Modification of the ω-Meson Lifetime in Nuclear Matter

M. Kotulla et al. (CBELSA/TAPS Collaboration)
Phys. Rev. Lett. 100, 192302 – Published 13 May 2008; Erratum Phys. Rev. Lett. 114, 199903 (2015)

Abstract

Information on hadron properties in the nuclear medium has been derived from the photoproduction of ω mesons on the nuclei C, Ca, Nb, and Pb using the Crystal Barrel/TAPS detector at the ELSA tagged photon facility in Bonn. The dependence of the ω-meson cross section on the nuclear mass number has been compared with three different types of models: a Glauber analysis, a Boltzmann-Uehling-Uhlenbeck analysis of the Giessen theory group, and a calculation by the Valencia theory group. In all three cases, the inelastic ω width is found to be 130150MeV/c2 at normal nuclear matter density for an average 3-momentum of 1.1GeV/c. In the rest frame of the ω meson, this inelastic ω width corresponds to a reduction of the ω lifetime by a factor 30. For the first time, the momentum dependent ωN cross section has been extracted from the experiment and is in the range of 70 mb.

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  • Received 10 December 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.192302

©2008 American Physical Society

Erratum

Erratum: Modification of the ω-Meson Lifetime in Nuclear Matter [Phys. Rev. Lett. 100, 192302 (2008)]

M. Kotulla et al. (CBELSA/TAPS Collaboration)
Phys. Rev. Lett. 114, 199903 (2015)

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Vol. 100, Iss. 19 — 16 May 2008

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