Experimental signature of medium modifications for ρ and ω mesons in the 12 GeV p+A reactions

M. Naruki, Y. Fukao, H. Funahashi, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, K. Miwa, T. Miyashita, T. Murakami, T. Nakura, F. Sakuma, M. Togawa, S. Yamada, Y. Yoshimura, H. En'yo, R. Muto, T. Tabaru, S. Yokkaichi, J. ChibaM. Ieiri, O. Sasaki, M. Sekimoto, K. H. Tanaka, H. Hamagaki, K. Ozawa

研究成果: Article

183 引用 (Scopus)

抜粋

The invariant mass spectra of e+e- pairs produced in 12 GeV proton-induced nuclear reactions are measured at the KEK Proton Synchrotron. On the low-mass side of the ω meson peak, a significant enhancement over the known hadronic sources has been observed. The mass spectra, including the excess, are well reproduced by a model that takes into account the density dependence of the vector meson mass modification, as theoretically predicted.

元の言語English
記事番号092301
ジャーナルPhysical Review Letters
96
発行部数9
DOI
出版物ステータスPublished - 2006 3 20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Naruki, M., Fukao, Y., Funahashi, H., Ishino, M., Kanda, H., Kitaguchi, M., Mihara, S., Miwa, K., Miyashita, T., Murakami, T., Nakura, T., Sakuma, F., Togawa, M., Yamada, S., Yoshimura, Y., En'yo, H., Muto, R., Tabaru, T., Yokkaichi, S., ... Ozawa, K. (2006). Experimental signature of medium modifications for ρ and ω mesons in the 12 GeV p+A reactions. Physical Review Letters, 96(9), [092301]. https://doi.org/10.1103/PhysRevLett.96.092301