Search results for " hadrons"

showing 10 items of 417 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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"Table 3" of "The scale dependence of the hadron multiplicity in quark and gluon jets and a precise determination of C(A)/C(F)."

1999

Twice the difference of the multiplicity in three jet events and in qqbar events of comparable scale 2(N_3jet-N_qqbar). The three-jet event multiplicity isequal to the data of Fig. 3c), the qqbar-multiplicity is taken from a fit of th e e+e- data corrected for the varying b-quark contribution. This multiplicity can be identified with the multiplicity of a hypothetical gluon-gluon event. Thereis a normalization uncertainty (i.e. a scale independent constant) of the gluon -gluon event multiplicity which should not influence the slope of the gg-multiplicity with scale (see paper). The errors shown are statistical only.

High Energy Physics::LatticeE+ E- --> 2JET GAMMAE+ E- --> HADRONSE+ E- --> Z0High Energy Physics::PhenomenologyE+ E- --> CHARGED XJet ProductionMULTInclusiveDijet ProductionE+ E- --> 3JETE+ E- ScatteringExclusive0.216High Energy Physics::Experiment
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"Table 2" of "Energy-energy correlations in hadronic final states from Z0 decays"

1991

Values of LAMBDA-MSBAR(5) and ALPHA-S(91 GeV) deduced from the EEC measurements. The second systematic error is from the theory.

High Energy Physics::LatticeE+ E- --> HADRONSE+ E- --> Z0E+ E- ScatteringALPHASExclusiveHigh Energy Physics::ExperimentNuclear ExperimentLAMQCD91.0
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"Table 5" of "Consistent measurements of alpha(s) from precise oriented event shape distributions."

2000

Jet Cone Energy Fraction.

InclusiveAstrophysics::High Energy Astrophysical PhenomenaE+ E- --> HADRONSE+ E- --> JETSE+ E- --> Z0E+ E- ScatteringJCEFExclusiveHigh Energy Physics::ExperimentE+ E- --> CHARGED X91.2Jet Production
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"Table 29" of "Consistent measurements of alpha(s) from precise oriented event shape distributions."

2000

Jet Cone Energy Fraction.

InclusiveAstrophysics::High Energy Astrophysical PhenomenaE+ E- --> HADRONSE+ E- --> JETSE+ E- --> Z0E+ E- ScatteringJCEFExclusiveHigh Energy Physics::ExperimentE+ E- --> CHARGED X91.2Jet Production
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"Table 32" of "Consistent measurements of alpha(s) from precise oriented event shape distributions."

2000

Jet Cone Energy Fraction.

InclusiveAstrophysics::High Energy Astrophysical PhenomenaE+ E- --> HADRONSE+ E- --> JETSE+ E- --> Z0E+ E- ScatteringJCEFExclusiveHigh Energy Physics::ExperimentE+ E- --> CHARGED X91.2Jet Production
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"Table 31" of "Consistent measurements of alpha(s) from precise oriented event shape distributions."

2000

Jet Cone Energy Fraction.

InclusiveAstrophysics::High Energy Astrophysical PhenomenaE+ E- --> HADRONSE+ E- --> JETSE+ E- --> Z0E+ E- ScatteringJCEFExclusiveHigh Energy Physics::ExperimentE+ E- --> CHARGED X91.2Jet Production
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"Table 30" of "Consistent measurements of alpha(s) from precise oriented event shape distributions."

2000

Jet Cone Energy Fraction.

InclusiveAstrophysics::High Energy Astrophysical PhenomenaE+ E- --> HADRONSE+ E- --> JETSE+ E- --> Z0E+ E- ScatteringJCEFExclusiveHigh Energy Physics::ExperimentE+ E- --> CHARGED X91.2Jet Production
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"Table 16" of "Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons"

2019

ASYMUU(COS(2*PHI(HADRON))) 3d asymmetries for positive and negative hadrons in the third XB bin. The errors are statistical and systematic.

InclusiveAsymmetry MeasurementNuclear TheoryHigh Energy Physics::PhenomenologyNeutral CurrentDeep Inelastic ScatteringHigh Energy Physics::ExperimentMU+ LI6DEUT --> MU+ HADRONS XNuclear ExperimentMuon productionASYM
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"Table 8" of "Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons"

2019

ASYMUU(COS(2*PHI(HADRON))) asymmetries for positive and negative hadrons as a function of Z. The errors are statistical only.

InclusiveAsymmetry MeasurementNuclear TheoryHigh Energy Physics::PhenomenologyNeutral CurrentDeep Inelastic ScatteringHigh Energy Physics::ExperimentMU+ LI6DEUT --> MU+ HADRONS XNuclear ExperimentMuon productionASYM
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