a(0)(980) - f(0)(980) mixing in chi(c1) -> pi(0)f(0)(980) -> pi(0)pi(+)pi(-) and chi(c1) -> pi(0) a(0)(980) -> pi(0)pi(0)eta
文献类型：期刊论文
| 作者 | Bayar, M.1,2,3; Debastiani, V. R.2,3,4 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2017-12-10 |
| 卷号 | 775页码:94-99 |
| 关键词 | Isospin-breaking a(0)(980) - f(0)(980) mixing Charmonium decays Scalar meson states |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2017.10.061 |
| 英文摘要 | We study the isospin breaking in the reactions chi(c1) -> pi(0)pi(+)pi(-) and chi(c1) -> pi(0)pi(0)eta and its relation to the a(0)(980) - f(0)(980) mixing, which was measured by the BESIII Collaboration. We show that the same theoretical model previously developed to study the chi(c1) -> eta pi(+)pi(-) reaction (also measured by BESIII), and further explored in the predictions to the eta(c) -> eta pi(+)pi(-), can be successfully employed in the present study. We assume that the chi(c1) behaves as an SU(3) singlet to find the weight in which trios of pseudoscalars are created, followed by the final state interaction of pairs of mesons to describe how the a(0)(980) and f(0)(980) are dynamically generated, using the chiral unitary approach in coupled channels. The isospin violation is introduced through the use of different masses for the charged and neutral kaons, either in the propagators of pairs of mesons created in the chi(c1) decay, or in the propagators inside the T matrix, constructed through the unitarization of the scattering and transition amplitudes of pairs of pseudoscalar mesons. We find that violating isospin inside the T matrix makes the pi(0)eta -> pi(+)pi(-) amplitude nonzero, which gives an important contribution and also enhances the effect of the K (K) over bar term. We also find that the most important effect in the total amplitude is the isospin breaking inside the T matrix, due to the constructive sum of pi(0)eta -> pi(+)pi(-) and K (K) over bar -> pi(+)pi(-), which is essential to get a good agreement with the experimental measurement of the mixing. (C) 2017 The Author(s). Published by Elsevier B.V. |
| WOS关键词 | SCALAR MESONS ; SEARCH ; DECAYS ; MODEL |
| 资助项目 | Programa Santiago Grisolia of Generalitat Valenciana[GRISO-LIA/2015/005] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000417190700014 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Programa Santiago Grisolia of Generalitat Valenciana |
| 源URL | [http://119.78.100.186/handle/113462/46107]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Debastiani, V. R. |
| 作者单位 | 1.Kocaeli Univ, Dept Phys, TR-41380 Izmir, Turkey 2.Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor,Ctr Mixto, Aptdo 22085, Valencia 46071, Spain 3.Univ Valencia, CSIC, Inst Invest Paterna, IFIC,Ctr Mixto, Aptdo 22085, Valencia 46071, Spain 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bayar, M.,Debastiani, V. R.. a(0)(980) - f(0)(980) mixing in chi(c1) -> pi(0)f(0)(980) -> pi(0)pi(+)pi(-) and chi(c1) -> pi(0) a(0)(980) -> pi(0)pi(0)eta[J]. PHYSICS LETTERS B,2017,775:94-99. |
| APA | Bayar, M.,&Debastiani, V. R..(2017).a(0)(980) - f(0)(980) mixing in chi(c1) -> pi(0)f(0)(980) -> pi(0)pi(+)pi(-) and chi(c1) -> pi(0) a(0)(980) -> pi(0)pi(0)eta.PHYSICS LETTERS B,775,94-99. |
| MLA | Bayar, M.,et al."a(0)(980) - f(0)(980) mixing in chi(c1) -> pi(0)f(0)(980) -> pi(0)pi(+)pi(-) and chi(c1) -> pi(0) a(0)(980) -> pi(0)pi(0)eta".PHYSICS LETTERS B 775(2017):94-99. |
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来源：近代物理研究所
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