Search for X(3872) and X(3915) decay into χc1π0 in B decays at Belle

Bhardwaj, V and Giri, Anjan Kumar et. al (2019) Search for X(3872) and X(3915) decay into χc1π0 in B decays at Belle. arXiv. pp. 1-7.

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Abstract

We report a search for X(3872) and X(3915) in B+→χc1π0K+ decays. We set an upper limit of B(B+→X(3872)K+)×B(X(3872)→χc1π0) <8.1×10−6 and B(B+→X(3915)K+)×B(X(3915)→χc1π0) <3.8×10−5 at 90\% confidence level. We also measure B(X(3872)→χc1π0)/B(X(3872)→J/ψπ+π−)<0.97 at 90\% confidence level. The results reported here are obtained from 772×106 BB¯¯¯¯ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider

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