1 00:00:03,389 --> 00:00:13,559 Hello, everyone, and welcome to the electroweak parallel sessions of HCP. So, 2 00:00:13,979 --> 00:00:20,189 in this session, we are looking at talks on precision physics from Atlas CMS HCP. 3 00:00:21,149 --> 00:00:26,849 And also effective field theory and drill. Yeah. So I suggest we just get started. 4 00:00:26,909 --> 00:00:32,219 And for the speakers, I will give you a five minute warning when you have five 5 00:00:32,219 --> 00:00:38,069 minutes left in your talk. And so up first, we have Alexi who will be telling 6 00:00:38,069 --> 00:00:42,269 us about electric precision measurements in Atlas. So when you're ready, Alexi. 7 00:00:43,710 --> 00:00:51,180 Okay, thank you. So good afternoon I was. It wasn't so so we'll talk about the 8 00:00:51,960 --> 00:00:55,950 measurements in our class. And we are interesting these measurements because we 9 00:00:56,640 --> 00:01:01,260 can test the self consistency of the standard model. So, as you can see on the 10 00:01:01,740 --> 00:01:08,850 plot on the top, we can compare the direct measurements of this tweak sector to in 11 00:01:08,850 --> 00:01:14,910 So, in the green bands to the global fits of the standard model so that you can see 12 00:01:14,910 --> 00:01:19,830 on the blue ellipse. And if we have some disagreement between these two kind of 13 00:01:19,830 --> 00:01:24,990 measurements we can have an indirect evidence of for new physics. And if we 14 00:01:24,990 --> 00:01:30,990 look at the electroweak symmetry breaking sector, we can better consigned w mass and 15 00:01:31,020 --> 00:01:38,100 weak mixing on gunfights and the jack measurements target uncertainties for the 16 00:01:38,130 --> 00:01:46,410 Wm. W mass is at the level of 10 MEP and for the week mixing so that deliver 10 17 00:01:46,620 --> 00:01:53,760 times 10 to the minus five. If we compare and observed of direct fit for the W mass 18 00:01:53,760 --> 00:02:00,120 we are on seven MTV while for the world or the average for the jack measurements. We 19 00:02:00,120 --> 00:02:05,790 are on 13 Emily, and for the week mixing NGO the electroweak fit that isn't in 20 00:02:05,790 --> 00:02:11,520 Sandton to about six times 10 to the minus five, while the water level edge of the 21 00:02:11,520 --> 00:02:19,920 direct measurements is around 16 times 10 to the minus five. And as you can see on 22 00:02:19,920 --> 00:02:23,940 the bottom plots we the energy measurements start to reach the lepanto 23 00:02:23,940 --> 00:02:36,690 veteran positions. So if we look at the or do we produce W and z bosons at HP we it's 24 00:02:36,690 --> 00:02:43,230 mainly from Qualcomm z Quark and elation coming from initial proton proton Korea. 25 00:02:44,100 --> 00:02:50,790 And we have a victor was on for this we very quick interaction that's the case. 26 00:02:51,630 --> 00:02:56,700 Also via a quick interaction into electronic pals while we look at 27 00:02:56,730 --> 00:03:06,000 electronic pairs to other low back on finance This dialogue on perils of non 28 00:03:06,000 --> 00:03:13,380 dual PT, cochlear on a mission initial state so because then we have a few CDs 29 00:03:13,380 --> 00:03:18,870 that plays an important role in the initial state and also the sick baton. 30 00:03:19,050 --> 00:03:19,440 some 31 00:03:20,820 --> 00:03:22,770 initial buttons are some interesting 32 00:03:24,750 --> 00:03:31,830 and usually when we look at the low PT Ll spectrum, we describe it better with soft 33 00:03:31,860 --> 00:03:38,370 piano submission and better matching models. And that's a PT. We discovered 34 00:03:38,370 --> 00:03:45,750 with fixed order batch batch TCT we've always thought on travels. So first about 35 00:03:45,750 --> 00:03:53,670 the W mass measurement we Atlas published resulting in 1887 TV assets. The method of 36 00:03:53,700 --> 00:04:00,000 measurement was based on the template fits on the conscious momentum of the laptop 37 00:04:00,000 --> 00:04:07,170 And the Tongass mass empty that is mainly based on the donek he called UT that is 38 00:04:07,170 --> 00:04:12,240 the sum in the Tonga span of