Published January 10, 2008
| Version v1
Journal article
Forward coherent φ-meson photoproduction from deuterons near threshold
Creators
- 1. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China)
- 2. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
- 3. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)
- 4. Department of Physics, Pusan National University, Busan 609-735 (Korea, Republic of)
- 5. Department of Physics, Konan University, Kobe, Hyogo 658-8501 (Japan)
- 6. Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizu, Kyoto 619-0215 (Japan)
- 7. Japan Synchrotron Radiation Research Institute, Mikazuki, Hyogo 679-5198 (Japan)
- 8. Department of Physics and Astrophysics, Nagoya University, Nagoya, Aichi 464-8602 (Japan)
- 9. School of Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)
- 10. Department of Physics and Astronomy, Ohio University, Athens, OH 45701 (United States)
- 11. Laboratory of Nuclear Science, Tohoku University, Sendai, Miyagi 982-0826 (Japan)
Description
Differential cross sections and decay asymmetries for coherent φ-meson photoproduction from deuterons were measured for the first time at forward angles using linearly polarized photons at Eγ=1.5-2.4 GeV. This reaction offers a unique way to directly access natural-parity pomeron dynamics and gluon exchange at low energies. The cross sections at zero degrees increase with increasing photon energy. The decay asymmetries demonstrate a complete dominance of natural-parity exchange processes, showing that isovector unnatural-parity π-meson exchange is small. Nevertheless the deduced cross sections of φ-mesons from nucleons contributed by isoscalar t-channel exchange processes are not well described by the conventional pomeron model
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2007.11.009Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2007.11.009;
- arXiv
- arXiv:nucl-ex/0703034v2;
- PII
- S0370-2693(07)01386-X;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 658
- Journal Issue
- 5
- Journal Page Range
- p. 209-215
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39052070
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASYMMETRY; DEUTERONS; DIFFERENTIAL CROSS SECTIONS; GEV RANGE 01-10; GLUONS; ISOVECTORS; NUCLEONS; PARITY; PARTICLE DECAY; PHOTONS; PHOTOPRODUCTION; PIONS; POMERANCHUK PARTICLES; T CHANNEL
- Descriptors DEC
- BARYONS; BASIC INTERACTIONS; BOSONS; CHARGED PARTICLES; CROSS SECTIONS; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INTERACTIONS; MASSLESS PARTICLES; MESONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUASI PARTICLES; TENSORS; VECTORS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.