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题名: Regge signatures from CLAS lambda(1520) photoproduction data at forward angles
作者: Wang, E ;  Xie, JJ ;  Nieves, J
刊名: PHYSICAL REVIEW C
出版日期: 2014
卷号: 90, 期号:6
关键词: BARYON RESONANCES ;  PARTICLE ;  STATES
学科分类: Physics
DOI: 10.1103/PhysRevC.90.065203
通讯作者: Wang, E (reprint author), Univ Valencia, Ctr Mixto CSIC, Inst Fis Corpuscular IFIC, Inst Invest Paterna, Apartado 22085, E-46071 Valencia, Spain.
部门归属: [Wang, En
英文摘要: The gamma p -> K(+)A(1520) reaction mechanism is investigated within a Regge-effective Lagrangian hybrid approach based on our previous study of this reaction [Phys. Rev. C 89, 015203 (2014)]. Near threshold and for large K+ angles, the data from both the Continuous Electron Beam Accelerator Facility large acceptance spectrometer (CLAS) and the laser electron photon beamline at SPring-8 (LEPS) can be successfully described by considering the contributions from the contact, t-channel (K) over bar exchange, u-channel A(1115) hyperon pole, and s-channel nucleon pole and N*(2120) resonance contributions. However, for higher energies and forward K+ angles, systematic discrepancies with data appear, which hint at the possible existence of sizable quark-gluon string mechanism effects. We show how the inclusion of a (K) over bar -Regge-trajectory exchange in the t channel leads to an efficient description of the A(1520) photoproduction channel over the whole energy and angular ranges accessible in the CLAS experiment.
资助者: DGI; FEDER [FIS2011-28853-C02-01, FIS2011-28853-C02-02]; Spanish Ingenio-Consolider Program CPAN [C5D2007-00042]; Generalitat Valenciana [PROMETE01200910090]; National Natural Science Foundation of China [11105126]; European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter under the Seventh Framework Programme of the E.U [283286]
收录类别: SCI
原文出处: 查看原文
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15548
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Wang, E,Xie, JJ,Nieves, J. Regge signatures from CLAS lambda(1520) photoproduction data at forward angles[J]. PHYSICAL REVIEW C,2014,90(6).
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