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Title: What is the right formalism to search for resonances? II. The pentaquark chain: Joint Physics Analysis Center

Abstract

We discuss the differences between several partial-wave analysis formalisms used in the construction of three-body decay amplitudes involving fermions. Specifically, we consider the decay Λ b ψ p K , where the hidden charm pentaquark signal has been reported. We analyze the analytical properties of the amplitudes and separate kinematical and dynamical singularities. The result is an amplitude with the minimal energy dependence compatible with the S-matrix principles.

Authors:
ORCiD logo; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Indiana Univ., Bloomington, IN (United States); Univ. of Bonn (Germany); National Autonomous Univ. of Mexico, Mexico City (Mexico); Ghent Univ. (Belgium); Univ. of Murcia (Spain)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF); German Federal Ministry of Education and Research (BMBF); National Autonomous Univ. of Mexico (UNAM); National Council of Science and Technology (CONACYT) (Mexico); Research Foundation - Flanders (FWO) (Belgium); Ministry of Economy and Enterprise (MINECO) (Spain)
OSTI Identifier:
1469218
Alternate Identifier(s):
OSTI ID: 1472279
Report Number(s):
[JLAB-THY-18-2700; DOE/OR/23177-4548; arXiv:1805.02113]
[Journal ID: ISSN 1434-6044; 727; PII: 6177]
Grant/Contract Number:  
[AC05-06OR23177; FG02-87ER40365; IA101717; 251817; PHY-1507572; PHY-1415459; PHY-1205019; FPA2016-77313-P]
Resource Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
[Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 78 Journal Issue: 9]; Journal ID: ISSN 1434-6044
Publisher:
Springer Science + Business Media
Country of Publication:
Germany
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Pilloni, A., Nys, J., Mikhasenko, M., Albaladejo, M., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Sherrill, N., Skwarnicki, T., and Szczepaniak, A. P. What is the right formalism to search for resonances? II. The pentaquark chain: Joint Physics Analysis Center. Germany: N. p., 2018. Web. doi:10.1140/epjc/s10052-018-6177-2.
Pilloni, A., Nys, J., Mikhasenko, M., Albaladejo, M., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Sherrill, N., Skwarnicki, T., & Szczepaniak, A. P. What is the right formalism to search for resonances? II. The pentaquark chain: Joint Physics Analysis Center. Germany. doi:10.1140/epjc/s10052-018-6177-2.
Pilloni, A., Nys, J., Mikhasenko, M., Albaladejo, M., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Sherrill, N., Skwarnicki, T., and Szczepaniak, A. P. Sat . "What is the right formalism to search for resonances? II. The pentaquark chain: Joint Physics Analysis Center". Germany. doi:10.1140/epjc/s10052-018-6177-2.
@article{osti_1469218,
title = {What is the right formalism to search for resonances? II. The pentaquark chain: Joint Physics Analysis Center},
author = {Pilloni, A. and Nys, J. and Mikhasenko, M. and Albaladejo, M. and Fernández-Ramírez, C. and Jackura, A. and Mathieu, V. and Sherrill, N. and Skwarnicki, T. and Szczepaniak, A. P.},
abstractNote = {We discuss the differences between several partial-wave analysis formalisms used in the construction of three-body decay amplitudes involving fermions. Specifically, we consider the decay Λ b → ψ p K − , where the hidden charm pentaquark signal has been reported. We analyze the analytical properties of the amplitudes and separate kinematical and dynamical singularities. The result is an amplitude with the minimal energy dependence compatible with the S-matrix principles.},
doi = {10.1140/epjc/s10052-018-6177-2},
journal = {European Physical Journal. C, Particles and Fields},
number = [9],
volume = [78],
place = {Germany},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1140/epjc/s10052-018-6177-2

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Cited by: 1 work
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