Study of $B \to p {\bar p} \pi \pi$
- Chu, K.
- Wang, M.-Z.
- Badhrees, I.
- Nakano, E.
- Nakano, T.
- Nakao, M.
- Nath, K. J.
- Nayak, M.
- Nisar, N. K.
- Nishida, S.
- Nishimura, K.
- Ono, H.
- Onuki, Y.
- Bahinipati, S.
- Oskin, P.
- Pakhlov, P.
- Pakhlova, G.
- Pal, B.
- Pang, T.
- Pardi, S.
- Park, C. W.
- Park, H.
- Park, S.-H.
- Paul, S.
- Bakich, A. M.
- Pedlar, T. K.
- Pestotnik, R.
- Piilonen, L. E.
- Popov, V.
- Prencipe, E.
- Prim, M. T.
- Resmi, P. K.
- Ritter, M.
- Rostomyan, A.
- Rout, N.
- Behera, P.
- Russo, G.
- Sahoo, D.
- Sakai, Y.
- Sandilya, S.
- Santelj, L.
- Savinov, V.
- Schneider, O.
- Schnell, G.
- Schueler, J.
- Schwanda, C.
- Beleno, C.
- Seino, Y.
- Senyo, K.
- Sevior, M. E.
- Shen, C. P.
- Shiu, J.-G.
- Solovieva, E.
- Staric, M.
- Stottler, Z. S.
- Sumiyoshi, T.
- Sutcliffe, W.
- Bennett, J.
- Takizawa, M.
- Tamponi, U.
- Tanida, K.
- Tenchini, F.
- Uglov, T.
- Unno, Y.
- Uno, S.
- Urquijo, P.
- Usov, Y.
- Varner, G.
- Bhardwaj, V.
- Vinokurova, A.
- Vossen, A.
- Wang, B.
- Wang, C. H.
- Wang, P.
- Wang, X. L.
- Wiechczynski, J.
- Won, E.
- Yang, S. B.
- Ye, H.
- Bhuyan, B.
- Yelton, J.
- Yin, J. H.
- Yusa, Y.
- Zhang, Z. P.
- Zhilich, V.
- Zhukova, V.
- Zhulanov, V.
- Belle Collaboration
- Biswal, J.
- Bobrov, A.
- Adachi, I.
- Bonvicini, G.
- Bozek, A.
- Bracko, M.
- Campajola, M.
- Cao, L.
- Cervenkov, D.
- Chang, P.
- Chekelian, V.
- Chen, A.
- Cheon, B. G.
- Aihara, H.
- Chilikin, K.
- Cho, H. E.
- Cho, K.
- Choi, S.-K.
- Choi, Y.
- Choudhury, S.
- Cinabro, D.
- Cunliffe, S.
- Dash, N.
- Di Capua, F.
- Al Said, S.
- Di Carlo, S.
- Dolezal, Z.
- Dong, T. V.
- Eidelman, S.
- Epifanov, D.
- Fast, J. E.
- Ferber, T.
- Frey, A.
- Fulsom, B. G.
- Garg, R.
- Asner, D. M.
- Gaur, V.
- Gabyshev, N.
- Garmash, A.
- Giri, A.
- Goldenzweig, P.
- Golob, B.
- Hartbrich, O.
- Hayasaka, K.
- Hayashii, H.
- Hou, W.-S.
- Aulchenko, V.
- Hsu, C.-L.
- Iijima, T.
- Inami, K.
- Ishikawa, A.
- Itoh, R.
- Iwasaki, M.
- Iwasaki, Y.
- Jacobs, W. W.
- Jeon, H. B.
- Jin, Y.
- Aushev, T.
- Joffe, D.
- Joo, K. K.
- Karyan, G.
- Kawasaki, T.
- Kim, D. Y.
- Kim, S. H.
- Kinoshita, K.
- Kodys, P.
- Korpar, S.
- Krizan, P.
- Ayad, R.
- Kroeger, R.
- Krokovny, P.
- Kulasiri, R.
- Kwon, Y.-J.
- Lai, Y.-T.
- Lee, I. S.
- Lee, S. C.
- Li, L. K.
- Li Gioi, L.
- Libby, J.
- Babu, V.
- Lieret, K.
- Liventsev, D.
- Luo, T.
- Masuda, M.
- Matvienko, D.
- Merola, M.
- Miyabayashi, K.
- Mizuk, R.
- Mori, T.
- Mussa, R.
DOIAbstract
Using a data sample of $772 × 10^6$ $B\bar B$ pairs collected on the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider, we report the observation of $B^0 \to p\bar{p} π^+ π^-$ and the first observation of $B^+\to p\bar{p} π^+ π^0$. We measure a decay branching fraction of $(0.83±0.17±0.17) × 10^{-6}$ 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 $B^0 \to p\bar{p} K^0$ is excluded. We measure a decay branching fraction of $(4.58±1.17±0.67) × 10^{-6}$ 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 $M_{p\bar{p}}$ distribution...
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