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Search for pair production of vector-like quarks in the bw(b)over-barw channel from proton-proton collisions at root s=13tev

文献类型:期刊论文

作者Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Ambrogi, F.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Ero, J.2
刊名Physics letters b
出版日期2018-04-10
卷号779页码:82-106
ISSN号0370-2693
关键词Cms Physics Vector-like quarks
DOI10.1016/j.physletb.2018.01.077
通讯作者Sirunyan, a. m.()
英文摘要A search is presented for the production of vector-like quark pairs, t (t) over bar or y (y) over bar, with electric charge of 2/3(t) or -4/3(y), in proton-proton collisions at root s= 13 tev. the data were collected by the cms experiment at the lhc in 2016 and correspond to an integrated luminosity of 35.8 fb(-1). the t and y quarks are assumed to decay exclusively to a w boson and a b quark. the search is based on events with a single isolated electron or muon, large missing transverse momentum, and at least four jets with large transverse momenta. in the search, a kinematic reconstruction of the final state observables is performed, which would permit a signal to be detected as a narrow mass peak (approximate to 7% resolution). the observed number of events is consistent with the standard model prediction. assuming strong pair production of the vector-like quarks and a 100% branching fraction to bw, a lower limit of 1295 gev at 95% confidence level is set on the t and y quark masses. (c) 2018 the author(s). published by elsevier b.v.
WOS关键词HIGGS THEORIES
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:000429098900011
URI标识http://www.irgrid.ac.cn/handle/1471x/2178116
专题高能物理研究所
通讯作者Sirunyan, A. M.
作者单位1.Yerevan Phys Inst, Yerevan, Armenia
2.Inst Hochenergiephys, Vienna, Austria
3.Inst Nucl Problems, Minsk, Byelarus
4.Univ Antwerp, Antwerp, Belgium
5.Vrije Univ Brussel, Brussels, Belgium
6.Univ Libre Bruxelles, Brussels, Belgium
7.Univ Ghent, Ghent, Belgium
8.Catholic Univ Louvain, Louvain La Neuve, Belgium
9.Univ Mons, Mons, Belgium
10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
推荐引用方式
GB/T 7714
Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Search for pair production of vector-like quarks in the bw(b)over-barw channel from proton-proton collisions at root s=13tev[J]. Physics letters b,2018,779:82-106.
APA Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Ambrogi, F..,Asilar, E..,...&Oropeza Barrera, C..(2018).Search for pair production of vector-like quarks in the bw(b)over-barw channel from proton-proton collisions at root s=13tev.Physics letters b,779,82-106.
MLA Sirunyan, A. M.,et al."Search for pair production of vector-like quarks in the bw(b)over-barw channel from proton-proton collisions at root s=13tev".Physics letters b 779(2018):82-106.

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