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Gonzalez-Solis, S; Passemar, E1,2,3
eta' -> eta pi pi decays in unitarized resonance chiral theory
发表期刊EUROPEAN PHYSICAL JOURNAL C
语种英语
关键词LARGE-N-C PERTURBATION-THEORY FORM-FACTORS SCATTERING MESON QUARK
摘要We study the hadronic eta' -> eta pi pi decays within the framework of U(3)(L) circle times U(3)(R) Chiral Perturbation Theory including resonance states and the complete one-loop corrections. The amplitude is projected in partial waves and unitarized by means of the N/D method resumming both the important S- and D-wave pi pi and the subleading S-wave pi eta final-state interactions. The participating scalar multiplet mass and coupling strengths are determined from fits to the Dalitz plot experimental data recently released by the A2 collaboration. As a byproduct of our analysis, the associated Dalitz-plot slope parameters are found to be a = -0.072(7)(stat) (8)(syst), b = -0.052(1)(stat)(2)(syst), d = -0.051(8)(stat)(6)(syst), which lie in the ballpark of the current experimental and theoretical determinations.
2018
ISSN1434-6044
卷号78期号:9页码:758
学科领域Physics
学科门类Physics, Particles & Fields
DOI10.1140/epjc/s10052-018-6238-6
收录类别SCIE
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22813
专题理论物理所科研产出_SCI论文
作者单位1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
3.Indiana Univ, Ctr Explorat Energy & Matter, Bloomington, IN 47408 USA
4.Thomas Jefferson Natl Accelerator Facil, Theory Ctr, Newport News, VA 23606 USA
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Gonzalez-Solis, S,Passemar, E. eta' -> eta pi pi decays in unitarized resonance chiral theory[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(9):758.
APA Gonzalez-Solis, S,&Passemar, E.(2018).eta' -> eta pi pi decays in unitarized resonance chiral theory.EUROPEAN PHYSICAL JOURNAL C,78(9),758.
MLA Gonzalez-Solis, S,et al."eta' -> eta pi pi decays in unitarized resonance chiral theory".EUROPEAN PHYSICAL JOURNAL C 78.9(2018):758.
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