Spin-orbit amplitudes for decays with arbitrary spin

doi:10.1016/j.nuclphysa.2023.122761

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Spin-orbit amplitudes for decays with arbitrary spin
	Li, Xiao-Yu ; Dong, Xiang-Kun ; Jing, Hao-Jie
刊名	NUCLEAR PHYSICS A
	2023
卷号	1040 页码:122761
关键词	RIGHT FORMALISM PHOTOPRODUCTION PARTICLES SEARCH ETA
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2023.122761
英文摘要	In this paper, we propose a method to construct the decay amplitudes in the orbital (L) and spin (S) coupling scheme for particles with arbitrary spins. For the 1 -> 2 decay with only massive particles involved, the angular dependence is completely encoded in the angular momentum part, and the spins of daughter particles are coupled in the rest frame of the mother particle, which contributes only a constant factor. For the sequential decay, the total amplitude is constructed by the two 1 -> 2 amplitudes evaluated in the rest frame of their own mother particles, and then they are transformed to the common frame, usually chosen as the laboratory frame, by certain Lorentz transformations. In this way, it is easy to add the amplitudes of possible different decay chains coherently. If massless particles show up in the final states, the polarizations are expressed in helicity basis and the amplitudes are modified correspondingly. (c) 2023 Elsevier B.V. All rights reserved.
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/311006/28077]
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.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.[Li, Xiao-Yu 3.Dong, Xiang-Kun 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiao-Yu,Dong, Xiang-Kun,Jing, Hao-Jie. Spin-orbit amplitudes for decays with arbitrary spin[J]. NUCLEAR PHYSICS A,2023,1040:122761.
APA	Li, Xiao-Yu,Dong, Xiang-Kun,&Jing, Hao-Jie.(2023).Spin-orbit amplitudes for decays with arbitrary spin.NUCLEAR PHYSICS A,1040,122761.
MLA	Li, Xiao-Yu,et al."Spin-orbit amplitudes for decays with arbitrary spin".NUCLEAR PHYSICS A 1040(2023):122761.