Khuri-Treiman equations for 3$$π$$ decays of particles with spin
Abstract
Khuri-Treiman equations have proven to be a useful theoretical tool in the analysis of three-body decays, especially into the 3$$π$$ final state. In this work we present in full detail the necessary generalization of the formalism to study the decays of particles with arbitrary spin, parity, and charge conjugation. To this extent, we find it most convenient to work with helicity amplitudes instead of the so-called invariant amplitudes, especially when dealing with the unitarity relations. The isobar expansions in the three possible (s-, t-, and u-) final channels are related with the appropriate crossing matrices. We pay special attention to the kinematical singularities and constraints of the helicity amplitudes, showing that these can be derived by means of the crossing matrix.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Ministerio de Ciencia, Innovación y Universidades (Spain); National Autonomous University of Mexico (UNAM); Consejo Nacional de Ciencia y Tecnología (CONACYT); German Research Foundation (DFG); German Excellence Strategy; Comunidad Autónoma de Madrid
- Contributing Org.:
- JPAC Collaboration
- OSTI Identifier:
- 1604504
- Alternate Identifier(s):
- OSTI ID: 1604951
- Report Number(s):
- JLAB-THY-19-3066; DOE/OR/23177-4788
Journal ID: ISSN 2470-0010; PRVDAQ; 054018
- Grant/Contract Number:
- AC05-06OR23177; FG02-87ER40365; PHY-1415459; IA101819; 251817; 734789; A1-S-21389; 204404729—SFB 1044; FPA2016-77313-P; FPA2016-75654-C2-2-P; 39083149
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 101 Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Albaladejo, M., Winney, D., Danilkin, I. V., Fernández-Ramírez, C., Mathieu, V., Mikhasenko, M., Pilloni, A., Silva-Castro, J. A., Szczepaniak, A. P., and JPAC Collaboration. Khuri-Treiman equations for 3$π$ decays of particles with spin. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.054018.
Albaladejo, M., Winney, D., Danilkin, I. V., Fernández-Ramírez, C., Mathieu, V., Mikhasenko, M., Pilloni, A., Silva-Castro, J. A., Szczepaniak, A. P., & JPAC Collaboration. Khuri-Treiman equations for 3$π$ decays of particles with spin. United States. https://doi.org/10.1103/PhysRevD.101.054018
Albaladejo, M., Winney, D., Danilkin, I. V., Fernández-Ramírez, C., Mathieu, V., Mikhasenko, M., Pilloni, A., Silva-Castro, J. A., Szczepaniak, A. P., and JPAC Collaboration. Fri .
"Khuri-Treiman equations for 3$π$ decays of particles with spin". United States. https://doi.org/10.1103/PhysRevD.101.054018.
@article{osti_1604504,
title = {Khuri-Treiman equations for 3$π$ decays of particles with spin},
author = {Albaladejo, M. and Winney, D. and Danilkin, I. V. and Fernández-Ramírez, C. and Mathieu, V. and Mikhasenko, M. and Pilloni, A. and Silva-Castro, J. A. and Szczepaniak, A. P. and JPAC Collaboration},
abstractNote = {Khuri-Treiman equations have proven to be a useful theoretical tool in the analysis of three-body decays, especially into the 3$π$ final state. In this work we present in full detail the necessary generalization of the formalism to study the decays of particles with arbitrary spin, parity, and charge conjugation. To this extent, we find it most convenient to work with helicity amplitudes instead of the so-called invariant amplitudes, especially when dealing with the unitarity relations. The isobar expansions in the three possible (s-, t-, and u-) final channels are related with the appropriate crossing matrices. We pay special attention to the kinematical singularities and constraints of the helicity amplitudes, showing that these can be derived by means of the crossing matrix.},
doi = {10.1103/PhysRevD.101.054018},
journal = {Physical Review. D.},
number = 5,
volume = 101,
place = {United States},
year = {Fri Mar 13 00:00:00 EDT 2020},
month = {Fri Mar 13 00:00:00 EDT 2020}
}
https://doi.org/10.1103/PhysRevD.101.054018
Web of Science
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