TY  - SER
AU  - Aad,G.
AU  - Abbott,B.
AU  - Chelkov,G.A.
AU  - Khodinov,A.
AU  - Vaniachine,A.
AU  - Aaboud,M.
TI  - Search for top quark decays t → qH, with H → γγ, in √s=13 TeV pp collisions using the ATLAS detector
KW  - ATLAS, детектор
KW  - Большой адронный коллайдер
KW  - протон-протонные столкновения
KW  - Хиггса бозон
KW  - кварки
KW  - статьи в журналах
N1  - Библиогр.: 79 назв
N2  - This article presents a search for flavour-changing neutral currents in the decay of a top quark into an up-type (q = c, u) quark and a Higgs boson, where the Higgs boson decays into two photons. The proton-proton collision data set analysed amounts to 36.1 fb−1 at   s√=13  TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for, where one top quark decays into qH and the other decays into bW . Both the hadronic and leptonic decay modes of the W boson are used. No significant excess is observed and an upper limit is set on the t → cH branching ratio of 2.2 × 10−3 at the 95% confidence level, while the expected limit in the absence of signal is 1.6 × 10−3. The corresponding limit on the tcH coupling is 0.090 at the 95% confidence level. The observed upper limit on the t → uH branching ratio is 2.4 × 10−3
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000636294
ER  -