• Open Access

Study of Bpp¯ππ

K. Chu et al. (Belle Collaboration)
Phys. Rev. D 101, 052012 – Published 25 March 2020

Abstract

Using a data sample of 772×106BB¯ pairs collected on the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e collider, we report the observation of B0pp¯π+π and the first observation of B+pp¯π+π0. We measure a decay branching fraction of (0.83±0.17±0.17)×106 in B0pp¯π+π for Mπ+π<1.22GeV/c2 with a significance of 5.5 standard deviations. The contribution from B0pp¯K0 is excluded. We measure a decay branching fraction of (4.58±1.17±0.67)×106 for B+pp¯π+π0 with Mπ+π0<1.3GeV/c2 with a significance of 5.4 standard deviations. We study the difference of the Mpp¯ distributions in B0pp¯π+π and B+pp¯π+π0.

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  • Received 13 December 2019
  • Accepted 2 March 2020

DOI:https://doi.org/10.1103/PhysRevD.101.052012

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

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Vol. 101, Iss. 5 — 1 March 2020

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