Search for long-lived particles using displaced jets in proton-proton collisions at √s=13  TeV

Search for long-lived particles using displaced jets in proton-proton collisions at √s=13  TeV

Bibliografiske detaljer
Parent link:Physical Review D: particles, fields, gravitation, and cosmology.— , 1970-
Vol. 104, iss. 1.— 2021.— [012015, 38 p.]
Institution som forfatter: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Andre forfattere: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich, Sukhikh L. G. Leonid Grigorievich
Summary:Title screen
An inclusive search is presented for long-lived particles using displaced jets. The search uses a data sample collected with the CMS detector at the CERN LHC in 2017 and 2018, from proton-proton collisions at a center-of-mass energy of 13 TeV. The results of this search are combined with those of a previous search using a data sample collected with the CMS detector in 2016, yielding a total integrated luminosity of 132  fb−1. The analysis searches for the distinctive topology of displaced tracks and displaced vertices associated with a dijet system. For a simplified model, where pair-produced long-lived neutral particles decay into quark-antiquark pairs, pair production cross sections larger than 0.07 fb are excluded at 95% confidence level (C.L.) for long-lived particle masses larger than 500 GeV and mean proper decay lengths between 2 and 250 mm. For a model where the standard model-like Higgs boson decays to two long-lived scalar particles that each decays to a quark-antiquark pair, branching fractions larger than 1% are excluded at 95% C.L. for mean proper decay lengths between 1 mm and 340 mm. A group of supersymmetric models with pair-produced long-lived gluinos or top squarks decaying into various final-state topologies containing displaced jets is also tested. Gluino masses up to 2500 GeV and top squark masses up to 1600 GeV are excluded at 95% C.L. for mean proper decay lengths between 3 and 300 mm. The highest lower bounds on mass reach 2600 GeV for long-lived gluinos and 1800 GeV for long-lived top squarks. These are the most stringent limits to date on these models.
Режим доступа: по договору с организацией-держателем ресурса
Sprog:engelsk
Udgivet: 2021
Fag:
электронный ресурс
труды учёных ТПУ
Online adgang:http://earchive.tpu.ru/handle/11683/72490
https://doi.org/10.1103/PhysRevD.104.012015
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667011

Lignende værker

Lignende værker