0000000000850755

AUTHOR

M. Besanãon

showing 2 related works from this author

Search for Decay of a Fermiophobic Higgs Bosonhf→γγwith the D0 Detector ats=1.96  TeV

2008

We report the results of a search for a narrow resonance decaying into two photons in 1.1 fb(-1) of data collected by the D0 experiment at the Fermilab Tevatron Collider during the period 2002-2006. We find no evidence for such a resonance and set a lower limit on the mass of a fermiophobic Higgs boson of m(hf) > 100 GeV at the 95% C.L. This exclusion limit exceeds those obtained in previous searches at the Fermilab Tevatron and covers a significant region of the parameter space B(h(f) -> gamma gamma) vs m(hf) which was not accessible at the CERN Large Electron-Positron Collider.

PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsTevatronGeneral Physics and AstronomyResonanceD0 experiment01 natural sciences7. Clean energylaw.inventionNuclear physicslaw0103 physical sciencesHiggs bosonPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentFermilab010306 general physicsColliderBosonPhysical Review Letters
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Properties ofL=1B1andB2*Mesons

2007

This Letter presents the first strong evidence for the resolution of the excited B mesons B-1 and B-2(*) as two separate states in fully reconstructed decays to B+(*())pi(-). The mass of B-1 is measured to be 5720.6 +/- 2.4 +/- 1.4 MeV/c(2) and the mass difference Delta M between B-2* and B-1 is 26.2 +/- 3.1 +/- 0: 9 MeV/c(2), giving the mass of the B-2* as 5746.8 +/- 2.4 +/- 1.7 MeV/c(2). The production rate for B-1 and B-2* mesons is determined to be a fraction (13.9 +/- 1.9 +/- 3.2)% of the production rate of the B+ meson.

PhysicsParticle propertiesMeson010308 nuclear & particles physicsHadronAnalytical chemistryGeneral Physics and AstronomyElementary particle01 natural sciencesExcited state0103 physical sciencesB mesonAtomic physics010306 general physicsProduction rateBosonPhysical Review Letters
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