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Search forB+→ℓ+νℓγdecays with hadronic tagging using the full Belle data sample

A. Heller, P. Goldenzweig, M. Heck, T. Kuhr, A. Zupanc, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko (+157 others)
2015 Physical Review D  

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2015 pre-print
arXiv:1504.05831v1 fatcat:dko4vnqbcjakrbdai4ynpiblhe
We search for the decay B+ -> l+ nu gamma with l+ = e+ or mu+ using the full Belle data set of 772 x 10^6 BBbar pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one B meson in a hadronic decay mode and search for the B+ -> l+ nu gamma decay in the remainder of the event. We observe no significant signal within the phase space of E_gamma^sig > 1 GeV and obtain upper limits of BR(B+ -> e+ nu gamma) < 6.1 x 10^-6, BR(B+ ->
more » ... u+ nu gamma) < 3.4 x 10^-6, and BR(B+ -> l+ nu gamma) < 3.5 x 10^-6 at 90 % credibility level.
doi:10.1103/physrevd.91.112009 fatcat:kpywzunfbbeyho4teeh7jealae
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A. Heller, P. Goldenzweig, M. Heck, T. Kuhr, A. Zupanc, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Grygier, J. Haba, K. Hayasaka, X. H. He, M. Heider, T. Horiguchi, W.-S. Hou, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, J. Libby, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, L. Pesántez, R. Pestotnik, M. Petrič, L. E. Piilonen, C. Pulvermacher, E. Ribežl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y.-S. Sohn, A. Sokolov, M. Starič, M. Steder, J. Stypula, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, M.-Z. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich. "Search forB+→ℓ+νℓγdecays with hadronic tagging using the full Belle data sample." Physical Review D 91.11 (2015)