Details

Autor(en) / Beteiligte

• Ozawa, K
• En'yo, H
• Funahashi, H
• Kitaguchi, M
• Ishino, M
• Kanda, H
• Mihara, S
• Miyashita, T
• Murakami, T
• Muto, R
• Naruki, M
• Sakuma, F
• Sato, H D
• Tabaru, T
• Yamada, S
• Yokkaichi, S
• Yoshimura, Y
• Chiba, J
• Ieiri, M
• Nomachi, M
• Sasaki, O
• Sekimoto, M
• Tanaka, K H
• Hamagaki, H

Titel

Observation of rho/omega meson modification in nuclear matter

Ist Teil von

• Physical review letters, 2001-05, Vol.86 (22), p.5019-5022

Ort / Verlag

United States

Erscheinungsjahr

2001

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We measured the invariant mass spectra of electron-positron pairs in the target rapidity region of 12-GeV p+A reactions. We have observed a significant difference in the mass spectra below the omega meson between p+C and p+Cu interactions. This difference indicates that the spectral shape of mesons is modified at normal nuclear-matter density.