Study of Exclusive B-&gt;X_u l nu Decays and Extraction of |V_{ub}| using Full Reconstruction Tagging at the Belle Experiment
Creators: name: Belle Collaboration
name: Sibidanov, A.
name: Varvell, K. E.
name: Adachi, I.
name: Aihara, H.
name: Asner, D. M.
name: Aulchenko, V.
name: Aushev, T.
name: Bakich, A. M.
name: Bala, A.
name: Bozek, A.
name: Bračko, M.
name: Browder, T. E.
name: Chekelian, V.
name: Chen, P.
name: Cheon, B. G.
name: Chilikin, K.
name: Chistov, R.
name: Cho, I. -S.
name: Cho, K.
name: Chobanova, V.
name: Choi, Y.
name: Cinabro, D.
name: Dalseno, J.
name: Danilov, M.
name: Dingfelder, J.
name: Doležal, Z.
name: Drásal, Z.
name: Drutskoy, A.
name: Dutta, D.
name: Eidelman, S.
name: Epifanov, D.
name: Farhat, H.
name: Fast, J. E.
name: Ferber, T.
name: Frey, A.
name: Gaur, V.
name: Ganguly, S.
name: Gillard, R.
name: Goh, Y. M.
name: Golob, B.
name: Haba, J.
name: Hayashii, H.
name: Hoshi, Y.
name: Hou, W. -S.
name: Hyun, H. J.
name: Iijima, T.
name: Ishikawa, A.
name: Itoh, R.
name: Iwasaki, Y.
name: Julius, T.
name: Kah, D. H.
name: Kang, J. H.
name: Kawasaki, T.
name: Kiesling, C.
name: Kim, D. Y.
name: Kim, H. J.
name: Kim, J. B.
name: Kim, J. H.
name: Kim, K. T.
name: Kim, Y. J.
name: Klucar, J.
name: Ko, B. R.
name: Kodyš, P.
name: Korpar, S.
name: Križan, P.
name: Krokovny, P.
name: Kronenbitter, B.
name: Kuhr, T.
name: Kuzmin, A.
name: Kwon, Y. -J.
name: Lee, S. -H.
name: Li, J.
name: Li, Y.
name: Libby, J.
name: Liu, Y.
name: Liventsev, D.
name: Lukin, P.
name: Matvienko, D.
name: Miyabayashi, K.
name: Miyata, H.
name: Mohanty, G. B.
name: Moll, A.
name: Mussa, R.
name: Nagasaka, Y.
name: Nakano, E.
name: Nakao, M.
name: Natkaniec, Z.
name: Nayak, M.
name: Nedelkovska, E.
name: Ng, C.
name: Nisar, N. K.
name: Nishida, S.
name: Nitoh, O.
name: Nozaki, T.
name: Ogawa, S.
name: Okuno, S.
name: Olsen, S. L.
name: Oswald, C.
name: Park, H.
name: Park, H. K.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Ritter, M.
name: Röhrken, M.
name: Rostomyan, A.
name: Ryu, S.
name: Sahoo, H.
name: Saito, T.
name: Sakai, Y.
name: Sandilya, S.
name: Santelj, L.
name: Sanuki, T.
name: Sato, Y.
name: Savinov, V.
name: Schneider, O.
name: Schnell, G.
name: Schwanda, C.
name: Senyo, K.
name: Seon, O.
name: Sevior, M. E.
name: Shapkin, M.
name: Shebalin, V.
name: Shen, C. P.
name: Shibata, T. -A.
name: Shiu, J. -G.
name: Simon, F.
name: Smerkol, P.
name: Sohn, Y. -S.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Steder, M.
name: Sumihama, M.
name: Sumisawa, K.
name: Sumiyoshi, T.
name: Tatishvili, G.
name: Teramoto, Y.
name: Trabelsi, K.
name: Tsuboyama, T.
name: Uchida, M.
name: Uehara, S.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Ushiroda, Y.
name: Vahsen, S. E.
name: Van Hulse, C.
name: Vanhoefer, P.
name: Varner, G.
name: Vorobyev, V.
name: Wagner, M. N.
name: Wang, C. H.
name: Wang, P.
name: Watanabe, M.
name: Watanabe, Y.
name: Williams, K. M.
name: Won, E.
name: Yabsley, B. D.
name: Yamashita, Y.
name: Yashchenko, S.
name: Yook, Y.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report the results of a study of the exclusive semileptonic decays B-&gt;pi0lnu, B-&gt;pi+lnu, B-&gt;rho0lnu, B-&gt;rho+lnu and B-&gt;omegalnu, where l represents an electron or a muon. The events are tagged by fully reconstructing a second B meson in the event in a hadronic decay mode. The measured branching fractions are Br(B-&gt;pi0lnu) = (0.80 +- 0.08 +- 0.04)x10^-4, Br(B-&gt;pi+lnu) = (1.49 +- 0.09 +- 0.07)x10^-4, Br(B-&gt;rho0lnu) = (1.83 +- 0.10 +- 0.10)x10^-4, Br(B-&gt;rho+lnu) = (3.22 +- 0.27 +- 0.24)x10^-4, and Br(B-&gt;omegalnu) =(1.07 +- 0.16 +- 0.07)x10^-4, where the first error is statistical and the second one is systematic. The obtained branching fractions are inclusive of soft photon emission. We also determine the branching fractions as a function of the 4-momentum transfer squared to the leptonic system q^2=(p_l+p_nu)^2, where p_l and p_nu are the lepton and neutrino 4-momenta, respectively. Using the pion modes, a recent LCSR calculation, lattice QCD results and a model-independent description of the hadronic form factor, a value of the CKM matrix element |V_{ub}| = (3.52 +- 0.29)x10^-3 is extracted. For the first time, a charmless state with invariant mass greater than 1 GeV/c^2, which might be dominated by the decay B-&gt;f2lnu, is observed. These results are obtained from a 711 1/fb data sample that contains 772 millions BB pairs, collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+ e^- collider.
description: To be submitted to PRD