Extraction of a_nn from pi- d -> n n gamma

Details Extraction of a_nn from pi- d -> n n gamma Extraction of a_nn from pi- d -> n n gamma

2006-11-03

arxiv.org/abs/nucl-th/0611010v1

Physics

Nuclear Physics

Nuclear Theory

2 pages, 2 eps figures, uses ws-procs9x6.cls, summary of invited talk at Chiral Dynamics 2006, Sept. 18-22, Durham/Chapel Hill

Scientific paper

I present a calculation of the pi- d -> n n gamma reaction to third order in
chiral perturbation theory. The short-distance physics of this reaction can be
constrained by relating it to several important low-energy weak reactions. The
theoretical error in a_nn extracted from this reaction can thus be reduced by a
factor larger than three to +-0.05 fm.

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