Published March 10, 2006
| Version v1
Journal article
Experimental Signature of Medium Modifications for ρ and ω Mesons in the 12 GeV p+A Reactions
Creators
- Naruki, M.1, 2, 3, 4
- Fukao, Y.1, 2, 3, 4
- Funahashi, H.1, 2, 3, 4
- Ishino, M.1, 2, 3, 4
- Kanda, H.1, 2, 3, 4
- Kitaguchi, M.1, 2, 3, 4
- Mihara, S.1, 2, 3, 4
- Miwa, K.1, 2, 3, 4
- Miyashita, T.1, 2, 3, 4
- Murakami, T.1, 2, 3, 4
- Nakura, T.1, 2, 3, 4
- Sakuma, F.1, 2, 3, 4
- Togawa, M.1, 2, 3, 4
- Yamada, S.1, 2, 3, 4
- Yoshimura, Y.1, 2, 3, 4
- En'yo, H.1, 2, 3, 4
- Muto, R.1, 2, 3, 4
- Tabaru, T.1, 2, 3, 4
- Yokkaichi, S.1, 2, 3, 4
- Chiba, J.1, 2, 3, 4
- and others
- 1. Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033 (Japan)
- 2. Institute of Particle and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)
- 3. RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
- 4. Department of Physics, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502 (Japan)
Description
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
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.96.092301;
- arXiv
- arXiv:nucl-ex/0504016v4;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 96
- Journal Issue
- 9
- Journal Page Range
- p. 092301-092301.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37083063
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ELECTRONS; GEV RANGE 10-100; MASS; MASS SPECTRA; NUCLEAR REACTIONS; OMEGA-782 MESONS; PAIR PRODUCTION; POSITRONS; PROTON-NUCLEON INTERACTIONS; PROTONS; RHO-770 MESONS; SYNCHROTRONS
- Descriptors DEC
- ACCELERATORS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LEPTONS; MATTER; MESONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; SPECTRA; VECTOR MESONS
Optional Information
- Notes
- (c) 2006 The American Physical Society