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Cross section measurement of t-channel single top quark production in pp collisions at root s=13 tev

文献类型:期刊论文

作者Sirunyan, A. M.2; Tumasyan, A.2; Adam, W.3; Asilar, E.3; Bergauer, T.3; Brandstetter, J.3; Brondolin, E.3; Dragicevic, M.3; Eroe, J.3; Flechl, M.3
刊名Physics letters b
出版日期2017-09-10
卷号772页码:752-776
ISSN号0370-2693
关键词Cms Physics Top quark
DOI10.1016/j.physletb.2017.07.047
通讯作者Sirunyan, a. m.(cms-publication-committee-chair@cern.ch)
英文摘要The cross section for the production of single top quarks in the t channel is measured in proton- proton collisions at 13tev with the cms detector at the lhc. the analyzed data correspond to an integrated luminosity of 2.2fb(-1). the event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark. several kinematic variables are then combined into a multivariate discriminator to distinguish signal from background events. a fit to the distribution of the discriminating variable yields a total cross section of 238 +/- 13 (stat)+/- 29(syst) pband a ratio of top quark and top antiquark production of rt-ch.= 1.81 +/- 0.18 (stat)+/- 0.15(syst). from the total cross section the absolute value of the ckm matrix element vtbis calculated to be 1.05 +/- 0.07 (exp)+/- 0.02(theo). all results are in agreement with the standard model predictions. (c) 2017 the author(s). published by elsevier b.v.
WOS关键词PARTON DISTRIBUTIONS ; LHC
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000411369700108
URI标识http://www.irgrid.ac.cn/handle/1471x/2177160
专题高能物理研究所
通讯作者Sirunyan, A. M.
作者单位1.CERN, Geneva, Switzerland
2.Yerevan Phys Inst, Yerevan, Armenia
3.Inst Hochenergiephys, Vienna, Austria
4.Inst Nucl Problems, Minsk, Byelarus
5.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus
6.Univ Antwerp, Antwerp, Belgium
7.Vrije Univ Brussel, Brussels, Belgium
8.Univ Libre Bruxelles, Brussels, Belgium
9.Univ Ghent, Ghent, Belgium
10.Catholic Univ Louvain, Louvain Ia Neuve, Belgium
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GB/T 7714
Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Cross section measurement of t-channel single top quark production in pp collisions at root s=13 tev[J]. Physics letters b,2017,772:752-776.
APA Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Carpinteyro, S..(2017).Cross section measurement of t-channel single top quark production in pp collisions at root s=13 tev.Physics letters b,772,752-776.
MLA Sirunyan, A. M.,et al."Cross section measurement of t-channel single top quark production in pp collisions at root s=13 tev".Physics letters b 772(2017):752-776.

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来源:高能物理研究所

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