Photoproduction of f0 (980) and f0 (1500) resonances off a proton target

被引：4
作者：
Xing, Hanyang [1 ,2 ]
An, Chun-Sheng [1 ]
Xie, Ju-Jun [2 ]
Li, Gang [3 ]
机构：
[1] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
[3] Qufu Normal Univ, Sch Phys & Engn, Qufu 273165, Peoples R China
来源：
PHYSICAL REVIEW D | 2018年 / 98卷 / 09期
基金：
中国国家自然科学基金;
关键词：
A(0)(980); F(0)(980); VIOLATION; DECAYS; PAIRS;
D O I：
10.1103/PhysRevD.98.094007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the gamma p -> pf(0) [f(0)(980) and f(0)(1500)] reaction close to threshold within an effective Lagrangian approach. The production process is described by an s-channel nucleon pole or t-channel p and omega exchange. The K-0 (K) over bar (0) invariant mass distributions of the gamma p -> f(0) (980)p -> K-0 (K) over bar (0 )and gamma p -> f(0)(1500)p -> K-0 (K) over bar (0 )p reactions are investigated, where the two kaons have been separated in the S wave decaying from f(0)(980) and f(0)(1500). It is shown that the s-channel process is favored for the production of f(0)(980), while for the f(0)(1500) production, the experimental measurements can be described quite well by the t-channel process. It is expected that the theoretical results can be tested by further experiments at CLAS.
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页数：7
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