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Observation of a narrow meson state decaying to D-s(+)pi(0) at a mass of 2.32 GeV/c(2)

Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; ... BABAR Collaboration, ; + view all (2003) Observation of a narrow meson state decaying to D-s(+)pi(0) at a mass of 2.32 GeV/c(2). PHYS REV LETT , 90 (24) , Article 242001. 10.1103/PhysRevLett.90.242001. Green open access

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Abstract

We have observed a narrow state near 2.32 GeV/c(2) in the inclusive D(s)(+)pi(0) invariant mass distribution from 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 J(P)=0(+) assignment. The data sample corresponds to an integrated luminosity of 91 fb(-1) recorded by the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) storage ring.

Type: Article
Title: Observation of a narrow meson state decaying to D-s(+)pi(0) at a mass of 2.32 GeV/c(2)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.90.242001
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.90.242001
Language: English
Additional information: © 2003 The American Physical Society
Keywords: HEAVY-QUARK, SPECTROSCOPY, ANNIHILATION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303628
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