Strong Λπ Phase Shifts for CP Violation in Weak Ξ→ Λπ Decay

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

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

arXiv 1994-07-08 DOI 10.1016/0370-2693(94)91456-7 0 مشاهدة

Strong Λπ Phase Shifts for CP Violation in Weak Ξ→ Λπ Decay

Lu, Ming · Savage, Martin J. · Wise, Mark B.

High Energy Physics - Phenomenology Nuclear Theory

الأصل · EN

Strong interaction Λπ phase shifts relevant for the weak nonleptonic decay Ξ→ Λπ are calculated using baryon chiral perturbation theory. We find in leading order that the S-wave phase shift vanishes and the J=1 2 P-wave phase shift is -1.7 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× SU(2)ᵣ symmetry.

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