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research article

Search for a high-mass dimuon resonance produced in association with b quark jets at √s=13 TeV

Hayrapetyan, A.
•
Tumasyan, A.
•
Adam, W.
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October 6, 2023
Journal of High Energy Physics

A search for high-mass dimuon resonance production in association with one or more b quark jets is presented. The study uses proton-proton collision data collected with the CMS detector at the LHC corresponding to an integrated luminosity of 138 fb(-1) at a center-of-mass energy of 13 TeV. Model-independent limits are derived on the number of signal events with exactly one or more than one b quark jet. Results are also interpreted in a lepton-flavor-universal model with Z boson couplings to a bb quark pair (g(b)), an sb quark pair (g(b)delta(bs)), and any same-flavor charged lepton (g(l)) or neutrino pair (g(nu)), with |g(nu)| = |g(l)|. For a Z ' boson with a mass mZ ' = 350 GeV (2 TeV) and |delta(bs)| < 0.25, the majority of the parameter space with 0.0057 < |g(l)| < 0.35 (0.25 < |g(l)| < 0.43) and 0.0079 < |g(b)| < 0.46 (0.34 < |g(b)| < 0.57) is excluded at 95% confidence level. Finally, constraints are set on a Z ' model with parameters consistent with low-energy b -> sll measurements. In this scenario, most of the allowed parameter space is excluded for a Z ' boson with 350 < mZ ' < 500 GeV, while the constraints are less stringent for higher mZ ' hypotheses. This is the first dedicated search at the LHC for a high-mass dimuon resonance produced in association with multiple b quark jets, and the constraints obtained on models with this signature are the most stringent to date.

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Type
research article
DOI
10.1007/JHEP10(2023)043
Web of Science ID

WOS:001091367900001

Author(s)
Hayrapetyan, A.
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Del Valle, A. Escalante
Hussain, P. S.
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Corporate authors
CMS Collaboration
Date Issued

2023-10-06

Publisher

Springer Nature

Published in
Journal of High Energy Physics
Issue

10

Start page

43

Subjects

Physical Sciences

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Beyond Standard Model

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Hadron-Hadron Scattering

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Jets

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Bottom Quarks

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
FunderGrant Number

SC (Armenia)

BMBWF (Austria)

FNRS (Belgium)

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Available on Infoscience
February 19, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/204084
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