# Observation of a narrow meson decaying to $D^+_s\pi^0$ at a mass of 2.32 GeV/c$^2$

Abstract : We 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00013893
Contributor : Hélène Kerec <>
Submitted on : Friday, July 25, 2003 - 1:50:55 PM
Last modification on : Wednesday, January 6, 2021 - 6:22:02 PM

### Citation

B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Observation of a narrow meson decaying to $D^+_s\pi^0$ at a mass of 2.32 GeV/c$^2$. Physical Review Letters, American Physical Society, 2003, 90, pp.242001. ⟨in2p3-00013893⟩

Record views