Search results for "Leptonic semileptonic and radiative decays of bottom mesons"

showing 3 items of 3 documents

Precision measurement of D meson mass differences

2013

Using three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D-0 mass. The measurements are based on a dataset corresponding to an integrated luminosity of 1.0 fb(-1) collected in pp collisions at 7 TeV. Using the decay D-0 -> K+K-K-pi(+), the D-0 mass is measured to be M(D-0) = 1864.75 +/- 0.15 (stat) +/- 0.11 (syst) MeV/c(2). The mass differences M(D+) - M(D-0) = 4.76 +/- 0.12 (stat) +/- 0.07 (syst) MeV/c(2), M(D-s(+)) - M(D+) = 98.68 +/- 0.03 (stat) +/- 0.04 (syst) MeV/c(2) are measured using the D-0 -> K+K-pi(+)pi(-) and D-(s)(+) -> K+K-pi(+) modes.

Hadronic decays of charmed mesonsParticle physicsTeoria quàntica de campsGravitacióNuclear and High Energy PhysicsMesonHigh Energy Physics::LatticeNuclear TheoryFOS: Physical sciencesHadrons01 natural sciencesHadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadrons; Leptonic semileptonic and radiative decays of bottom mesons; Charmed mesons (|C|>0 B=0); Hadronic decays of charmed mesonsPartícules (Física nuclear)Settore FIS/04 - Fisica Nucleare e SubnucleareLuminosityHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)0103 physical sciencesD mesonLeptonic semileptonic and radiative decays of bottom meson[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]TOOLTeoria quàntica010306 general physicsHadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadronsNuclear ExperimentQCHadron-Hadron Scattering; Nuclear and High Energy PhysicsPhysicsHadron-Hadron Scattering010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyHadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadronRelativity (Physics)DecayRelativitat (Física)Quantum field theoryFIS/01 - FISICA SPERIMENTALEQuantum theoryLeptonic semileptonic and radiative decays of bottom mesonsDECAY; TOOLFísica nuclearHigh Energy Physics::ExperimentCharmed mesons (|C|>0 B=0)DECAYParticle Physics - ExperimentGravitationJournal of High Energy Physics
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Differential branching fraction and angular analysis of the decay $B^{0} \to K^{*0} \mu^{+}\mu^{-}$

2013

The angular distribution and differential branching fraction of the decay B-0 -> K*(0)mu(+)mu(-) are studied using a data sample, collected by the LHCb experiment in pp collisions at root s = 7 TeV, corresponding to an integrated luminosity of 1.0 fb(-1). Several angular observables are measured in bins of the dimuon invariant mass squared, q(2). A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q(0)(2) = 4.9 +/- 0.9 GeV2/c(4), where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions.

K-ASTERISK-L(+)L(-)12.15.Mm01 natural sciencesB physicsLuminositydecayHigh Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareNeutral currentFlavor physics[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Invariant massQCDetectors de radiaciómedia_commonPhysicsB0 mesonHadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadronObservableCP violationFIS/01 - FISICA SPERIMENTALENuclear countersLeptonic semileptonic and radiative decays of bottom mesonsFísica nuclearLHCB physics; Flavor physics; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decayParticle Physics - ExperimentParticle physicsNuclear and High Energy Physicsmedia_common.quotation_subject14.40.NdFlavour Changing Neutral CurrentsHadronsAsymmetryPartícules (Física nuclear)Standard ModelB physics; Flavor physics; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decay; Nuclear and High Energy PhysicsNeutral currentsAngular distributionASYMMETRIES0103 physical sciencesLeptonic semileptonic and radiative decays of bottom mesonLHC flavour physics010306 general physicsHadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadronsB0 meson; decay; LHCb; LHCHadron-Hadron Scattering010308 nuclear & particles physicsBranching fractionCromodinàmica quànticaLHCbRare decay13.20.HeBottom mesons (|B|>0); Leptonic semileptonic and radiative decays of bottom mesons; Hadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadrons; Neutral currents; 14.40.Nd; 13.20.He; 13.85.Ni; 12.15.Mm;Bottom mesons (|B|>0)High Energy Physics::Experiment13.85.NiDifferential (mathematics)FIS/04 - FISICA NUCLEARE E SUBNUCLEAREQuantum chromodynamicsexperimental results
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Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass

2013

The branching fraction of the rare decay B-0 -> K*(0) e(+) e(-) in the dilepton mass region from 30 to 1000 MeV/c(2) has been measured by the LHCb experiment, using pp collision data, corresponding to an integrated luminosity of 1.0 fb(-1), at a centre-of-mass energy of 7 TeV. The decay mode B-0 -> J/psi (e(+) e(-)) K*(0) is utilized as a normalization channel. The branching fraction B(B-0 -> K*(0) e(+) e(-)) is measured to be B(B-0 -> K*(0) e(+) e(-))(30-1000 MeV/c2) = (3.1(-0.8)(-0.3)(+0.9)(+0.2) +/- 0.2) x 10(-7) where the fi rst error is statistical, the second is systematic, and the third comes from the uncertainties on the B-0 -> J/K*(0) and J/psi -> e(+) e(-) branching fractions.

Nuclear and High Energy PhysicsParticle physicsB physicModels beyond the standard modelFlavour Changing Neutral CurrentsFOS: Physical sciencesHadrons01 natural sciencesDECAYSB physicsPartícules (Física nuclear)High Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareNeutral currentHigh Energy Physics - Experiment (hep-ex)Neutral currents0103 physical sciencesLeptonic semileptonic and radiative decays of bottom meson[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]TOOLDECAYS; TOOL010306 general physicsLarge Hadron Collider (France and Switzerland)QCPhysicsFlavour Changing Neutral CurrentHadron-Hadron Scattering010308 nuclear & particles physicsBranching fractionB physics; Branching fraction; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decayHigh Energy Physics::PhenomenologyGran Col·lisionador d'Hadrons3. Good healthCromodinàmica quànticaFIS/01 - FISICA SPERIMENTALERare decayB physics; Branching fraction; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decay; Nuclear and High Energy PhysicsBottom mesons (|B|>0); Leptonic semileptonic and radiative decays of bottom mesons; Neutral currents; Models beyond the standard modelLeptonic semileptonic and radiative decays of bottom mesonsBottom mesons (|B|>0)Branching fractionHigh Energy Physics::ExperimentFísica nuclearDECAYParticle Physics - ExperimentQuantum chromodynamics
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