the momentum of the energy deposits, that does not 39 00:04:12,240 --> 00:04:17,910 correspond to the electron. And the advantage of using these two different 40 00:04:17,910 --> 00:04:23,340 liable is that they are sensitive to difference uncertainties for the pitch of 41 00:04:23,340 --> 00:04:29,310 the lepton and the description depends on the pitch ie the meaning and the beauty of 42 00:04:29,310 --> 00:04:36,090 the W and we have larger theory uncertainties on that bat description and 43 00:04:36,090 --> 00:04:41,490 for the longest mass we must be sensitive to the Atlantic recall UTC So, was 44 00:04:41,490 --> 00:04:47,670 resolution was done with the pilot. So, if you look at the uncertain the breakdown of 45 00:04:47,670 --> 00:04:52,020 the uncertainties on this mass measurements, two main certainties come 46 00:04:52,020 --> 00:04:57,540 from the UCD modelling and the PF So, for the PF, this is large because we don't 47 00:04:57,540 --> 00:05:04,170 know well the W per la ization For the QC the uncertainties, it's mainly due to the 48 00:05:04,200 --> 00:05:10,650 PT w modeling, in fact, to describe the PT of the W epi mini on the form precise 49 00:05:10,650 --> 00:05:15,660 measurement of the Z boson and then we have some uncertainties coming from the Z 50 00:05:15,660 --> 00:05:21,180 to w x operation as you can see on the plot, we have large uncertainties on the W 51 00:05:21,180 --> 00:05:21,840 z ratio. 52 00:05:24,000 --> 00:05:24,990 So, to 53 00:05:26,670 --> 00:05:35,490 improve the W mas measurement we need to improve on knowledge of the btw. So, 54 00:05:35,490 --> 00:05:41,040 that's why we are interested mostly in low pileup data so because it has an 55 00:05:41,040 --> 00:05:46,260 sensitivity to the W mass because we measure better the contrast mass, but also 56 00:05:46,260 --> 00:05:53,310 we can measure the PT W. So that to know better the picture w we should measure 57 00:05:53,370 --> 00:06:00,450 measure h in five gv bins, so if you can see on the left plots to measure it Five 58 00:06:00,480 --> 00:06:07,590 GB means to have a five GB resolution on the coil we should measure it with by data 59 00:06:07,590 --> 00:06:15,900 with new about two and that's why Atlas is planning to use the new equal to data set 60 00:06:15,900 --> 00:06:24,330 taken at five TV and 13 TV to improve the body mass measurements with data such as 61 00:06:24,360 --> 00:06:28,590 you can see on the middle part on the middle we have a holiday uncertainty on 62 00:06:28,590 --> 00:06:34,770 the btw of about 1% that's reduced by a factor of two the btw modelling 63 00:06:34,770 --> 00:06:41,910 uncertainty on the W master measurement. So now about the weak mixing angle from 64 00:06:41,910 --> 00:06:49,350 the young measurement at that last so we for the results made public in some hour 65 00:06:49,380 --> 00:06:56,340 to 18 we rely on the on graph coefficients measurement so when you look at the proton 66 00:06:56,340 --> 00:07:02,820 proton to Z to Ll reaction, we can Describe the construction by next question 67 00:07:02,820 --> 00:07:08,280 in other monic polynomials with nine, putting on yours with some good on 68 00:07:08,280 --> 00:07:15,630 variable, Sadek, the describe the Z was on DK kinematics in the Queen's super fame. 69 00:07:16,410 --> 00:07:20,280 And we have also aids on black coefficients, press one and price 70 00:07:20,280 --> 00:07:25,440 collections that describe the Z position. And what is interesting for the witnessing 71 00:07:25,440 --> 00:07:33,270 is the coefficient a four that is function of the sine squared theta. So, the method 72 00:07:33,270 --> 00:07:36,840 is to fit the law constructed cos theta phi 73 00:07:38,190 --> 00:07:39,630 mln why 74 00:07:40,980 --> 00:07:48,240 vital in bond LNG was the mean to extract a fall in the fully developed on face 75 00:07:48,240 --> 00:07:55,680 space and in fair value of four cents quantity. The results we obtained that 76 00:07:55,710 --> 00:08:03,870 with the ATV data sets is displayed here in the is highlighted here in red. And as 77 00:08:03,870 --> 00:08:11,310 in total uncertainty of 46 times 10 to the minus five. And you can if you compare it 78 00:08:11,340 --> 00:08:16,320 to the left passage, the measurements in the blue rectangle and the divot one 79 00:08:16,920 --> 00:08:20,700 measurement in the green rectangle, you can see that this measurement is 80 00:08:20,700 --> 00:08:22,980 competitive with the previous measurement. 