TY  - SER
AU  - Aad,G.
AU  - Abbott,B.
AU  - Chelkov,G.A.
AU  - Khodinov,A.
AU  - Vaniachine,A.
AU  - Aaboud,M.
TI  - Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector
KW  - кварки
KW  - лептоны
KW  - Большой адронный коллайдер
KW  - ATLAS, детектор
KW  - протон-протонные столкновения
KW  - статьи в журналах
N1  - Библиогр.: 77 назв
N2  - The results of a search for vector-like top quarks using events with exactly one lepton, at least four jets, and large missing transverse momentum are reported. The search is optimised for pair production of vector-like top quarks in the Z(→νν) t + X decay channel. LHC pp collision data at a centre-of-mass energy of   s√=13  TeV recorded by the ATLAS detector in 2015 and 2016 are used, corresponding to an integrated luminosity of 36.1 fb−1. No significant excess over the Standard Model expectation is seen and upper limits on the production cross-section of a vector-like T quark pair as a function of the T quark mass are derived. The observed (expected) 95% CL lower limits on the T mass are 870 GeV (890 GeV) for the weak-isospin singlet model, 1.05 TeV (1.06 TeV) for the weak-isospin doublet model and 1.16 TeV (1.17 TeV) for the pure Zt decay mode. Limits are also set on the mass as a function of the decay branching ratios, excluding large parts of the parameter space for masses below 1 TeV
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000635556
ER  -