Case in favor of the N*(1700)(3/2(-)) | |
Garzon, EJ ; Xie, JJ ; Oset, E | |
刊名 | PHYSICAL REVIEW C |
2013 | |
卷号 | 87期号:5页码:55204 |
关键词 | HIDDEN LOCAL SYMMETRY PARTIAL-WAVE ANALYSIS PI-N ISOBAR-MODEL GAUGE BOSON RESONANCES AMPLITUDES ELECTROPRODUCTION TRANSITION DYNAMICS |
ISSN号 | 0556-2813 |
通讯作者 | Garzon, EJ (reprint author), Univ Valencia, CSIC, Inst Invest Paterna, Ctr Mixto,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain. |
英文摘要 | Using an interaction extracted from the local hidden-gauge Lagrangians, which brings together vector and pseudoscalar mesons, and the coupled channels rho N (s wave), pi N (d wave), pi Delta (s wave), and pi Delta (d wave), we look in the region ofv root s = 1400-1850 MeV and find two resonances dynamically generated by the interaction of these channels, which are naturally associated to N*(1520)(3/2(-)) and N*(1700)(3/2(-)). N*(1700)(3/2(-)) appears neatly as a pole in the complex plane. The free parameters of the theory are chosen to fit the pi N (d-wave) data. Both the real and imaginary parts of the pi N amplitude vanish in our approach in the vicinity of this resonance, which is similar to what happens in experimental determinations and which makes this signal very weak in this channel. This feature could explain why this resonance does not show up in some experimental analyses, but the situation is analogous to that of the f(0)(980) resonance, the second scalar meson after sigma[f(0)(500)] in the pi pi(d-wave) amplitude. The unitary coupled channel approach followed here, in connectionwith the experimental data, leads automatically to a pole in the 1700-MeV region and makes this second 3/2-resonance unavoidable. |
学科主题 | Physics |
收录类别 | SCI |
资助信息 | Spanish Ministerio de Economia y Competitividad; Generalitat Valenciana in the program Prometeo; European Community Research Infrastructure Integrating Activity Study of Strongly Interacting Matter [283286]; EU |
原文出处 | http://dx.doi.org/10.1103/PhysRevC.87.055204 |
语种 | 英语 |
WOS记录号 | WOS:000319058200003 |
公开日期 | 2014-04-25 |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/15364] |
专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
推荐引用方式 GB/T 7714 | Garzon, EJ,Xie, JJ,Oset, E. Case in favor of the N*(1700)(3/2(-))[J]. PHYSICAL REVIEW C,2013,87(5):55204. |
APA | Garzon, EJ,Xie, JJ,&Oset, E.(2013).Case in favor of the N*(1700)(3/2(-)).PHYSICAL REVIEW C,87(5),55204. |
MLA | Garzon, EJ,et al."Case in favor of the N*(1700)(3/2(-))".PHYSICAL REVIEW C 87.5(2013):55204. |
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