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  • Published Article: Structure of pion photoproduction amplitudes

Title: 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]
+ Show Author Affiliations
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center
  2. Ghent Univ., Ghent (Belgium). Dept. of Physics and Astronomy
  3. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Ciencias Nucleares
  4. Johannes Gutenberg Univ., Mainz (Germany). Inst. fur Kernphysik & PRISMA Cluster of Excellence
  5. Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter; Indiana Univ., Bloomington, IN (United States). Dept. of Physics
  6. 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
  7. 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