Low-energy theorems for nucleon-nucleon scattering
Aug, 199810 pages
Published in:
- Phys.Rev.C 59 (1999) 13-20
e-Print:
- nucl-th/9808038 [nucl-th]
Report number:
- DOE-ER-40762-156,
- UMD-99-011
Citations per year
Abstract:
Low energy theorems are derived for the coefficients of the effective range expansion in s-wave nucleon-nucleon scattering valid to leading order in an expansion in which both and (where is the scattering length) are treated as small mass scales. Comparisons with phase shift data, however, reveal a pattern of gross violations of the theorems for all coefficients in both the and channels. Analogous theorems are developed for the energy dependence parameter which describes mixing. These theorems are also violated. These failures strongly suggest that the physical value of is too large for the chiral expansion to be valid in this context. Comparisons of with phenomenological scales known to arise in the two-nucleon problem support this conjecture.- nucleon nucleon: elastic scattering
- partial wave analysis
- approximation: effective range
- low-energy theorem
- expansion
- pi: mass
- nucleon nucleon: scattering length
- numerical calculations: interpretation of experiments
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