81 00:08:24,390 --> 00:08:26,730 And what is interesting to notice is that the Atlas 82 00:08:28,050 --> 00:08:34,230 results benefit from the input sensitivity when we use the forward end icons. So in 83 00:08:34,230 --> 00:08:38,700 the two diabetes range between 2.5 and 4.9, because in that occasion, we have a 84 00:08:38,700 --> 00:08:46,200 lower division that I wasn't happy. And in the talents on the genome, one of the 85 00:08:46,200 --> 00:08:51,030 maintenance systematic and something comes from the PDF that is mitigated by in fact 86 00:08:51,030 --> 00:08:55,800 profiling this reason spandrels because we can expect some cohesion in the MLM, the 87 00:08:55,800 --> 00:09:05,160 way you follow For the prospects on this since Capita measurements so far, we've 88 00:09:05,160 --> 00:09:11,880 the run to the sets we will have a large increase in kissing statistics. So 89 00:09:11,880 --> 00:09:17,040 compared to a few that I said we have much more luminosity available integrity 90 00:09:17,040 --> 00:09:21,990 luminosity very well, I have cross section, but it will it's a bit mitigated 91 00:09:21,990 --> 00:09:27,270 because we have an ion division because of the gaming machine case. So we will be 92 00:09:27,270 --> 00:09:34,320 able to use a final meaning in Zebulon RPGs to consign the PDF uncertainties. So 93 00:09:34,320 --> 00:09:43,350 we expect sensitivity on the sensor data about 25 times 10 to the mass. With the 94 00:09:43,350 --> 00:09:48,570 run free data sets, we will benefit from the grade of the system of Atlas to have 95 00:09:48,570 --> 00:09:53,310 an improved together efficiencies on both moons and electrons. We will be able to 96 00:09:53,310 --> 00:10:03,540 keep floppy deficient on leptons, and we'll be able to to If we look at suppose 97 00:10:04,680 --> 00:10:10,410 the mass and this week mixing angle with the luminosity energy phase, we will 98 00:10:10,410 --> 00:10:15,780 benefit from the light, the gate of the ATLAS detector. And mainly we will have a 99 00:10:15,780 --> 00:10:19,830 new tracking system with an extended coverage we'll go with a tracking system 100 00:10:19,890 --> 00:10:27,210 up to it to the PTT run up to four. And we will have also timing detect on the 101 00:10:27,210 --> 00:10:33,420 formation so the GTD to have a bit of pileup back on projection. So at the end, 102 00:10:33,750 --> 00:10:40,410 you can see on the left plots we expect sensitivity on the web is of the order of 103 00:10:40,440 --> 00:10:48,600 10. Emily we've some low but bail up data and for the same square Tita so you can 104 00:10:48,600 --> 00:10:54,150 see on the right, we expect a sensitive of the order of 15 times 10 to the mass five. 105 00:10:57,330 --> 00:11:05,790 So now we go on more Recent results was that was made up some. So that's the see 106 00:11:05,790 --> 00:11:06,030 of the 107 00:11:06,660 --> 00:11:09,630 display five minutes every morning. Okay, thank you. 108 00:11:11,250 --> 00:11:15,990 So that's, I will discuss what the Dalian has dealt with fetching TV data set with 109 00:11:17,400 --> 00:11:23,100 36 investment amount of data. So it's a study of the Z gamma star, the king to 110 00:11:23,760 --> 00:11:28,350 lepton Bell, so electrons are fermions and we look at the PT of the dilettante and 111 00:11:28,350 --> 00:11:34,860 the five star variable. So the first phase star variable is defined here in the black 112 00:11:34,890 --> 00:11:42,000 rectangle. And the main things to hear to to attend is it depends only on the 113 00:11:42,000 --> 00:11:46,830 leptons directions, not on the momenta of the atom leptons, so it's less sensitive 114 00:11:46,830 --> 00:11:53,280 to the momentum resolution than scale uncertainties. And this is