Two-meson form factors in unitarized chiral perturbation theory

doi:10.1007/JHEP04(2021)086

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	Two-meson form factors in unitarized chiral perturbation theory
	Shi, Yu-Ji ; Seng, Chien-Yeah ; Guo, Feng-Kun ; Kubis, Bastian ; Meissner, Ulf-G ; Wang, Wei 7
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2021
期号	4 页码:86
ISSN号	1029-8479
DOI	10.1007/JHEP04(2021)086
英文摘要	We present a comprehensive analysis of form factors for two light pseudoscalar mesons induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a combination of unitarized chiral perturbation theory and dispersion relations. The low-energy constants in chiral perturbation theory are fixed by a global fit to the available data of the two-meson scattering phase shifts. Each form factor derived from unitarized chiral perturbation theory is improved by iteratively applying a dispersion relation. This study updates the existing results in the literature and explores those that have not been systematically studied previously, in particular the two-meson tensor form factors within unitarized chiral perturbation theory. We also discuss the applications of these form factors as mandatory inputs for low-energy phenomena, such as the semi-leptonic decays B-s -> pi(+)pi(-)l(+)l(-) and the tau lepton decay tau -> pi(-)pi(0)nu(tau), in searches for physics beyond the Standard Model.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27528]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 2.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 5.Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany 6.Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany 7.Tbilisi State Univ, GE-0186 Tbilisi, Georgia 8.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, MOE Key Lab Particle Astrophys & Cosmol,INPAC, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Shi, Yu-Ji,Seng, Chien-Yeah,Guo, Feng-Kun,et al. Two-meson form factors in unitarized chiral perturbation theory[J]. JOURNAL OF HIGH ENERGY PHYSICS,2021(4):86.
APA	Shi, Yu-Ji,Seng, Chien-Yeah,Guo, Feng-Kun,Kubis, Bastian,Meissner, Ulf-G,&Wang, Wei.(2021).Two-meson form factors in unitarized chiral perturbation theory.JOURNAL OF HIGH ENERGY PHYSICS(4),86.
MLA	Shi, Yu-Ji,et al."Two-meson form factors in unitarized chiral perturbation theory".JOURNAL OF HIGH ENERGY PHYSICS .4(2021):86.