Search for single production of vector-like quarks decaying to a b quark and a Higgs boson

Search for single production of vector-like quarks decaying to a b quark and a Higgs boson

Bibliographische Detailangaben
Parent link:Journal of High Energy Physics
Vol. 2018, iss. 6.— 2018.— [31, 41 p.]
Körperschaft: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Weitere Verfasser: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich
Zusammenfassung:Title screen
A search is presented for single production of heavy vector-like quarks (B) that decay to a Higgs boson and a b quark, with the Higgs boson decaying to a highly boosted bb¯¯¯bb¯ pair reconstructed as a single collimated jet. The analysis is based on data collected by the CMS experiment in proton-proton collisions at s√=13s=13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The data are consistent with background expectations, and upper limits at 95% confidence level on the product of the B quark cross section and the branching fraction are obtained in the range 1.28-0.07 pb, for a narrow B quark with a mass between 700 and 1800 GeV. The production of B quarks with widths of 10, 20 and 30% of the resonance mass is also considered, and the sensitivities obtained are similar to those achieved in the narrow width case. This is the first search at the CERN LHC for the single production of a B quark through its fully hadronic decay channel, and the first study considering finite resonance widths of the B quark.
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2018
Schlagworte:
электронный ресурс
труды учёных ТПУ
hadron-hadron scattering (experiments)
beyond standard model
vector-like quarks
адрон-адронные столкновения
Online-Zugang:https://doi.org/10.1007/JHEP06(2018)031
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661138

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