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arXiv · 1912.05999

Study of $B \to p {\bar p} ππ$

K. Chu·M. -Z. Wang·I. Adachi·H. Aihara·S. Al Said·D. M. Asner·V. Aulchenko·T. Aushev·R. Ayad·V. Babu·I. Badhrees·S. Bahinipati·A. M. Bakich·P. Behera·C. Beleno·J. Bennett·V. Bhardwaj·B. Bhuyan·J. Biswal·A. Bobrov·G. Bonvicini·A. Bozek·M. Bracko·M. Campajola·L. Cao·D. Cervenkov·P. Chang·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·H. E. Cho·K. Cho·S. -K. Choi·Y. Choi·S. Choudhury·D. Cinabro·S. Cunliffe·N. Dash·F. Di Capua·S. Di Carlo·Z. Dolezal·T. V. Dong·S. Eidelman·D. Epifanov·J. E. Fast·T. Ferber·A. Frey·B. G. Fulsom·R. Garg·V. Gaur·N. Gabyshev·A. Garmash·A. Giri·P. Goldenzweig·B. Golob·O. Hartbrich·K. Hayasaka·H. Hayashii·W. -S. Hou·C. -L. Hsu·T. Iijima·K. Inami·A. Ishikawa·R. Itoh·M. Iwasaki·Y. Iwasaki·W. W. Jacobs·H. B. Jeon·Y. Jin·D. Joffe·K. K. Joo·G. Karyan·T. Kawasaki·D. Y. Kim·S. H. Kim·K. Kinoshita·P. Kodys·S. Korpar·P. Krizan·R. Kroeger·P. Krokovny·R. Kulasiri·Y. -J. Kwon·Y. -T. Lai·I. S. Lee·S. C. Lee·L. K. Li·L. Li Gioi·J. Libby·K. Lieret·D. Liventsev·T. Luo·M. Masuda·D. Matvienko·M. Merola·K. Miyabayashi·R. Mizuk·T. Mori·R. Mussa
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Abstract

Using a data sample of $772 \times 10^6$ BB pairs collected on the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we report the observations of $B^0\to p{\bar p}π^+π^-$ and $B^+ \to p{\bar p}π^+π^0$. We measure a decay branching fraction of $(0.83 \pm 0.17 \pm 0.17) \times 10^-6$ in $B^0\to p{\bar p}π^+π^-$ for $M_{π^+π^-} < 1.22 GeV/c^2$ with a significance of 5.5 standard deviations. The contribution from $B0 \to p{\bar p}K^0$ is excluded. We measure a decay branching fraction of $(4.58 \pm 1.17 \pm 0.67) \times 10^-6$ for $B^+ \to p{\bar p}π^+π^0$ with $M_{π^+π^0} < 1.3 GeV/c^2$ with a significance of 5.4 standard deviations. We study the difference of the $M_{p{\bar p}}$ distributions in $B^0\to p{\bar p}π^+π^-$ and $B^+ \to p{\bar p}π^+π^0$.

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K. Chu, M. -Z. Wang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, P. Behera, C. Beleno, J. Bennett, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, M. Campajola, L. Cao, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. -K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, F. Di Capua, S. Di Carlo, Z. Dolezal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Hartbrich, K. Hayasaka, H. Hayashii, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, G. Karyan, T. Kawasaki, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, R. Kroeger, P. Krokovny, R. Kulasiri, Y. -J. Kwon, Y. -T. Lai, I. S. Lee, S. C. Lee, L. K. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, T. Luo, M. Masuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, T. Mori, R. Mussa. 2019-12-16. Study of $B \to p {\bar p} ππ$. https://doi.org/10.1103/physrevd.101.052012

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