not strictly 115 00:11:53,280 --> 00:11:58,440 speaking, speaking in precision, a quick measurement, but it's an important input 116 00:11:58,440 --> 00:12:04,050 for the bug on production in the BIM Standard Model searches, but also it's in 117 00:12:04,080 --> 00:12:08,460 this piece, pictures input for this term atomic Standard Model precision 118 00:12:08,460 --> 00:12:14,250 measurements, find some size I presented previously, the value mass measurements 119 00:12:14,280 --> 00:12:21,720 relies on the WC PT ratio. So, the better we know the CPT the better we be the W 120 00:12:21,720 --> 00:12:28,170 must merriment and compared to the lower energies using 13 t data sets, we will 121 00:12:28,170 --> 00:12:34,050 have different flavor composition and a lot of free space for art continuation. If 122 00:12:34,050 --> 00:12:40,320 additional volume using this as analysis is with the Frankfurt so pitchy left on 123 00:12:40,560 --> 00:12:48,210 ladders on 25 gV absurd the RPG of the returns below 2.5 in absolute value, and 124 00:12:48,210 --> 00:12:55,800 the daily mass between 66 and 116 G, the hazards agenda unfolded that's born and 125 00:12:55,800 --> 00:13:02,550 rest levels and this channel is particularly, particularly clean the 126 00:13:02,550 --> 00:13:11,400 bucket. Bagram faction is at the level of 4.5%. And mainly it was and Tiki Bar 127 00:13:11,460 --> 00:13:19,560 horses. So you can see on the top plots, that's the beauty of the dialect on 128 00:13:19,560 --> 00:13:25,770 channel. The bottom it's for the main channel. And in black, the black points 129 00:13:25,770 --> 00:13:32,850 are the data or the data and in blue, it's the black plus Petia eight signal sample. 130 00:13:34,020 --> 00:13:38,850 in yellow, that's the Monte Carlo prediction for the electroweak top 131 00:13:38,880 --> 00:13:47,100 background. And in red, that's the movie jets data driven prediction for the buck. 132 00:13:47,910 --> 00:13:55,200 And you can see also in the insults, the ratio data collection ratio, and you can 133 00:13:55,200 --> 00:13:57,270 see it's IPT the 134 00:13:59,160 --> 00:14:00,840 under The data 135 00:14:04,470 --> 00:14:13,560 so you decide the results, you can see the results on the left. So on the on the W 136 00:14:13,590 --> 00:14:20,100 for the PT variable and the bottom is for the five star variable. In yellow you have 137 00:14:20,160 --> 00:14:26,100 the hazards for the electron channel and in orange you have the father Mian 138 00:14:26,100 --> 00:14:30,450 channel. And in rules that's the combination of the two channel and the 139 00:14:30,450 --> 00:14:35,130 combination of some of the systemic uncertainties because we have some 140 00:14:35,490 --> 00:14:44,220 uncorrelated surface medical science and the precision below 30 gV in PT is the 141 00:14:44,220 --> 00:14:51,000 level level of 4.2% and we have a good agreement between the electronic and music 142 00:14:51,180 --> 00:14:56,040 channel. The main uncertainties come from the left angle construction and 143 00:14:56,070 --> 00:15:05,670 identification uncertainties 4g absolute cross section measurements in the table at 144 00:15:05,670 --> 00:15:10,320 the top of the slide. It's mainly coming from the momentum scan on the position for 145 00:15:10,320 --> 00:15:16,890 the PT, and also on the limousine. And with that results, we can compare it to 146 00:15:16,890 --> 00:15:23,490 some prediction. That's what you get here on the top for pgl. And on bottom for five 147 00:15:23,490 --> 00:15:28,620 star and we in red you have the sharper prediction and you can see that it's the 148 00:15:29,190 --> 00:15:38,850 sky well the data for pitiable 30 gV. And and it can this data can be used to 149 00:15:38,850 --> 00:15:44,010 transmit other data into our settings set up for the haddish prediction. So in 150 00:15:44,010 --> 00:15:50,070 green, it uses fixed order next to next eating order with some reservation that's 151 00:15:50,070 --> 00:15:56,610 ntdll. And it's in good agreement about the full spectrum at one free sounds level 152 00:15:57,180 --> 00:16:05,670 and