Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at root s=13 TeV
- Title
- Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at root s=13 TeV
- Author
- 김태정
- Issue Date
- 2019-12
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 123, no. 23, article no. 231803
- 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
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.231803https://repository.hanyang.ac.kr/handle/20.500.11754/158124
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.123.231803
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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