Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at s =13 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at s =13 TeV. Physical Review D, 99 (1). pp. 1-25. ISSN 2470-0010 E-ISSN 2470-0029

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Abstract

A search for narrow, low-mass, scalar, and pseudoscalar resonances decaying to bottom quark-antiquark pairs is presented. The search is based on events recorded in ffiffi s p ¼ 13 TeV proton-proton collisions with the CMS detector at the LHC, collected in 2016, and corresponding to an integrated luminosity of 35.9 fb−1. The search selects events in which the resonance would be produced with high transverse momentum because of the presence of initial- or final-state radiation. In such events, the decay products of the resonance would be reconstructed as a single large-radius jet with high mass and two-prong substructure. A potential signal would be identified as a narrow excess in the jet invariant mass spectrum. No evidence for such a resonance is observed within the mass range from 50 to 350 GeV, and upper limits at 95% confidence level are set on the product of the cross section and branching fraction to a bottom quarkantiquark pair. These constitute the first constraints from the LHC on exotic bottom quark-antiquark resonances with masses below 325 GeV.

Item Type:	Article (Journal)
Additional Information:	7861/71629
Uncontrolled Keywords:	Low-mass resonances; Bottom quark-antiquark; Proton-proton collisions
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	16 Apr 2019 11:50
Last Modified:	12 Jul 2019 11:20
URI:	http://irep.iium.edu.my/id/eprint/71629

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