TP var measurements 145 00:12:35,580 --> 00:12:36,990 has a significant impact 146 00:12:37,260 --> 00:12:40,410 on the global distribution, especially in the range between point one 147 00:12:42,600 --> 00:12:45,810 and a finally a new three. 148 00:12:46,200 --> 00:12:47,640 You have three minutes left, 149 00:12:47,670 --> 00:12:53,220 okay. Yeah. Okay. Thank you. So this is the my final, my final topic. It's a new 150 00:12:53,220 --> 00:12:57,240 measurement of the production and production for a hike a transversal 151 00:12:57,270 --> 00:13:03,630 momentum works in the other any kind of complexity. a finite estates, a it, this 152 00:13:03,630 --> 00:13:07,890 measurement allows us to start to access the happy medium, with some precision 153 00:13:07,890 --> 00:13:11,520 beyond Of course, that each of the ratio of analysis of the value of the beauty of 154 00:13:11,520 --> 00:13:19,110 the quality of the order of four above 400 it could be sensitive to new physics. And 155 00:13:19,110 --> 00:13:22,350 it's very important they say very important this for a particular 156 00:13:22,350 --> 00:13:29,970 application in the only channel a too large set reduce it, so we do have the 400 157 00:13:29,970 --> 00:13:34,590 DVR required. And then events are classifying using the TTB event tagging 158 00:13:34,590 --> 00:13:39,660 based on neural network that uses yet sub sector variables for which two categories 159 00:13:41,160 --> 00:13:44,790 are based on the subject to be tagging the syllable control region on the Twitter 160 00:13:45,000 --> 00:13:49,020 signal. Their background is completely dominated by GCD and uses the metaphor 161 00:13:49,860 --> 00:13:54,030 then a maximum likelihood fit is performed to the mass of the of the Living Dead as 162 00:13:54,030 --> 00:13:58,080 shown in the figure. And differential perception test actually does function of 163 00:13:58,080 --> 00:14:03,300 the leading edge team topics That ability and also oh by the delivery system like 164 00:14:03,330 --> 00:14:09,840 like the mouse. So, here are the live templates your final state is presented 165 00:14:09,840 --> 00:14:14,070 and is defined by having one boosted automatically you can gain top and 166 00:14:14,070 --> 00:14:19,920 wonderful for electronically decaying work and events are categorized in terms of the 167 00:14:19,920 --> 00:14:25,500 PMP candidate passing the tagging requirements as described the backgrounds 168 00:14:25,500 --> 00:14:29,070 are estimated from the catalog set that gives you the that the system may differ 169 00:14:29,070 --> 00:14:34,470 from each other and then anytime you say being the maximum is 10 is maximum right 170 00:14:34,470 --> 00:14:39,150 to make the maximum likelihood feed to ethical research shown in the figure 171 00:14:39,540 --> 00:14:41,130 is performed and then 172 00:14:42,180 --> 00:14:45,810 the device illustrates the top tagging efficiency skill factor and the 173 00:14:46,050 --> 00:14:51,960 normalization of the device a signal strength is obtained from to the point at 174 00:14:51,960 --> 00:14:53,970 one plus minus a point. 175 00:14:55,980 --> 00:15:01,470 Here a results are apathetic, only normalized differential intersections 176 00:15:01,800 --> 00:15:07,200 as well as the uncertainties that are shown here. It can be seen that the 177 00:15:07,200 --> 00:15:12,510 measurement is still clearly statistically a limit and when compared with Fenella 178 00:15:12,510 --> 00:15:17,640 MonteCarlo why is that for another challenge the shapes are in general in 179 00:15:17,640 --> 00:15:25,440 general compatible a with the predictions I'm not no pts Lopa PS are for the lipo 180 00:15:25,440 --> 00:15:30,240 plus channel. The normalized differential distributions are generic when described 181 00:15:30,600 --> 00:15:31,320 by the three 182 00:15:32,640 --> 00:15:36,150 showing somebody a the first measurement 183 00:15:37,980 --> 00:15:43,350 a on the electron me on a toddler and finally state but format 13 TVs presented. 