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Title: Search for low-mass quark-antiquark resonances produced in association with a photon at $$\sqrt{s} = $$ 13 TeV

Abstract

A search for narrow low-mass resonances decaying to quark-antiquark pairs is presented. The search is based on proton-proton collisions events collected at 13 TeV by the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 35.9 fb$$^{-1}$$, recorded in 2016. The search considers the case where the resonance has high transverse momentum due to initial-state radiation of a photon. To study this process, the decay products of the resonance are reconstructed as a single large-radius jet with two-pronged substructure. The signal is identified as a localized excess in the jet invariant mass spectrum. No evidence for such a resonance is observed in the mass range 10 to 125 GeV. Upper limits at the 95% confidence level are set on the coupling strength of vector resonances decaying to quark pairs. The results obtained with this novel technique provide the first direct constraints on quark-antiquark resonance masses below 50 GeV obtained at a hadron collider.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS
OSTI Identifier:
1542171
Report Number(s):
FERMILAB-PUB-19-320-CMS; arXiv:1905.10331; CMS-EXO-17-027; CERN-EP-2019-068
1736729
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sirunyan, Albert M, and et al. Search for low-mass quark-antiquark resonances produced in association with a photon at $\sqrt{s} = $ 13 TeV. United States: N. p., 2019. Web.
Sirunyan, Albert M, & et al. Search for low-mass quark-antiquark resonances produced in association with a photon at $\sqrt{s} = $ 13 TeV. United States.
Sirunyan, Albert M, and et al. Fri . "Search for low-mass quark-antiquark resonances produced in association with a photon at $\sqrt{s} = $ 13 TeV". United States. https://www.osti.gov/servlets/purl/1542171.
@article{osti_1542171,
title = {Search for low-mass quark-antiquark resonances produced in association with a photon at $\sqrt{s} = $ 13 TeV},
author = {Sirunyan, Albert M and et al.},
abstractNote = {A search for narrow low-mass resonances decaying to quark-antiquark pairs is presented. The search is based on proton-proton collisions events collected at 13 TeV by the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$, recorded in 2016. The search considers the case where the resonance has high transverse momentum due to initial-state radiation of a photon. To study this process, the decay products of the resonance are reconstructed as a single large-radius jet with two-pronged substructure. The signal is identified as a localized excess in the jet invariant mass spectrum. No evidence for such a resonance is observed in the mass range 10 to 125 GeV. Upper limits at the 95% confidence level are set on the coupling strength of vector resonances decaying to quark pairs. The results obtained with this novel technique provide the first direct constraints on quark-antiquark resonance masses below 50 GeV obtained at a hadron collider.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {5}
}