Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at s√=8s=8 and 13 TeV; Journal of High Energy Physics; Vol. 2018, iss. 11

Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at s√=8s=8 and 13 TeV; Journal of High Energy Physics; Vol. 2018, iss. 11

Bibliographic Details
Parent link:Journal of High Energy Physics
Vol. 2018, iss. 11.— 2018.— [161, 37 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Bocci A. Alessio, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Summary:Title screen
A search for resonances in the mass range 12-70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass energies of 8 and 13 TeV, collected with the CMS detector at the LHC and corresponding to integrated luminosities of 19.7 and 35.9 fb−1, respectively. The search is carried out in two mutually exclusive event categories. Events in the first category are required to have a b quark jet in the central region (|η| ≤ 2.4) and at least one jet in the forward region (|η| > 2.4). Events in the second category are required to have two jets in the central region, at least one of which is identified as a b quark jet, no jets in the forward region, and low missing transverse momentum. An excess of events above the background near a dimuon mass of 28 GeV is observed in the 8 TeV data, corresponding to local significances of 4.2 and 2.9 standard deviations for the first and second event categories, respectively. A similar analysis conducted with the 13 TeV data results in a mild excess over the background in the first event category corresponding to a local significance of 2.0 standard deviations, while the second category results in a 1.4 standard deviation deficit. The fiducial cross section measurements and 95% confidence level upper limits on those for a resonance consistent with the 8 TeV excess are provided at both collision energies.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
Beyond Standard Model
hadron-hadron scattering (experiments)
higgs physics
взаимодействие
адрон-адронное рассеяние
физика
Online Access:https://doi.org/10.1007/JHEP11(2018)161
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659297

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