A search for low mass narrow vector resonances decaying intoquark-antiquark pairs is presented. The analysis is based on datacollected in 2017 with the CMS detector at the LHC in proton-protoncollisions at a center-of-mass energy of 13 TeV, corresponding to anintegrated luminosity of 41.1 fb(-1). The results of this analysis arecombined with those of an earlier analysis based on data collected atthe same collision energy in 2016, corresponding to 35.9 fb(-1). Signalcandidates will be recoiling against initial state radiation and areidentified as energetic, large-radius jets with two prongedsubstructure. The invariant jet mass spectrum is probed for a potentialnarrow peaking signal over a smoothly falling background. No evidencefor such resonances is observed within the mass range of 50-450 GeV.Upper limits at the 95% confidence level are set on the coupling ofnarrow resonances to quarks, as a function of the resonance mass. Formasses between 50 and 300 GeV these are the most sensitive limits todate. This analysis extends the earlier search to a mass range of300-450 GeV, which is probed for the first time with jet substructuretechniques.
Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at root s=13 Tev
Albergo, S.;Costa, S.;Potenza, R.;Tricomi, A.;Tuve, C.;
2019-01-01
Abstract
A search for low mass narrow vector resonances decaying intoquark-antiquark pairs is presented. The analysis is based on datacollected in 2017 with the CMS detector at the LHC in proton-protoncollisions at a center-of-mass energy of 13 TeV, corresponding to anintegrated luminosity of 41.1 fb(-1). The results of this analysis arecombined with those of an earlier analysis based on data collected atthe same collision energy in 2016, corresponding to 35.9 fb(-1). Signalcandidates will be recoiling against initial state radiation and areidentified as energetic, large-radius jets with two prongedsubstructure. The invariant jet mass spectrum is probed for a potentialnarrow peaking signal over a smoothly falling background. No evidencefor such resonances is observed within the mass range of 50-450 GeV.Upper limits at the 95% confidence level are set on the coupling ofnarrow resonances to quarks, as a function of the resonance mass. Formasses between 50 and 300 GeV these are the most sensitive limits todate. This analysis extends the earlier search to a mass range of300-450 GeV, which is probed for the first time with jet substructuretechniques.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
