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arXiv 0812.2073nucl-thhep-phnucl-ex
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核子-核子散射低能宇称破坏的有效场论分析

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

Daniel R. Phillips, Matthias R. Schindler, Roxanne P. Springer

摘要:

我们用适合于此区域的有效场论分析了能量E<m_π^2/M的宇称破缺核子-核子散射。短程宇称违反NN相互作用的最小拉格朗日写在一个运营商的基础上,编码在这些能量占主导地位的五个分波过渡。我们计算了违反奇偶性的NN不对称性和拉格朗日量中的系数之间的领先顺序关系,并讨论了子领先校正的大小。最后,我们讨论了进一步的观测需要完全确定的领先阶拉格朗日。

英文摘要:

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.

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