Evidence for B_s^0 -> Lambda_c^+ Lambda-bar pi^-
Belle Collaboration: E. Solovieva, R. Chistov, I. Adachi, D. M. Asner,, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, M. Bischofberger,, A. Bondar, G. Bonvicini, A. Bozek, M. Bra\v{c}ko, T. E. Browder, V., Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho
TL;DR
This paper reports the first evidence of a baryonic decay mode of the B_s^0 meson, specifically B_s^0 -> Lambda_c^+ Lambda-bar pi^-, with a measured branching fraction and a significance of 4.4 sigma.
Contribution
It provides the first experimental evidence for a baryonic decay of the B_s^0 meson, expanding understanding of heavy meson decay channels.
Findings
Measured branching fraction: (3.6 +- 1.1(stat.) +0.3 -0.5(syst.) +0.9[Lambda_c^+] +0.7[N_{Bs}]) x 10^{-4}
Decay mode observed with 4.4 sigma significance
First evidence for a baryonic B_s^0 decay
Abstract
Using 121.4 fb^{-1} of data collected with the Belle detector at the Y(5S) resonance at the KEKB asymmetric-energy e^+e^- collider, we report evidence for the B_s^0 -> Lambda_c^+ Lambda-bar pi^- decay mode with a measured branching fraction (3.6 +- 1.1[stat.] {+0.3 -0.5}[syst.] +- 0.9[Lambda_c^+] +- 0.7[N_{Bs}]) * 10^{-4} and a significance of 4.4 standard deviations. This is the first evidence for a baryonic B_s^0 decay.
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