Search results for "PACS: 14.80.Da"

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Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Y(1S)

2013

We search for a low-mass scalar CP-odd Higgs boson, A(0), produced in the radiative decay of the upsilon resonance and decaying into a tau(+)tau(-) pair: Y(1S) -> gamma A(0). The production of Y(1S) mesons is tagged by Y(2S) -> pi(+)pi(-) Y(1S) transitions, using a sample of (98.3 +/- 0.9) x 10(6) Y(2S) mesons collected by the BABAR detector. We find no evidence for a Higgs boson in the mass range 3: 5 <= m(A)0 <= 9: 2 GeV, and combine these results with our previous search for the tau decays of the light Higgs in radiative Y(3S) decays, setting limits on the coupling of A(0) to the b (b) over bar quarks in the range 0.09-1.9. Our measurements improve the constraints on the parameters of th…

QuarkParticle physicsNuclear and High Energy PhysicsMesonElectron–positron annihilationScalar (mathematics)FOS: Physical sciencesQuarkoniumPhoton energy01 natural sciencesSupersymmetric modelStandard ModelHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsPhysicsHiggs bosons010308 nuclear & particles physicsPACS: 14.80.Da 12.60.Fr 12.60.Jv 13.20.GdHigh Energy Physics::PhenomenologyParticle physicsBABAR detectorExtensions of electroweak Higgs sectorQuarkoniumHEPExtensions of electroweak Higgs sector; Supersymmetric models; Decays of J/psi Upsilon and other quarkoniaSupersymmetric modelsDecays of J/psi Upsilon and other quarkoniaBosons de HiggsBaBarHiggs bosonLeptonic decaysFísica nuclearHigh Energy Physics::ExperimentFísica de partículesExperiments
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