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Measurement of the semileptonic t(t)over-bar + gamma production cross section in pp collisions at root s=8 tev

文献类型:期刊论文

作者Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2; Flechl, M.2
刊名Journal of high energy physics
出版日期2017-10-02
期号10页码:42
关键词Hadron-hadron scattering (experiments) Top physics
ISSN号1029-8479
DOI10.1007/jhep10(2017)006
通讯作者Sirunyan, a. m.()
英文摘要A measurement of the cross section for top quark-antiquark (t (t) over bar) pairs produced in association with a photon in proton-proton collisions at root s = 8tev is presented. the analysis uses data collected with the cms detector at the lhc, corresponding to an integrated luminosity of 19.7 fb(1). the signal is de fined as the production of a t (t) over bar pair in association with a photon having a transverse energy larger than 25 gev and an absolute pseudorapidity smaller than 1.44. the measurement is performed in the fiducial phase space corresponding to the semileptonic decay chain of the t (t) over bar pair, and the cross section is measured relative to the inclusive t (t) over bar pair production cross section. the fiducial cross section for associated t (t) over bar pair and photon production is found to be 127 +/- 27 (stat + syst) fb per semileptonic final state. the measured value is in agreement with the theoretical prediction.
WOS关键词HADRON COLLIDERS ; BOSON PRODUCTION ; CROSS-SECTION ; O(ALPHA(2)(S)) ; LHC
WOS研究方向Physics
WOS类目Physics, Particles & Fields
语种英语
WOS记录号WOS:000412101600006
出版者SPRINGER
URI标识http://www.irgrid.ac.cn/handle/1471x/2177109
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.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus
5.Univ Antwerp, Antwerp, Belgium
6.Vrije Univ Brussel, Brussels, Belgium
7.Univ Libre Bruxelles, Brussels, Belgium
8.Univ Ghent, Ghent, Belgium
9.Catholic Univ Louvain, Louvain La Neuve, Belgium
10.Univ Mons, Mons, Belgium
推荐引用方式
GB/T 7714
Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Measurement of the semileptonic t(t)over-bar + gamma production cross section in pp collisions at root s=8 tev[J]. Journal of high energy physics,2017(10):42.
APA Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Hoorani, H. R..(2017).Measurement of the semileptonic t(t)over-bar + gamma production cross section in pp collisions at root s=8 tev.Journal of high energy physics(10),42.
MLA Sirunyan, A. M.,et al."Measurement of the semileptonic t(t)over-bar + gamma production cross section in pp collisions at root s=8 tev".Journal of high energy physics .10(2017):42.

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来源:高能物理研究所

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