Chu, K.Wang, M. Z.Adachi, IAihara, H.Al Said, S.Asner, D. M.Aulchenko, VAushev, T.Ayad, R.Babu, VBadhrees, IBahinipati, S.Bakich, A. M.Behera, P.Beleno, C.Bennett, J.Bhardwaj, VBhuyan, B.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Campajola, M.Cao, L.Cervenkov, D.Chang, P.Chekelian, VChen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, S. K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Dash, N.Di Capua, F.Di Carlo, S.Dolezal, Z.Dong, T. V.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Frey, A.Fulsom, B. G.Garg, R.Gaur, VGabyshev, N.Garmash, A.Giri, A.Goldenzweig, P.Golob, B.Hartbrich, O.Hayasaka, K.Hayashii, H.Hou, W. S.Hsu, C. L.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jeon, H. B.Jin, Y.Joffe, D.Joo, K. K.Karyan, G.Kawasaki, T.Kim, D. Y.Kim, S. H.Kinoshita, K.Kodys, P.Korpar, S.Krizan, P.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.Lieret, K.Liventsev, D.Luo, T.Masuda, M.Matvienko, D.Merola, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mori, T.Mussa, R.Nakano, E.Nakano, T.Nakao, M.Nath, K. J.Nayak, M.Nisar, N. K.Nishida, S.Nishimura, K.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Pal, B.Pang, T.Pardi, S.Park, C. W.Park, H.Park, S. H.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, VPrencipe, E.Prim, M. T.Resmi, P. K.Ritter, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Santelj, L.Savinov, VSchneider, O.Schnell, G.Schueler, J.Schwanda, 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.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Vinokurova, A.Vossen, A.Wang, B.Wang, C. H.Wang, P.Wang, X. L.Wiechczynski, J.Won, E.Yang, S. B.Ye, H.Yelton, J.Yin, J. H.Yusa, Y.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V2020-04-122020-04-122020-04-122020-03-2510.1103/PhysRevD.101.052012https://infoscience.epfl.ch/handle/20.500.14299/168148WOS:000522162000004Using a data sample of 772 x 10(6) B (B) over bar pairs collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider, we report the observation of B-0 -> p (p) over bar pi(+)pi(-) and the first observation of B+ -> p (p) over bar pi(+)pi(0). We measure a decay branching fraction of (0.83 +/- 0.17 +/- 0.17) x 10(-6) in B-0 -> p (p) over bar pi(+)pi(-) for M pi+pi- < 1.22 GeV/c(2) with a significance of 5.5 standard deviations. The contribution from B-0 -> p (p) over barK(0) is excluded. We measure a decay branching fraction of (4.58 +/- 1.17 +/- 0.67) x 10(-6) for B+ -> p (p) over bar pi(+)pi(0 )with M pi+pi 0 < 1.3 GeV/c(2) with a significance of 5.4 standard deviations. We study the difference of the M-p((p) over bar) distributions in B-0 -> p (p) over bar pi(+)pi(-) and B-0 -> p (p) over bar pi(+)pi(0).Astronomy & AstrophysicsPhysics, Particles & FieldsAstronomy & AstrophysicsPhysicsannihilationviolationtext::journal::journal article::research article