An Effective Field Theory Calculation of the Parity Violating Asymmetry in n+p -> d+gamma
Preprint
- 30 July 1998
Abstract
Weak interactions are expected to induce a parity violating pion-nucleon coupling, h_{\pi NN}^{(1)}. This coupling should be measurable in a proposed experiment to study the parity violating asymmetry A_\gamma in the process \vec n + p \to d+\gamma. We compute the leading dependence of A_\gamma on the coupling h_{\pi NN}^{(1)} using recently developed effective field theory techniques and find an asymmetry of A_\gamma = +0.17 h_{\pi NN}^{(1)} at leading order. This asymmetry has the opposite sign to that given by Desplanques, Donoghue and Holstein.Keywords
All Related Versions
- Version 1, 1998-07-30, ArXiv
- Published version: Physics Letters B, 449 (1-2), 1.
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