Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2

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dc.creatorthe BABAR Collaboration
dc.creatorAubert, B.
dc.date2003-04-12
dc.date.accessioned2026-07-07T12:01:57Z
dc.date.available2026-07-07T12:01:57Z
dc.descriptionWe have observed a narrow state near 2.32 GeV/c^2 in the inclusive Ds+ pi0 invariant mass distributionfrom e+e- annihilation data at energies near 10.6 GeV. The observed width is consistent with the experimental resolution. The small intrinsic width and the quantum numbers of the final state indicate that the decay violates isospin conservation. The state has natural spin-parity and the low mass suggests a JP=0+ assignment. The data sample corresponds to an integrated luminosity of 91 fb-1 recorded by the BABAR detector at the PEP2 asymmetric-energy e+e- storage ring.
dc.description7 pages, 3 figures, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ex/0304021
dc.identifierhttp://arxiv.org/abs/hep-ex/0304021
dc.identifierPhys.Rev.Lett.90:242001,2003
dc.identifierdoi:10.1103/PhysRevLett.90.242001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207273
dc.subjectHigh Energy Physics - Experiment
dc.titleObservation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
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