Near-Threshold {Lambda}(1520) Production by the {gamma}-vectorp{yields}K{sup +{Lambda}}(1520) Reaction at Forward K{sup +} Angles

Journal Article · Fri Apr 30 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.172001· OSTI ID:21410658

Kohri, H; Hasegawa, S; Hosaka, A; Hotta, T; Kino, K; Matsuoka, N; Morita, M; Nakano, T; Shimizu, A ^[1]; Ahn, D S ^[1]; Ahn, J K ^[2]; Akimune, H; Yonehara, K ^[3]; Asano, Y ^[4]; Chang, W C; Oshuev, D S; Wang, C W; Wang, S C ^[5]; Date, S; Kumagai, N ^[6]

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1. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
2. Department of Physics, Pusan National University, Busan 609-735 (Korea, Republic of)
3. Department of Physics, Konan University, Kobe, Hyogo 658-8501 (Japan)
4. Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizu, Kyoto 619-0215 (Japan)
5. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China)
6. Japan Synchrotron Radiation Research Institute, Mikazuki, Hyogo 679-5198 (Japan)

Differential cross sections and photon-beam asymmetries for the {gamma}-vectorp{yields}K{sup +{Lambda}}(1520) reaction have been measured with linearly polarized photon beams at energies from the threshold to 2.4 GeV at 0.6<cos{theta}{sub c.m.}{sup K}<1. A new bump structure was found at W{approx_equal}2.11 GeV in the cross sections. The bump is not well reproduced by theoretical calculations introducing a nucleon resonance with J{<=}(3/2). This result suggests that the bump might be produced by a nucleon resonance possibly with J{>=}(5/2) or by a new reaction process, for example, an interference effect with the {phi} photoproduction having a similar bump structure in the cross sections.

• OSTI ID: 21410658
• Journal Information: Physical Review Letters, Vol. 104, Issue 17; Other Information: DOI: 10.1103/PhysRevLett.104.172001; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DIFFERENTIAL CROSS SECTIONS
GEV RANGE
INTERFERENCE
KAONS PLUS
LAMBDA-1520 BARYONS
NUCLEONS
PHOTON BEAMS
PHOTOPRODUCTION
RESONANCE
VECTORS
BARYONS
BASIC INTERACTIONS
BEAMS
BOSONS
CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HYPERONS
INTERACTIONS
KAONS
LAMBDA BARYONS
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
TENSORS