A search for high-mass resonances in the e+e- final state is presented based on 2.5fb-1 of s=1.96TeV pp̄ collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an e+e- invariant mass of 240GeV/c2. The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150-1000GeV/c2 is 0.6% (equivalent to 2.5σ). We exclude the standard model coupling Z′ and the Randall-Sundrum graviton for k/M̄Pl=0.1 with masses below 963 and 848GeV/c2 at the 95% credibility level, respectively. © 2009 The American Physical Society.

Search for high-mass e+e- resonances in pp̄ collisions at s=1.96TeV

Piacentino G.;
2009-01-01

Abstract

A search for high-mass resonances in the e+e- final state is presented based on 2.5fb-1 of s=1.96TeV pp̄ collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an e+e- invariant mass of 240GeV/c2. The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150-1000GeV/c2 is 0.6% (equivalent to 2.5σ). We exclude the standard model coupling Z′ and the Randall-Sundrum graviton for k/M̄Pl=0.1 with masses below 963 and 848GeV/c2 at the 95% credibility level, respectively. © 2009 The American Physical Society.
http://oai.aps.org/oai?verb=GetRecord&Identifier=oai:aps.org:PhysRevLett.102.031801&metadataPrefix=oai_apsmeta_2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11695/88025
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