Helicity Amplitudes for Generic Multibody Particle Decays Featuring Multiple Decay Chains
Author
Source
Advances in High Energy Physics
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-21
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
We present the general expression of helicity amplitudes for generic multibody particle decays characterised by multiple decay chains.
This is achieved by addressing for the first time the issue of the matching of the final particle spin states among different decay chains in full generality for generic multibody decays, proposing a method able to match the exact definition of spin states relative to the decaying particle ones.
We stress the importance of our result by showing that one of the matching methods used in the literature is incorrect, leading to amplitude models violating rotational invariance.
The results presented are therefore relevant for performing numerous amplitude analyses, notably those searching for exotic structures like pentaquarks.
American Psychological Association (APA)
Marangotto, Daniele. 2020. Helicity Amplitudes for Generic Multibody Particle Decays Featuring Multiple Decay Chains. Advances in High Energy Physics،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1126625
Modern Language Association (MLA)
Marangotto, Daniele. Helicity Amplitudes for Generic Multibody Particle Decays Featuring Multiple Decay Chains. Advances in High Energy Physics No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1126625
American Medical Association (AMA)
Marangotto, Daniele. Helicity Amplitudes for Generic Multibody Particle Decays Featuring Multiple Decay Chains. Advances in High Energy Physics. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1126625
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1126625