Search for low-mass quark-antiquark resonances produced in association with a photon at √ s = 13 TeV
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2020-01-14T04:15:48Z | pt_BR |
dc.date.issued | 2019 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/204143 | pt_BR |
dc.description.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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 123, no. 23 (Dec. 2019), 231803, 17 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Quarks | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.title | Search for low-mass quark-antiquark resonances produced in association with a photon at √ s = 13 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001109567 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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