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Wang, XY; He, J2,3,4; Haberzettl, H5,6
Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target
Source PublicationPHYSICAL REVIEW C
Language英语
KeywordPION
AbstractBased on recent experimental data obtained by the CLAS Collaboration, the Sigma(1385) photoproduction off a neutron target at laboratory photon energies E-gamma up to 2.5 GeV is investigated in an effective Lagrangian approach including s-, u-, and t-channel Born-term contributions. The present calculation does not take into account any explicit s-channel baryon-resonance contributions; however, in the spirit of duality, we include t-channel exchanges of mesonic Regge trajectories. The onset of the Regge regime is controlled by smoothly interpolating between Feynman-type single-meson exchanges and full-fledged Regge-trajectory exchanges. Gauge invariance broken by the Regge treatment is fully restored by introducing contact-type interaction currents that result from the implementation of local gauge invariance in terms of generalized Ward-Takahashi identities. The cross sections for the gamma n -> K (+) Sigma*(1385)(-) reaction are calculated and compared with experimental results from the CLAS and LEPS collaborations. Despite its simplicity, the present theoretical approach provides a good description of the main features of the data. However, the parameters fitted to the data show that the gauge-invariance-restoring contact term plays a large role, which may point to large contributions from final-state interactions.
2016
Volume93Issue:4Pages:45204
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1103/PhysRevC.93.045204
Indexed BySCI
Funding OrganizationMajor State Basic Research Development Program in China [2014CB845405] ; National Natural Science Foundation of China [11275235]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23035
Collection理论物理所科研产出_SCI论文
Affiliation1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
4.Lanzhou Univ, Lanzhou 730000, Peoples R China
5.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
6.George Washington Univ, Inst Nucl Studies, Washington, DC 20052 USA
7.George Washington Univ, Dept Phys, Washington, DC 20052 USA
Recommended Citation
GB/T 7714
Wang, XY,He, J,Haberzettl, H. Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target[J]. PHYSICAL REVIEW C,2016,93(4):45204.
APA Wang, XY,He, J,&Haberzettl, H.(2016).Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target.PHYSICAL REVIEW C,93(4),45204.
MLA Wang, XY,et al."Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target".PHYSICAL REVIEW C 93.4(2016):45204.
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