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.

Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Observation of a narrow meson state decaying to Ds + π0 at a mass of 2.32 GeV/c2. PHYSICAL REVIEW LETTERS, 90(24), 1-7 [10.1103/PhysRevLett.90.242001].

Observation of a narrow meson state decaying to Ds + π0 at a mass of 2.32 GeV/c2

CARPINELLI, Massimo;
2003

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.
Articolo in rivista - Articolo scientifico
Calculations; Computer simulation; Electron resonance; Light emission; Luminescence; Photons; Quantum theory; Spectroscopic analysis; Annihilation data; Decaying; Invariant mass distribution; Isospin conservation; Luminosity; Meson state; Quantum numbers; Electron energy levels;
English
2003
90
24
1
7
242001
none
Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Observation of a narrow meson state decaying to Ds + π0 at a mass of 2.32 GeV/c2. PHYSICAL REVIEW LETTERS, 90(24), 1-7 [10.1103/PhysRevLett.90.242001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389998
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