| 000 | 03585nlm1a2200445 4500 | ||
|---|---|---|---|
| 001 | 663199 | ||
| 005 | 20231030041846.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\34368 | ||
| 090 | _a663199 | ||
| 100 | _a20210129a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aMeasurement of the cross section for tt¯tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV _fA. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 67 tit.] | ||
| 330 | _aMeasurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯bb¯¯¯)(σtt¯bb¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj)(σtt¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt¯jjσtt¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt¯bb¯¯¯σtt¯bb¯ are determined from the product of the σtt¯jjσtt¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tJournal of High Energy Physics | ||
| 463 |
_tVol. 2020, iss. 7 _v[125, 45 p.] _d2020 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aHadron-Hadron scattering (experiments) | |
| 610 | 1 | _aTop physics | |
| 610 | 1 | _aJets | |
| 610 | 1 | _aадрон-адронное рассеяние | |
| 701 | 1 |
_aSirunyan _bA. M. |
|
| 701 | 1 |
_aTumasyan _bA. R. |
|
| 701 | 1 |
_aAdam _bW. _gWolfgang |
|
| 701 | 1 |
_aAmbrogi _bF. _gFederico |
|
| 701 | 1 |
_aBergauer _bTh. _gThomas |
|
| 701 | 1 |
_aZhokin _bA. S. _gAleksandr Sergeevich |
|
| 701 | 1 |
_aBabaev _bA. A. _cphysicist _cengineer-issledovatelskogo Polytechnic University, candidate of physical and mathematical Sciences _f1981- _gAnton Anatoljevich _2stltpush _3(RuTPU)RU\TPU\pers\35154 |
|
| 701 | 1 |
_aOkhotnikov _bV. V. _cphysicist _cengineer of Tomsk Polytechnic University _f1992- _gVitaly Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\36453 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа физики высокоэнергетических процессов _c(2017- ) _h8118 _2stltpush _3(RuTPU)RU\TPU\col\23551 |
| 801 | 2 |
_aRU _b63413507 _c20210129 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1007/JHEP07(2020)125 | |
| 942 | _cCF | ||