a(1)(1420) peak as the pi f(0)(980) decay mode of the a(1)(1260)
文献类型：期刊论文
| 作者 | Aceti, F.1,2; Dai, L. R.1,2,3; Oset, E.1,2,4 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2016-11-30 |
| 卷号 | 94页码:9 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.94.096015 |
| 英文摘要 | We study the decay mode of the a(1)(1260) into a pi(+) in p wave and the f(0)(980) that decays into pi(+)pi(-) in s wave. The mechanism proceeds via a triangular mechanism where the a(1)(1260) decays into K*K-, the K* decays to an external pi(+) and an internal K that fuses with the (K) over bar producing the f(0)(980) resonance. The mechanism develops a singularity at a mass of the a(1)(1260) around 1420 MeV, producing a peak in the cross section of the pp reaction, used to generate the mesonic final state, which provides a natural explanation of all the features observed in the COMPASS experiment, where a peak observed at this energy is tentatively associated to a new resonance called a(1)(1420). On the other hand, the triangular singularity studied here gives rise to a remarkable feature, where a peak is seen for a certain decay channel of a resonance at an energy about 200 MeV higher than its nominal mass. |
| WOS关键词 | HIDDEN LOCAL SYMMETRY ; GAUGE BOSON ; MESON |
| 资助项目 | Spanish Ministerio de Economia y Competitividad ; European FEDER funds[FIS2011-28853-C02-01] ; Generalitat Valenciana[2014/068] ; Spanish Excellence Network on Hadronic Physics[FIS2014-57026-REDT] ; National Natural Science Foundation of China[11575076] ; National Natural Science Foundation of China[11375080] ; Program for Liaoning Excellent Talents in University[LR2015032] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000388824300007 |
| 资助机构 | Spanish Ministerio de Economia y Competitividad ; European FEDER funds ; Generalitat Valenciana ; Spanish Excellence Network on Hadronic Physics ; National Natural Science Foundation of China ; Program for Liaoning Excellent Talents in University |
| 源URL | [http://119.78.100.186/handle/113462/44108]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Aceti, F. |
| 作者单位 | 1.Univ Valencia, Dept Fis Teor, CSIC, Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain 2.Univ Valencia, IFIC, Ctr Mixto, CSIC,Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain 3.Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Aceti, F.,Dai, L. R.,Oset, E.. a(1)(1420) peak as the pi f(0)(980) decay mode of the a(1)(1260)[J]. PHYSICAL REVIEW D,2016,94:9. |
| APA | Aceti, F.,Dai, L. R.,&Oset, E..(2016).a(1)(1420) peak as the pi f(0)(980) decay mode of the a(1)(1260).PHYSICAL REVIEW D,94,9. |
| MLA | Aceti, F.,et al."a(1)(1420) peak as the pi f(0)(980) decay mode of the a(1)(1260)".PHYSICAL REVIEW D 94(2016):9. |
入库方式： OAI收割
来源：近代物理研究所
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