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Naruki M, Fukao Y, Funahashi H, et al. Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions. Phys Rev Lett. 2006;96(9):092301doi: 10.1103/PhysRevLett.96.092301.
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., Chiba, J., Ieiri, M., Sasaki, O., Sekimoto, M., Tanaka, K. H., Hamagaki, H., & Ozawa, K. (2006). Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions. Physical review letters, 96(9), 092301. https://doi.org/10.1103/PhysRevLett.96.092301
Naruki, M, et al. "Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions." Physical review letters vol. 96,9 (2006): 092301. doi: https://doi.org/10.1103/PhysRevLett.96.092301
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, Chiba J, Ieiri M, Sasaki O, Sekimoto M, Tanaka KH, Hamagaki H, Ozawa K. Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions. Phys Rev Lett. 2006 Mar 10;96(9):092301. doi: 10.1103/PhysRevLett.96.092301. Epub 2006 Mar 10. PMID: 16606257.
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Phys Rev Lett. 2006 Mar 10;96(9):092301. doi: 10.1103/PhysRevLett.96.092301. Epub 2006 Mar 10.

Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions.

Physical review letters

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 Chiba, M Ieiri, O Sasaki, M Sekimoto, K H Tanaka, H Hamagaki, K Ozawa

Affiliations

  1. Department of Physics, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan. [email protected]

PMID: 16606257 DOI: 10.1103/PhysRevLett.96.092301

Abstract

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 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.

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