Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s = 13 TeV

View/ Open
Issue Date
2019-12-03Author
Sirunyan, A. M.
Murray, Michael Joseph
CMS Collaboration
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© 2019 CERN, for the CMS Collaboration.
Metadata
Show full item recordAbstract
A search for narrow low-mass resonances decaying to quark-antiquark pairs is presented. The search is based on proton-proton collision 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 hard 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 would be 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 resonances decaying to quark pairs. The results obtained with this photon trigger strategy provide the first direct constraints on quark-antiquark resonance masses below 50 GeV obtained at a hadron collider.
Description
This work is licensed under a Creative Commons Attribution 4.0 International License.
Collections
Citation
A. M. Sirunyan et al., "Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s = 13 TeV", Phys. Rev. Lett. 123, 231803, 3 December 2019, American Physical Society, https://doi.org/10.1103/PhysRevLett.123.231803
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.