title: Near-threshold photoproduction of Lambda(1520) from protons and deuterons.
abstract: Photoproduction of Lambda(1520) with liquid hydrogen and deuterium targets was examined at photon energies below 2.4 GeV in the SPring-8 LEPS experiment. For the first time, the differential cross sections were measured at low energies and with a deuterium target. A large asymmetry of the production cross sections from protons and neutrons was observed at backward K+/0 angles. This suggests the importance of the contact term, which coexists with t-channel K exchange under gauge invariance. This interpretation was compatible with the differential cross sections, decay asymmetry, and photon beam asymmetry measured in the production from protons at forward K+ angles.
authors: Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
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authors: Muramatsu
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authors: Chen
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authors: Chang
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authors: Akimune
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authors: Asano
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authors: Kato
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authors: Kino
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authors: Kumagai
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authors: Matsuda
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authors: Yonehara
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authors: Zegers