Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Bergauer, Thomas and Md. Ali, Mohd. Adli (2019) Search for low-mass quark-antiquark resonances produced in association with a photon at root s=13 TeV. Physical Review Letters, 123 (23). pp. 1-17. ISSN 0031-9007 E-ISSN 1079-7114
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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
Item Type: | Article (Journal) |
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Additional Information: | 7861/79433 |
Uncontrolled Keywords: | Low-Mass Quark-Antiquark Resonances; ffiffi s p = 13 TeV |
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 > Department of Physics |
Depositing User: | Dr Mohd Adli MD Ali |
Date Deposited: | 05 Mar 2020 15:36 |
Last Modified: | 05 Mar 2020 15:36 |
URI: | http://irep.iium.edu.my/id/eprint/79433 |
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