Strong $\Lambda \pi$ Phase Shifts for CP Violation in Weak $\Xi \rightarrow \Lambda \pi$ Decay

Ming Lu; Martin J. Savage; Mark B. Wise

doi:10.1016/0370-2693(94)91456-7

Strong $\Lambda \pi$ Phase Shifts for CP Violation in Weak $\Xi \rightarrow \Lambda \pi$ Decay

高能物理 - 唯象学 2010-11-01 v1 核理论

作者: Ming Lu , Martin J. Savage , Mark B. Wise

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摘要

Strong interaction $\Lambda\pi$ phase shifts relevant for the weak nonleptonic decay $\Xi \rightarrow \Lambda \pi$ are calculated using baryon chiral perturbation theory. We find in leading order that the S-wave phase shift vanishes and the $J={1 \over 2}$ P-wave phase shift is $-1.7 ^{\rm o}$ . The small phase shifts imply that CP violation in this decay will be difficult to observe. Our results follow from chiral $SU(2)_L\times SU(2)_R$ symmetry.

关键词

cp violation chiral perturbation theory kaon decays

引用

@article{arxiv.hep-ph/9407260,
  title  = {Strong $\Lambda \pi$ Phase Shifts for CP Violation in Weak $\Xi \rightarrow \Lambda \pi$ Decay},
  author = {Ming Lu and Martin J. Savage and Mark B. Wise},
  journal= {arXiv preprint arXiv:hep-ph/9407260},
  year   = {2010}
}

备注

8 pages, uses phyzzx, 2 figures included as uuencoded file, CALT-68-1940 and CMU-HEP94-22

Strong $\Lambda \pi$ Phase Shifts for CP Violation in Weak $\Xi \rightarrow \Lambda \pi$ Decay

摘要

关键词

引用

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