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arXiv · 1507.04459

Possible large $CP$ violation in three body decays of heavy baryon

Zhen-Hua Zhang·Chao Wang·Xin-Heng Guo
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Abstract

We propose a new mechanism which can introduce large $CP$ asymmetries in the phase spaces of three-body decays of heavy baryons. In this mechanism, a large $CP$ asymmetry is induced by the interference of two intermediate resonances, which subsequently decay into two different combinations of final particles. We apply this mechanism to the decay channel $Λ_b^0 \to p π^0π^-$, and find that the differential $CP$ asymmetry can reach as large as $50\%$, while the regional $CP$ asymmetry can reach as large as $16\%$ in the interference region of the phase space.

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Zhen-Hua Zhang, Chao Wang, Xin-Heng Guo. 2015-10-28. Possible large $CP$ violation in three body decays of heavy baryon. https://doi.org/10.1016/j.physletb.2015.10.076

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