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001-es BibID:	BIBFORM122178
035-os BibID:	(WoS)000500732100009 (Scopus)85076638339
Első szerző:	Sirunyan, A. M. (fizikus)
Cím:	Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at root{s} = 13 TeV / A. M. Sirunyan, CMS Collaboration
Dátum:	2019
ISSN:	0031-9007
Megjegyzések:	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.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physical Review Letters. - 123 : 23 (2019), p. 1-17. -
További szerzők:	Bartók Márton (fizikus) Karancsi János (1987-) (fizikus) Raics Péter (1944-) (fizikus) Teyssier, Daniel Francois Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus) CMS Collaboration
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