The c-term of the TM 3-body Force: to be or not to be

Details The c-term of the TM 3-body Force: to be or not to be The c-term of the TM 3-body Force: to be or not to be

1999-04-22

arxiv.org/abs/nucl-th/9904060v1

Few Body Syst. 30 (2001) 121-129

Physics

Nuclear Physics

Nuclear Theory

12 pages (3 figures)

Scientific paper

10.1007/s006010170021

In Faddeev calculations of ^3Hwe study the dependence of the binding on the three nucleon force. We adopt the 2 pi -exchange Tucson-Melbourne three-nucleon force and investigate phenomenologically the dependence on the strength of the individual three-body force operators (a -, b -, c - and d -terms). While the a -term provides a tiny contribution the b - and d -terms provides a tiny contribution the b - and d -terms are important to gain the experimental binding energy. We find two solutions for the c -term, one around the value used in the Tucson-Melbourne model and a new one close to zero, which supports the recentrecommendation of chiral perturbation theory that the short-range c -term should be dropped.

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