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arXiv · 1006.3361

Absorption of the $ω$ and $ϕ$ Mesons in Nuclei

M. H. Wood·R. Nasseripour·M. Paolone·C. Djalali·D. P. Weygand·the CLAS Collaboration
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Abstract

Due to their long lifetimes, the $ω$ and $ϕ$ 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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M. H. Wood, R. Nasseripour, M. Paolone, C. Djalali, D. P. Weygand, the CLAS Collaboration. 2010-06-17. Absorption of the $ω$ and $ϕ$ Mesons in Nuclei. https://doi.org/10.1103/physrevlett.105.112301

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