An effective-field-theory analysis of low-energy parity-violation in nucleon-nucleon scattering

Abstract

We analyze parity-violating nucleon-nucleon scattering at energies E<m_π^2/M using the effective field theory appropriate for this regime. The minimal Lagrangian for short-range parity-violating NN interactions is written in an operator basis that encodes the five partial-wave transitions that dominate at these energies. We calculate the leading-order relationships between parity-violating NN asymmetries and the coefficients in the Lagrangian and also discuss the size of sub-leading corrections. We conclude with a discussion of further observables needed to completely determine the leading-order Lagrangian.

arXiv comment20 pages, 2 figures, minor changes, version to appear in Nuclear Physics A

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