Structure of pion photoproduction amplitudes
We derive and apply the finite energy sum rules to pion photoproduction. We evaluate the low-energy part of the sum rules using several state-of-the-art models. Here, we show how the differences in the low-energy side of the sum rules might originate from different quantum number assignments of baryon resonances. We interpret the observed features in the low-energy side of the sum rules with the expectation from Regge theory. Finally, we present a model, in terms of a Regge-pole expansion, that matches the sum rules and the high-energy observables.
- Authors:
-
[1]
; [2]
; [3]
; [4]
; [5]
; [1]
; [6]
; [7]
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center
- Ghent Univ., Ghent (Belgium). Dept. of Physics and Astronomy
- Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Ciencias Nucleares
- Johannes Gutenberg Univ., Mainz (Germany). Inst. fur Kernphysik & PRISMA Cluster of Excellence
- Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter; Indiana Univ., Bloomington, IN (United States). Dept. of Physics
- Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter; Indiana Univ., Bloomington, IN (United States). Dept. of Physics; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center
- Indiana Univ., Bloomington, IN (United States). School of Informatics and Computing
- Publication Date:
- Report Number(s):
- JLAB-THY-18-2755; DOE/OR/-23177-4485; arXiv:1806.08414
Journal ID: ISSN 2470-0010; PRVDAQ
- Grant/Contract Number:
- AC05-06OR23177; FG02-87ER40365; PHY-1415459; PHY-1205019; PHY-1513524; IA101717; 251817
- Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 1; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Research Org:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
- Contributing Orgs:
- Joint Physics Analysis Center
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
- OSTI Identifier:
- 1462289
- Alternate Identifier(s):
- OSTI ID: 1462943
Mathieu, V., Nys, J., Fernandez-Ramirez, C., Blin, A. N. Hiller, Jackura, A., Pilloni, A., Szczepaniak, A. P., and Fox, G.. Structure of pion photoproduction amplitudes. United States: N. p.,
Web. doi:10.1103/PhysRevD.98.014041.
Mathieu, V., Nys, J., Fernandez-Ramirez, C., Blin, A. N. Hiller, Jackura, A., Pilloni, A., Szczepaniak, A. P., & Fox, G.. Structure of pion photoproduction amplitudes. United States. doi:10.1103/PhysRevD.98.014041.
Mathieu, V., Nys, J., Fernandez-Ramirez, C., Blin, A. N. Hiller, Jackura, A., Pilloni, A., Szczepaniak, A. P., and Fox, G.. 2018.
"Structure of pion photoproduction amplitudes". United States.
doi:10.1103/PhysRevD.98.014041.
@article{osti_1462289,
title = {Structure of pion photoproduction amplitudes},
author = {Mathieu, V. and Nys, J. and Fernandez-Ramirez, C. and Blin, A. N. Hiller and Jackura, A. and Pilloni, A. and Szczepaniak, A. P. and Fox, G.},
abstractNote = {We derive and apply the finite energy sum rules to pion photoproduction. We evaluate the low-energy part of the sum rules using several state-of-the-art models. Here, we show how the differences in the low-energy side of the sum rules might originate from different quantum number assignments of baryon resonances. We interpret the observed features in the low-energy side of the sum rules with the expectation from Regge theory. Finally, we present a model, in terms of a Regge-pole expansion, that matches the sum rules and the high-energy observables.},
doi = {10.1103/PhysRevD.98.014041},
journal = {Physical Review D},
number = 1,
volume = 98,
place = {United States},
year = {2018},
month = {7}
}