Search for long-lived particles decaying into muon pairs in proton-proton collisions at √s = 13 TeV collected with a dedicated high-rate data stream

A search for long-lived particles decaying into muon pairs is performed using proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment at the LHC in 2017 and 2018, corresponding to an integrated luminosity of 101 fb(-1). The data sets used in this search were co...

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Bibliographic Details
Published in:Journal of high energy physics Vol. 4. P. 62 (1-44)
Other Authors: Tumasyan, Armen, Adam, Wolfgang, Andrejkovic, Janik Walter, Borshch, Vladislav, Ivanchenko, Vladimir, Tcherniaev, Evgueni
Format: Article
Language:English
Subjects:
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002192
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520 3 |a A search for long-lived particles decaying into muon pairs is performed using proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment at the LHC in 2017 and 2018, corresponding to an integrated luminosity of 101 fb(-1). The data sets used in this search were collected with a dedicated dimuon trigger stream with low transverse momentum thresholds, recorded at high rate by retaining a reduced amount of information, in order to explore otherwise inaccessible phase space at low dimuon mass and nonzero displacement from the primary interaction vertex. No significant excess of events beyond the standard model expectation is found. Upper limits on branching fractions at 95% confidence level are set on a wide range of mass and lifetime hypotheses in beyond the standard model frameworks with the Higgs boson decaying into a pair of long-lived dark photons, or with a long-lived scalar resonance arising from a decay of a b hadron. The limits are the most stringent to date for substantial regions of the parameter space. These results can be also used to constrain models of displaced dimuons that are not explicitly considered in this paper. 
653 |a протон-протонные столкновения 
653 |a мюонные пары 
653 |a Хиггса бозон 
653 |a димюоны 
655 4 |a статьи в журналах  |9 886425 
700 1 |a Tumasyan, Armen  |9 510818 
700 1 |a Adam, Wolfgang  |9 510819 
700 1 |a Andrejkovic, Janik Walter  |9 882239 
700 1 |a Borshch, Vladislav  |9 510820 
700 1 |a Ivanchenko, Vladimir  |9 500157 
700 1 |a Tcherniaev, Evgueni  |9 500158 
773 0 |t Journal of high energy physics  |d 2022  |g Vol. 4. P. 62 (1-44)  |x 1126-6708 
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