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

Choudhury, S and Komaragiri, JR and Tiwari, PC and Sirunyan, AM and Tumasyan, A and Adam, W (2019) Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at root s=13 TeV. In: PHYSICAL REVIEW D, 99 (1).

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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 root s = 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 quark-antiquark pair. These constitute the first constraints from the LHC on exotic bottom quark-antiquark resonances with masses below 325 GeV.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW D
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright of this article belongs to AMER PHYSICAL SOC
Department/Centre:	Division of Interdisciplinary Sciences > Computational and Data Sciences Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	07 Feb 2019 12:25
Last Modified:	07 Feb 2019 12:25
URI:	http://eprints.iisc.ac.in/id/eprint/61678

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