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Search for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sample

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arxiv 1504.05831 v1 pith:HTGD5XG3 submitted 2015-04-22 hep-ex

Search for B+ -> l+ nu gamma decays 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
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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 A. Bondar G. Bonvicini A. Bozek M. Bra\v{c}ko T. E. Browder D. \v{C}ervenkov A. Chen B. G. Cheon K. Cho V. Chobanova Y. Choi D. Cinabro M. Danilov Z. Dole\v{z}al Z. Dr\'asal 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. Haba K. Hayasaka X. H. He T. Horiguchi W.-S. Hou 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. Kody\v{s} S. Korpar P. Kri\v{z}an 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. Pes\'antez R. Pestotnik M. Petri\v{c} L. E. Piilonen E. Ribe\v{z}l 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. Stari\v{c} 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
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classification hep-ex
keywords gammabelledecaysearchdatafullhadronicasymmetric-energy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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+ -> mu+ nu gamma) < 3.4 x 10^-6, and BR(B+ -> l+ nu gamma) < 3.5 x 10^-6 at 90 % credibility level.

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