in blue, you have The point the speaker hates position with the ASEAN ello 153 00:16:05,670 --> 00:16:14,100 tune and the improper use of the PISA aids connection with the ICJ. And before I 154 00:16:14,100 --> 00:16:20,610 describe Well, the data below PT, for G, but at IPT, we missed some IO connection, 155 00:16:20,610 --> 00:16:27,630 so it does not do a great job. So, in summary, it's to describe weather data 156 00:16:27,660 --> 00:16:30,930 over the full spectrum at present level, we need the state of the art and then a 157 00:16:30,930 --> 00:16:40,500 low plus and PLL. Connection. And finally to if we focus on the IPT above 10, gv. If 158 00:16:40,500 --> 00:16:46,260 we look at an anello jets prediction in green, so without any submission, we 159 00:16:46,260 --> 00:16:52,440 expect it to describe Well, the data from PT above 15 gV, that's the case except 160 00:16:52,440 --> 00:16:57,690 that the IPT where we are above the data, and if we include the directory 161 00:16:57,690 --> 00:17:04,410 collection. So that's the blueprint Hydrogen, we have some suppression at IPT. 162 00:17:04,410 --> 00:17:10,170 But that will be too strong because we blew the petition out below the data. But 163 00:17:10,170 --> 00:17:13,590 most discrepancies are not really significant and we are within the 164 00:17:13,590 --> 00:17:18,630 measurement uncertainties. So in summary with the cons statistics we cannot yet be, 165 00:17:19,050 --> 00:17:25,260 we are not yet sensitive to the collections. So, to conclude, the Atlas 166 00:17:25,440 --> 00:17:30,060 ATLAS experiment is well suited to pursue precise measurements in the electric 167 00:17:30,060 --> 00:17:36,180 sector. We are reaching the lepen study until at one position and the many 168 00:17:36,270 --> 00:17:41,670 mutation is in the future to get precise prediction, especially coming from the PDF 169 00:17:41,670 --> 00:17:46,560 uncertainties and experimental, unfeeling communities, and they need to work 170 00:17:46,560 --> 00:17:52,050 together to extract the NHD data up to the identity face. Thank you for your 171 00:17:52,050 --> 00:17:52,470 attention. 172 00:17:53,970 --> 00:17:58,950 Thank you for a very nice talk there. We have time for questions, so does anyone 173 00:17:58,950 --> 00:18:00,660 with a question wish to raise The hand 174 00:18:13,349 --> 00:18:17,519 I don't see any raised hands if I'm missing one I could ask a question if I 175 00:18:17,519 --> 00:18:21,209 may, I cannot raise my hand as an organizer but this is iOS. 176 00:18:22,349 --> 00:18:28,379 I wanted to ask if you could say a few more words about how the PDF profiling 177 00:18:28,379 --> 00:18:32,579 works for the week mixing a lot today again, measurement 178 00:18:36,900 --> 00:18:39,900 by music basically you we benefit from 179 00:18:42,539 --> 00:18:44,309 so the the PDF 180 00:18:46,410 --> 00:18:48,540 player holes in the 181 00:18:50,640 --> 00:18:52,350 well you you 182 00:18:52,349 --> 00:18:56,969 have some effects different effects in the NLL beans and wire l bean. So you have 183 00:18:57,179 --> 00:19:03,209 different correlations. So, we expect basically this coalition to consent better 184 00:19:03,209 --> 00:19:13,289 the the the question in the fit, because we do functionally so the PDF oven 185 00:19:13,649 --> 00:19:20,579 especially a hole in the ye Ll distribution, but also in MLM. So and the 186 00:19:20,609 --> 00:19:29,759 sine square theta does not. value does not very much in the MLS, different MLS means 187 00:19:29,789 --> 00:19:37,409 when you're close to the port, so so that you can it comes in the effect of the PDFs 188 00:19:37,859 --> 00:19:39,359 on the same squatted measurement. 189 00:19:41,280 --> 00:19:41,970 Things. 190 00:19:43,829 --> 00:19:46,079 Let's thank the speaker again, 191 00:19:47,369 --> 00:19:50,639 though. I don't think everyone should unmute and clap. 192 00:19:51,990 --> 00:19:52,710 Yeah. 193 00:19:53,069 --> 00:19:59,849 So up next we have a talk from Ilia who is going to tell us about electronic decision 194 00:19:59,849 --> 00:20:01,049 makers. In CMS