Absorption of the $\omega$ and $\phi$ Mesons in Nuclei

Abstract : Due to their long lifetimes, the $\omega$ and $\phi$ mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from $^{2}$H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the $e^{+}e^{-}$ channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.
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Journal articles

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Submitted on : Friday, June 18, 2010 - 8:51:15 AM
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Citation

M.H. Wood, R. Nasseripour, M. Paolone, C. Djalali, D.P. Weygand, et al.. Absorption of the $\omega$ and $\phi$ Mesons in Nuclei. Physical Review Letters, American Physical Society, 2010, 105, pp.112301. ⟨10.1103/PhysRevLett.105.112301⟩. ⟨in2p3-00493111⟩

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