Covariant spectator theory for the electromagnetic three-nucleon form factors: Complete impulse approximation

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Physical Review C

OSTI ID:956297

Alexandre Pinto, SÂ ergio; Stadler, Alfred; Gross, Franz

We present the first calculations of the electromagnetic form factors of 3He and 3H within the framework of the Covariant Spectator Theory (CST). This first exploratory study concentrates on the sensitivity of the form factors to the strength of the scalar meson-nucleon off-shell coupling, known from previous studies to have a strong influence on the three-body binding energy. Results presented here were obtained using the complete impulse approximation (CIA), which includes contributions of relativistic origin that appear as two-body corrections in a non-relativistic framework, such as ?Z-graphs?, but omits other two and three-body currents. We compare our results to non-relativistic calculations augmented by relativistic corrections of O(v/c)2.

• Research Organization: Thomas Jefferson Lab National Accelerator Facility
• Sponsoring Organization: USDOE
• OSTI ID: 956297
• Report Number(s): JLAB-THY-09-939; arXiv:0901.4313; DOE/OR/23177-0617
• Journal Information: Physical Review C, Journal Name: Physical Review C; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
ELECTROMAGNETIC FORM FACTORS
FORM FACTORS
IMPULSE APPROXIMATION
ORIGIN
SCALARS
SENSITIVITY