0000000000543137

AUTHOR

Francesco Adalberto Bianchi

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First evidence for a charm radial excitation, D

1998

Using D*+ mesons exclusively reconstructed in the DELPHI detector at LEP, an excess of 66 +/- 14(stat.) events is observed in the D(*+)pi(+)pi(-) final state with a mass of 2637 +/- 2(stat.) +/- 6(syst.) MeV/c(2) and a full width smaller than 15 MeV/c(2) (95% C.L.). This signal is compatible with the expected decay of a radially excited D*' (J(P) = 1(-))meson. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

Nuclear and High Energy PhysicsParticle physicsMesonLUND MONTE-CARLOSYMMETRYElectron–positron annihilationNuclear TheoryHEAVY-QUARK01 natural sciencesJET FRAGMENTATIONPartícules (Física nuclear)Full widthNuclear physics0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Charm (quantum number)Nuclear Experiment010306 general physicsSpectroscopyPRODUCTION-RATESDELPHIPhysicsSPECTROSCOPYE+E-PHYSICS010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyDELPHI DETECTORLARGE ELECTRON POSITRON COLLIDERMESONSLUND MONTE-CARLO; HEAVY-QUARK; JET FRAGMENTATION; PRODUCTION-RATES; DELPHI DETECTOR; E+E-PHYSICS; MESONS; SPECTROSCOPY; SYMMETRY; LIGHTLIGHTExcited statePARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIPARTICLE PHYSICSFísica nuclearHigh Energy Physics::ExperimentParticle Physics - ExperimentExcitation
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