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Title: Pion electromagnetic form factor in the Covariant Spectator Theory

The pion electromagnetic form factor at spacelike momentum transfer is calculated in relativistic impulse approximation using the Covariant Spectator Theory. The same dressed quark mass function and the equation for the pion bound-state vertex function as discussed in the companion paper are used for the calculation, together with a dressed quark current that satisfies the Ward-Takahashi identity. The results obtained for the pion form factor are in agreement with experimental data, they exhibit the typical monopole behavior at high momentum transfer and they satisfy some remarkable scaling relations.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  1. CFTP, Institute Superior Tecnico, Lisboa (Portugal)
  2. JLAB, Newport News, VA (United States)
  3. University of Evora, Lisboa (Portugal)
Publication Date:
OSTI Identifier:
1114219
Report Number(s):
JLAB-THY--13-1815; DOE/OR--23177-2872
Journal ID: ISSN 0556-2821; arXiv:1310.7465; TRN: US1400137
DOE Contract Number:
AC05-06OR23177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 89; Journal Issue: 01
Publisher:
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC) (United States)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS