Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s=13 TeV (CROSBI ID 273204)
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Podaci o odgovornosti
Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ceci, Saša ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kadija, Krešo ; Kovač, Marko ; Lelas, Damir ; Luetić, Jelena ; Mesić, Benjamin ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Woods, Nathaniel
CMS Collaboration
engleski
Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at √s=13 TeV
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.
High energy physics ; Experimental particle physics ; LHC ; CMS ; Particle Physics Experiments ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Higgs physics ; Beyond Standard Model ; Photon production ; Elementary Particles and Fields ; B physics ; Exotica ; Long-lived particles ; Top physics ; B2G ; Diboson ; Dilepton ; HVT ; Graviton ; Standard model physics ; Higgs boson ; Z boson ; Rare decays
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Podaci o izdanju
123 (23)
2019.
231803
17
objavljeno
0031-9007
1079-7114
10.1103/PhysRevLett.123.231803
Povezanost rada
Fizika