A search for excited quarks decaying into the γ+jetγ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7 fb−1 collected by the CMS experiment in proton–proton collisions at View the MathML sources=8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jetγ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.

Search for excited quarks in the gamma+jet final state in proton-proton collisions at sqrt(s) = 8 TeV

CANDELISE, VIERI;DELLA RICCA, GIUSEPPE;LA LICATA, CHIARA;MARONE, MATTEO;MONTANINO, DAMIANA;SCHIZZI, ANDREA;UMER, TOMO;
2014

Abstract

A search for excited quarks decaying into the γ+jetγ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7 fb−1 collected by the CMS experiment in proton–proton collisions at View the MathML sources=8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jetγ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.
http://www.sciencedirect.com/science/article/pii/S0370269314007060
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0370269314007060-main.pdf

accesso aperto

Tipologia: Documento in Versione Editoriale
Licenza: Creative commons
Dimensione 585.51 kB
Formato Adobe PDF
585.51 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2788324
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 28
social impact