We report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150-950GeV/c2 using 1.3fb-1 of pp̄ collision data at s=1.96TeV collected by the CDF II detector at Fermilab. No significant evidence of such a resonance is observed and we interpret the results to exclude the standard-model-like Z′ with a mass below 923GeV/c2 and the Randall-Sundrum graviton with a mass below 807GeV/c2 for k/M̄pl=0.1, both at the 95% confidence level. Combining with diphoton data excludes the Randall-Sundrum graviton for masses below 889GeV/c2 for k/M̄pl=0.1
L.Brigliadori, A.Castro, M.Deninno, P.Mazzanti, N.Moggi, M.Mussini, et al. (2007). Search for New Physics in High Mass Electron-Positron Events in p anti-p Collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW LETTERS, 99(17), 1-7 [10.1103/PhysRevLett.99.171802].
Search for New Physics in High Mass Electron-Positron Events in p anti-p Collisions at s**(1/2) = 1.96 TeV
BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO;
2007
Abstract
We report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150-950GeV/c2 using 1.3fb-1 of pp̄ collision data at s=1.96TeV collected by the CDF II detector at Fermilab. No significant evidence of such a resonance is observed and we interpret the results to exclude the standard-model-like Z′ with a mass below 923GeV/c2 and the Randall-Sundrum graviton with a mass below 807GeV/c2 for k/M̄pl=0.1, both at the 95% confidence level. Combining with diphoton data excludes the Randall-Sundrum graviton for masses below 889GeV/c2 for k/M̄pl=0.1I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