184 00:15:43,740 --> 00:15:48,600 The measure cross section is fine to be in agreement with the standard model and a 185 00:15:48,600 --> 00:15:55,080 the ratio of the electromagnetic tower with a light leptons is consistent with a 186 00:15:55,110 --> 00:16:00,480 comfortable universe and the measurements from the device of The dividing 187 00:16:00,480 --> 00:16:06,180 association with heavy flavors has also been presented with results from from 188 00:16:06,240 --> 00:16:11,370 Lipton Plus, it's been the most precise, and with measured values that that is like 189 00:16:11,370 --> 00:16:16,410 the largest and then finally, differential procession measurements were also 190 00:16:16,410 --> 00:16:21,930 presented. And any measurement that MTV or boosted the aquatic center a otherone 191 00:16:21,930 --> 00:16:28,110 conducted plus its final state washroom, in which they predictions a slightly 192 00:16:28,110 --> 00:16:32,490 overestimating Griffin cross section. And the normalized differential cross section 193 00:16:32,520 --> 00:16:34,590 showing the annual variable argument we say. 194 00:16:36,210 --> 00:16:38,070 And that's it. Thank you very much. 195 00:16:39,480 --> 00:16:44,220 Yeah, thanks a lot of you for this very nice overview with these new results. 196 00:16:44,940 --> 00:16:52,830 Other questions? I don't see any hands raised yet. So maybe I asked a quick 197 00:16:52,830 --> 00:16:58,920 question myself. So on page 12, I'm not sure if I fully understood why your 198 00:16:58,920 --> 00:17:04,380 signals so you say Your signal strength is 4.8 with an uncertainty of 4.05. But 199 00:17:04,410 --> 00:17:08,250 wouldn't that mean that you that you underestimate? I mean, maybe I don't 200 00:17:08,250 --> 00:17:16,740 understand how you have defined signal strength here. So you have 20% less TT bar 201 00:17:16,770 --> 00:17:18,300 cross section than you expect. 202 00:17:18,689 --> 00:17:20,819 Yeah, that's that's very sad. Yes, 203 00:17:20,850 --> 00:17:24,780 this is the result and this is obtained from the maximum likelihood fit to this 204 00:17:24,810 --> 00:17:27,330 category. Say, Hello in this 205 00:17:27,329 --> 00:17:31,619 setting is 10, the scale factor the tagging the top dog in a scale factor 206 00:17:31,980 --> 00:17:35,970 and the normalization to ethnic categories, and this is the result that is 207 00:17:35,970 --> 00:17:36,630 found. Yes. 208 00:17:37,920 --> 00:17:42,870 Um, but, but on your last like you said, You're overestimating the cross section. 209 00:17:43,680 --> 00:17:47,490 I think my prediction is overestimating the cross section is what I say. 210 00:17:49,530 --> 00:17:52,830 I'm not sure if I fully understand it yet, but I I'll have a look. I see that there's 211 00:17:52,830 --> 00:17:55,410 one more race and Francesco Can you speak? 212 00:17:56,850 --> 00:18:02,130 Hello, this is Francesco again from Atlas Hello. Hello, how are you? Thanks a lot 213 00:18:02,130 --> 00:18:05,880 for the interesting presentation. I have a couple of questions on slide seven is late 214 00:18:05,880 --> 00:18:11,730 13. I'll try to make them quick so wasting time slide seven, I was wondering what is 215 00:18:11,730 --> 00:18:16,980 the role of Intel in terms of impacts of systematic uncertainty on the background 216 00:18:16,980 --> 00:18:21,960 subtraction on this in this measurement, particularly on the TT BJ 217 00:18:23,940 --> 00:18:26,970 Do you consider that as soon as you can see that as a backer, right, because you 218 00:18:26,970 --> 00:18:31,650 want to you want to dye factor IV VB? Yeah, in fact, 219 00:18:33,000 --> 00:18:34,230 yeah, I don't 220 00:18:34,230 --> 00:18:39,690 remember exactly the number but I know that this this finally status is 221 00:18:39,690 --> 00:18:45,630 extrapolated from the T divider, b a, and yet a final state so its presence is 222 00:18:45,660 --> 00:18:50,670 clearly important. I cannot tell you which is the exact number but this this number 223 00:18:50,670 --> 00:18:53,790 is it's important in the separation, this 224 00:18:55,980 --> 00:19:00,510 Francesco could we put further questions to a separate discussion because We are 225 00:19:00,510 --> 00:19:05,610 running late and the plenary session is already starting in about half an hour. 226 00:19:07,590 --> 00:19:11,820 Okay, can you do that except on bit of importance of the city by 227 00:19:11,820 --> 00:19:12,180 region? 228 00:19:14,219 --> 00:19:19,199 Yes. Have you do you also have an extra room for discussions are 229 00:19:19,229 --> 00:19:20,579 no but they can create their 230 00:19:20,580 --> 00:19:21,930 one. I can. 231 00:19:22,439 --> 00:19:28,169 I I thought that I could use my personal one. Maybe I can use it. 232 00:19:29,430 --> 00:19:35,820 Yes. Just put some information on your slides. Okay. Okay. I don't want to to 233 00:19:35,820 --> 00:19:38,010 discourage discussion just we have to move on.