Study of exclusive B→Xuℓν decays and extraction of |Vub| using full reconstruction tagging at the Belle experimentopen access
- Authors
- Sibidanov, A; Varvell, KE; Adachi, I; Aihara, H; Asner, DM; Aulchenko, V; Aushev, T; Bakich, AM; Bala, A; Bozek, A; Bracko, M; Browder, TE; Chekelian, V; Chen, P; Cheon, Byung Gu; Chilikin, K; Chistov, R; Cho, IS; Cho, K; Chobanova, V; Choi, Y; Cinabro, D; Dalseno, J; Danilov, M; Dingfelder, J; Dolezal, Z; Drasal, Z; Drutskoy, A; Dutta, D; Eidelman, S; Epifanov, D; Farhat, H; Fast, JE; Ferber, T; Frey, A; Gaur, V; Ganguly, S; Gillard, R; Goh, YM; Golob, B; Haba, J; Hayashii, H; Hoshi, Y; Hou, WS; Hyun, HJ; Iijima, T; Ishikawa, A; Itoh, R; Iwasaki, Y; Julius, T; Kah, DH; Kang, JH; Kawasaki, T; Kiesling, C; Kim, DY; Kim, HJ; Kim, JB; Kim, JH; Kim, KT; Kim, YJ; Klucar, J; Ko, BR; Kodys, P; Korpar, S; Krizan, P; Krokovny, P; Kronenbitter, B; Kuhr, T; Kuzmin, A; Kwon, YJ; Lee, SH; Li, J; Li, Y; Libby, J; Liu, Y; Liventsev, D; Lukin, P; Matvienko, D; Miyabayashi, K; Miyata, H; Mohanty, GB; Moll, A; Mussa, R; Nagasaka, Y; Nakano, E; Nakao, M; Natkaniec, Z; Nayak, M; Nedelkovska, E; Ng, C; Nisar, NK; Nishida, S; Nitoh, O; Nozaki, T; Ogawa, S; Okuno, S; Olsen, SL; Oswald, C; Park, H; Park, HK; Pedlar, TK; Pestotnik, R; Petric, M; Piilonen, LE; Ritter, M; Rohrken, M; Rostomyan, A; Ryu, S; Sahoo, H; Saito, T; Sakai, Y; Sandilya, S; Santelj, L; Sanuki, T; Sato, Y; Savinov, V; Schneider, O; Schnell, G; Schwanda, C; Senyo, K; Seon, O; Sevior, ME; Shapkin, M; Shebalin, V; Shen, CP; Shibata, TA; Shiu, JG; Simon, F; Smerkol, P; Sohn, YS; Solovieva, E; Stanic, S; Staric, M; Steder, M; Sumihama, M; Sumisawa, K; Sumiyoshi, T; Tatishvili, G; Teramoto, Y; Trabelsi, K; Tsuboyama, T; Uchida, M; Uehara, S; Uglov, T; Unno, Y; Uno, S; Urquijo, P; Ushiroda, Y; Vahsen, SE; Van Hulse, C; Vanhoefer, P; Varner, G; Vorobyev, V; Wagner, MN; Wang, CH; Wang, P; Watanabe, M; Watanabe, Y; Williams, KM; Won, E; Yabsley, BD; Yamashita, Y; Yashchenko, S; Yook, Y; Zhang, ZP; Zhilich, V; Zhulanov, V; Zupanc, A
- Issue Date
- Aug-2013
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.88, pp.1 - 25
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 88
- Start Page
- 1
- End Page
- 25
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143697
- DOI
- 10.1103/PhysRevD.88.032005
- ISSN
- 1550-7998
- Abstract
- We report the results of a study of the exclusive semileptonic decays B- -> pi(0)l(-)(v) over bar (l), (B) over bar (0) -> pi(+)l(-)(v) over bar (l), B- -> rho(0)l(-)(v) over bar (l), (B) over bar (0) -> rho+l(-)(v) over bar (l) and B- -> omega l(-)(v) over bar (l), 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 ''B(B- -> pi(0)l(-)(v) over bar (l)) = (0.80 +/- 0.08 +/- 0.04 x 10(-4), B((B) over bar (0) -> pi(0)l(-)(v) over bar (l)) = (1.49 +/- 0.09 +/- 0.07) x 10(-4), B(B- -> rho(0)l(-)(v) over bar (l)) = 1.83 +/- 0.10 +/- 0.10 x 10(-4), B((B) over bar (0) -> rho(0)l(-)(v) over bar (l) 3.22 +/- 0.27 +/- 0.24) x 10(-4), and B(B- -> omega l(-)(v) over bar (l)) = 1.07 +/- 0.16 +/- 0.07) x 10(-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(v))(2), where p(l) and p(v) are the lepton and neutrino 4-momenta, respectively. Using the pion modes, a recent light cone sum rule calculation, latticeQCDresults and a model-independent description of the hadronic form factor, a value of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar (3.52 +/- 0.29) x 10(-3) is extracted. A structure in the two-pion invariant mass distribution near 1.3 GeV/c(2), which might be dominated by the decay B- -> f(2)(1270)l(-)(v) over bar (l), f(2) -> pi(+)pi(-), is seen. These results are obtained from a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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