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Title: | Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s = 13 TeV |
Authors: | CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEGDE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. RASTOGI, A. SHARMA, SEEMA et al. Dept. of Physics |
Keywords: | Physics TOC-DEC-2019 2019 |
Issue Date: | Dec-2019 |
Publisher: | American Physical Society |
Citation: | Physical Review Letters, 123(23). |
Abstract: | 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. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/4257 https://doi.org/10.1103/PhysRevLett.123.231803 |
ISSN: | 0031-9007 1079-7114 |
Appears in Collections: | JOURNAL ARTICLES |
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