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Measurement of the decay B-0 -> pi(-) l(+) nu and determination of vertical bar V-ub vertical bar

Authors
Ha, H.Won, E.Adachi, I.Aihara, H.Aziz, T.Bakich, A. M.Balagura, V.Barberio, E.Bay, A.Belous, K.Bhardwaj, V.Bhuyan, B.Bischofberger, M.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chao, Y.Chen, A.Chen, P.Cheon, B. G.Chiang, C. -C.Cho, I. -S.Cho, K.Choi, K. -S.Choi, Y.Dalseno, J.Danilov, M.Dolezal, Z.Drutskoy, A.Dungel, W.Eidelman, S.Gabyshev, N.Golob, B.Haba, J.Hayasaka, K.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hsiung, Y. B.Hyun, H. J.Iijima, T.Inami, K.Itoh, R.Iwabuchi, M.Iwasaki, Y.Joshi, N. J.Julius, T.Kang, J. H.Kawasaki, T.Kiesling, C.Kim, H. J.Kim, H. O.Kim, M. J.Kim, S. K.Kim, Y. J.Kinoshita, K.Ko, B. R.Korpar, S.Krizan, P.Kuhr, T.Kumita, T.Kuzmin, A.Kwon, Y. -J.Kyeong, S. -H.Lange, J. S.Lee, M. J.Lee, S. -H.Li, Y.Limosani, A.Liu, C.Liu, Y.Liventsev, D.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mohanty, G. B.Mori, T.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Neubauer, S.Nishida, S.Nishimura, K.Nitoh, O.Nozaki, T.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Petri, M.Piilonen, L. E.Roehrken, M.Ryu, S.Sahoo, H.Sakai, Y.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shiu, J. -G.Simon, F.Smerkol, P.Sohn, Y. -S.Sokolov, A.Stanic, S.Staric, M.Sumiyoshi, T.Teramoto, Y.Trabelsi, K.Uehara, S.Uglov, T.Unno, Y.Uno, S.Vahsen, S. E.Varner, G.Varvell, K. E.Vossen, A.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, M.Watanabe, Y.Yamashita, Y.Zhang, Z. P.Zhou, P.Zhulanov, V.Zivko, T.Zupanc, A.
Issue Date
1-4월-2011
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.83, no.7
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
83
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/112689
DOI
10.1103/PhysRevD.83.071101
ISSN
1550-7998
Abstract
We present a measurement of the charmless semileptonic decay B-0 -> pi(-) l(+) nu using a data sample containing 657 x 10(6) B (B) over bar events collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating near the Y(4S) resonance. We determine the total branching fraction of the decay, B(B-0 -> pi(-) l(+) nu) = (1.49 +/- 0.04(stat) +/- 0.07(syst)) x 10(-)4. We also report a new precise measurement of the differential decay rate and extract the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar using model-independent and model-dependent approaches. From a simultaneous fit to the measured differential decay rate and lattice QCD results, we obtain vertical bar V-ub vertical bar (3.43 +/- 0: 33) x 10(-3), where the error includes both experimental and theoretical uncertainties.
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