Measurement of the top quark Yukawa coupling from t¯t kinematic distributions in the dilepton final state in proton-proton collisions at √s=13  TeV

Measurement of the top quark Yukawa coupling from t¯t kinematic distributions in the dilepton final state in proton-proton collisions at √s=13  TeV

Detalles Bibliográficos
Parent link:Physical Review D: particles, fields, gravitation, and cosmology.— , 1970-
Vol. 102, iss. 9.— 2020.— [092013, 29 p.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Outros autores: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich, Sukhikh L. G. Leonid Grigorievich
Summary:Title screen
A measurement of the Higgs boson Yukawa coupling to the top quark is presented using proton-proton collision data at √s=13  TeV, corresponding to an integrated luminosity of 137  fb−1, recorded with the CMS detector. The coupling strength with respect to the standard model value, Yt, is determined from kinematic distributions in t¯t final states containing ee, μμ, or eμ pairs. Variations of the Yukawa coupling strength lead to modified distributions for t¯t production. In particular, the distributions of the mass of the t¯t system and the rapidity difference of the top quark and antiquark are sensitive to the value of Yt. The measurement yields a best fit value of Yt=1.16+0.24−0.35, bounding Yt<1.54 at a 95% confidence level.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglés
Publicado: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
Acceso en liña:https://doi.org/10.1103/PhysRevD.102.092013
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664673

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