Valence quark contributions for the gamma N -> P11(1440) form factors
Journal Article
·
· Physical Review D
Using a covariant spectator quark model we estimate valence quark contributions to the F_1*(Q2) and F2*(Q2) transition form factors for the gamma N -> P11(1440) reaction. The Roper resonance, P11(1440), is assumed to be the first radial excitation of the nucleon. The present model requires no extra parameters except for those already fixed by the previous studies for the nucleon. Our results are consistent with the experimental data in the high Q2 region, and those from lattice QCD. We also estimate the meson cloud contributions, focusing on the low Q2 region, where they are expected to be dominant.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 977094
- Report Number(s):
- JLAB-THY-10-1134; DOE/OR/23177-1134
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 7 Vol. 81; ISSN PRVDAQ; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Valence quark contributions for the gamma N -> P11(1440) transition
Valence quark contributions for the {gamma}N{yields}P{sub 11}(1440) form factors
Valence quark contributions for the {gamma}N{yields}P{sub 11}(1440) transition
Conference
·
Mon Feb 28 23:00:00 EST 2011
· Few Body Syst.
·
OSTI ID:1010442
Valence quark contributions for the {gamma}N{yields}P{sub 11}(1440) form factors
Journal Article
·
Thu Apr 01 00:00:00 EDT 2010
· Physical Review. D, Particles Fields
·
OSTI ID:21409482
Valence quark contributions for the {gamma}N{yields}P{sub 11}(1440) transition
Journal Article
·
Mon Oct 24 00:00:00 EDT 2011
· AIP Conference Proceedings
·
OSTI ID:21608412