Universality in the triton charge form factor
Artikel i vetenskaplig tidskrift, 2006

We consider the three-nucleon system within an effective theory with contact interactions at leading order in the large scattering length. We calculate the charge form factor of the triton at low momentum transfer and extract the triton charge radius. At this order, no two-body currents contribute and the calculation can he performed in the impulse approximation. We also comment on the power counting for higher orders. The requirement of a three-body force for renormalization of the three-nucleon system explains the previously observed correlation between the triton binding energy and charge radius for different model potentials. (c) 2005 Elsevier B.V. All rights reserved.

phillips line

bound-states

alpha-particle

scattering length

ground-state

effective-field theory

space faddeev calculations

few-nucleon systems

resonantly-interacting particles

short-range interactions

Författare

H. W. Hammer

Nuclear Physics A

0375-9474 (ISSN)

Vol. 766 132-141

Ämneskategorier

Subatomär fysik