0000000000395201

AUTHOR

J.a. Tyapkin

showing 1 related works from this author

Observation of orbitally excited B mesons

1995

Experimental evidence for the existence of orbitally excited B meson states is presented in an analysis of the Bπ and B*π distribution of Q = m(B**) - m(B(*)) - m(π) using Z0decay data taken with the DELPHI detector at LEP. The mean Q-value of the decays B**→ B(*)π is measured to be 284 ± 5 (stat.) ± 15 (syst.) MeV/c2, and the Gaussian width of the signal is 79 ± 5 (stat.) ± 8 (syst.) MeV/c2. This signal can be described as a single resonance of mass m = 5732 ± 5 (stat.) ± 20 (syst.) MeV/c2and full width Γ = 145 ± 28 MeV/c2. The observed shape is also consistent with the production of several broad and narrow states as predicted by the quark model and partly observed in the D-…

Nuclear and High Energy PhysicsE+E ANNIHILATIONLUND MONTE-CARLOElectron–positron annihilationDELPHI; B meson; fragmentation; b-jetB meson01 natural sciencesResonance (particle physics)Full widthPartícules (Física nuclear)JET FRAGMENTATIONDECAYSNuclear physicsPHYSICSfragmentation0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]B meson010306 general physicsNuclear ExperimentDetectors de radiacióDELPHIPhysics010308 nuclear & particles physicsQuark modelb-jetLARGE ELECTRON POSITRON COLLIDERExcited statePARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIPARTICLE PHYSICSHigh Energy Physics::ExperimentLUND MONTE-CARLO; JET FRAGMENTATION; E+E ANNIHILATION; DECAYS; PHYSICSParticle Physics - ExperimentProduction ratePhysics Letters B
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