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First Measurement of the B+ → π+π0π0 Branching Fraction and CP Asymmetryopen access
- Authors
- Lai, Y. -T.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Bahinipati, S.; Behera, P.; Belous, K.; Bennett, J.; Bessner, M.; Bhuyan, B.; Bilka, T.; Bobrov, A.; Borah, J.; Bozek, A.; Bracko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Campajola, M.; Cervenkov, D.; Chang, M. -C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; Cho, S. -J.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Cunliffe, S.; Czank, T.; Das, S.; De Nardo, G.; De Pietro, G.; Dhamija, R.; Di Capua, F.; Dingfelder, J.; Dolezal, Z.; Dong, T., V; Ferber, T.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Giri, A.; Goldenzweig, P.; Graziani, E.; Gu, T.; Guan, Y.; Gudkova, K.; Hadjivasiliou, C.; Halder, S.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Higuchi, T.; Hou, W. -S.; Hsu, C. -L.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jang, E. -J.; Jia, S.; Jin, Y.; Kaliyar, A. B.; Kang, K. H.; Kim, C. H.; Kim, D. Y.; Kim, K. -H.; Kim, Y. -K.; Kinoshita, K.; Kodys, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Krizan, P.; Krokovny, P.; Kumar, M.; Kumar, R.; Kumara, K.; Kuzmin, A.; Kwon, Y. -J.; Lam, T.; Lange, J. S.; Laurenza, M.; Lee, S. C.; Levit, D.; Li, J.; Li, L. K.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; Liventsev, D.; Martini, A.; Masuda, M.; Matvienko, D.; Meier, F.; Merola, M.; Metzner, F.; Mizuk, R.; Mohanty, G. B.; Moon, T. J.; Mrvar, M.; Mussa, R.; Nakao, M.; Natochii, A.; Nayak, L.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, H.; Park, S. -H.; Passeri, A.; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Prencipe, E.; Prim, M. T.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Sharma, C.; Shen, C. P.; Shiu, J. -g.; Singh, J. B.; Sokolov, A.; Solovieva, E.; Staric, M.; Stottler, Z. S.; Strube, J. F.; Sumihama, M.; Sumisawa, K.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uglov, T.; Unno, Y.; Uno, K.; Uno, S.; Urquijo, P.; van Tonder, R.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vossen, A.; Waheed, E.; Wang, C. H.; Wang, X. L.; Watanabe, M.; Watanuki, S.; Won, E.; Yabsley, B. D.; Yan, W.; Yang, S. B.; Ye, H.; Yelton, J.; Zhai, Y.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Belle Collaboration
- Issue Date
- May-2023
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.130, no.18
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 130
- Number
- 18
- ISSN
- 0031-9007
1079-7114
- Abstract
- We study B+ -> pi(+)pi(0)pi(0) using 711 fb(-1) of data collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure an inclusive branching fraction of (19.0 +/- 1.5 +/- 1.4) x 10(-6) and an inclusive CP asymmetry of (9.2 +/- 6.8 +/- 0.7)%, where the first uncertainties are statistical and the second are systematic, and a B+ -> rho(770)(+)pi(0) branching fraction of (11.2 +/- 1.1 +/- 0.9(-1.6)(+0.8)) x 10(-6), where the third uncertainty is due to possible interference with B+ ->rho(1450)(+)pi(0). We present the first observation of a structure around 1 GeV/c(2) in the pi(0)pi(0) mass spectrum, with a significance of 6.4 sigma, and measure a branching fraction to be (6.9 +/- 0.9 +/- 0.6) x 10(-6). We also report a measurement of local CP asymmetry in this structure.
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Related Researcher
- Kim, D. Y.
- College of Natural Sciences (Department of Physics)