A multi-dimensional search for new heavy resonances decaying to boosted W W, W Z , or Z Z boson pairs in the dijet final state at 13 TeV

A multi-dimensional search for new heavy resonances decaying to boosted W W, W Z , or Z Z boson pairs in the dijet final state at 13 TeV

Bibliografische gegevens
Parent link:European Physical Journal C
Vol. 80, iss. 3.— 2020.— [237, 34 p.]
Coauteur: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Andere auteurs: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich
Samenvatting:Title screen
A search in an all-jet final state for new massive resonances decaying to W W , W Z , or Z Z boson pairs using a novel analysis method is presented. The analysis is performed on data corresponding to an integrated luminosity of 77.3 fb−1 recorded with the CMS experiment at the LHC at a centre-of-mass energy of 13 TeV. The search is focussed on potential narrow-width resonances with masses above 1.2 TeV, where the decay products of each W or Z boson are expected to be collimated into a single, large-radius jet. The signal is extracted using a three-dimensional maximum likelihood fit of the two jet masses and the dijet invariant mass, yielding an improvement in sensitivity of up to 30% relative to previous search methods. No excess is observed above the estimated standard model background. In a heavy vector triplet model, spin-1 Z′Z′ and W′W′ resonances with masses below 3.5 and 3.8 TeV, respectively, are excluded at 95% confidence level. In a bulk graviton model, upper limits on cross sections are set between 27 and 0.2 fbfb for resonance masses between 1.2 and 5.2 TeV, respectively. The limits presented in this paper are the best to date in the dijet final state.
Режим доступа: по договору с организацией-держателем ресурса
Gepubliceerd in: 2020
Onderwerpen:
электронный ресурс
труды учёных ТПУ
CMS
physics
diboson resonances
substructure
Online toegang:https://doi.org/10.1140/epjc/s10052-020-7773-5
Formaat: Elektronisch Hoofdstuk
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666355

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