del Amo Sanchez, P.Lees, J. P.Poireau, V.Prencipe, E.Tisserand, V.Garra Tico, J.Grauges, E.Martinelli, M.Palano, A.Pappagallo, M.Eigen, G.Stugu, B.Sun, L.Battaglia, M.Brown, D. N.Hooberman, B.Kerth, L. T.Kolomensky, Yu. G.Lynch, G.Osipenkov, I. L.Tanabe, T.Hawkes, C. M.Soni, N.Watson, A. T.Koch, H.Schroeder, T.Asgeirsson, D. J.Hearty, C.Mattison, T. S.McKenna, J. A.Khan, A.Randle-Conde, A.Blinov, V. E.Buzykaev, A. R.Druzhinin, V. P.Golubev, V. B.Onuchin, A. P.Serednyakov, S. I.Skovpen, Yu. I.Solodov, E. P.Todyshev, K. Yu.Yushkov, A. N.Bondioli, M.Curry, S.Kirkby, D.Lankford, A. J.Mandelkern, M.Martin, E. C.Stoker, D. P.Atmacan, H.Gary, J. W.Liu, F.Long, O.Vitug, G. M.Yasin, Z.Sharma, V.Campagnari, C.Hong, T. M.Kovalskyi, D.Richman, J. D.Eisner, A. M.Heusch, C. A.Kroseberg, J.Lockman, W. S.Martinez, A. J.Schalk, T.Schumm, B. A.Seiden, A.Winstrom, L. O.Cheng, C. H.Doll, D. A.Echenard, B.Hitlin, D. G.Ongmongkolkul, P.Porter, F. C.Rakitin, A. Y.Andreassen, R.Dubrovin, M. S.Mancinelli, G.Meadows, B. T.Sokoloff, M. D.Bloom, P. C.Ford, W. T.Gaz, A.Hirschauer, J. F.Nagel, M.Nauenberg, U.Smith, J. G.Wagner, S. R.Ayad, R.Toki, W. H.Hauke, A.Jasper, H.Karbach, T. M.Merkel, J.Petzold, A.Spaan, B.Wacker, K.Kobel, M. J.Schubert, K. R.Schwierz, R.Bernard, D.Verderi, M.Clark, P. J.Playfer, S.Watson, J. E.Andreotti, M.Bettoni, D.Bozzi, C.Calabrese, R.Cecchi, A.Cibinetto, G.Fioravanti, E.Franchini, P.Luppi, E.Munerato, M.Negrini, M.Petrella, A.Piemontese, L.Baldini-Ferroli, R.Calcaterra, A.de Sangro, R.Finocchiaro, G.Nicolaci, M.Pacetti, S.Patteri, P.Peruzzi, I. M.Piccolo, M.Rama, M.Zallo, A.Contri, R.Guido, E.Lo Vetere, M.Monge, M. R.Passaggio, S.Patrignani, C.Robutti, E.Tosi, S.Bhuyan, B.Morii, MasahiroAdametz, A.Marks, J.Schenk, S.Uwer, U.Bernlochner, F. U.Lacker, H. M.Lueck, T.Volk, A.Dauncey, P. D.Tibbetts, M.Behera, P. K.Mallik, U.Chen, C.Cochran, J.Crawley, H. B.Dong, L.Meyer, W. T.Prell, S.Rosenberg, E. I.Rubin, A. E.Gao, Y. Y.Gritsan, A. V.Guo, Z. J.Arnaud, N.Davier, M.Derkach, D.Firmino da Costa, J.Grosdidier, G.Le Diberder, F.Lutz, A. M.Malaescu, B.Perez, A.Roudeau, P.Schune, M. H.Serrano, J.Sordini, V.Stocchi, A.Wang, L.Wormser, G.Lange, D. J.Wright, D. M.Bingham, I.Burke, J. P.Chavez, C. A.Coleman, J. P.Fry, J. R.Gabathuler, E.Gamet, R.Hutchcroft, D. E.Payne, D. J.Touramanis, C.Bevan, A. J.Di Lodovico, F.Sacco, R.Sigamani, M.Cowan, G.Paramesvaran, S.Wren, A. C.Davis, C. L.Denig, A. G.Fritsch, M.Gradl, W.Hafner, A.Alwyn, K. E.Bailey, D.Barlow, R. J.Jackson, G.Lafferty, G. D.West, T. J.Anderson, J.Cenci, R.Jawahery, A.Roberts, D. A.Simi, G.Tuggle, J. M.Dallapiccola, C.Salvati, E.Cowan, R.Dujmic, D.Fisher, P. H.Sciolla, GabriellaYamamoto, R. K.Zhao, M.Patel, P. M.Robertson, S. H.Schram, M.Biassoni, P.Lazzaro, A.Lombardo, V.Palombo, F.Stracka, S.Cremaldi, L.Godang, R.Kroeger, R.Sonnek, P.Summers, D. J.Zhao, H. W.Nguyen, X.Simard, M.Taras, P.De Nardo, G.Monorchio, D.Onorato, G.Sciacca, C.Raven, G.Snoek, H. L.Jessop, C. P.Knoepfel, K. J.LoSecco, J. M.Wang, W. F.Corwin, L. A.Honscheid, K.Kass, R.Morris, J. P.Rahimi, A. M.Blount, N. L.Brau, J.Frey, R.Igonkina, O.Kolb, J. A.Rahmat, R.Sinev, N. B.Strom, D.Strube, J.Torrence, E.Castelli, G.Feltresi, E.Gagliardi, N.Margoni, M.Morandin, M.Posocco, M.Rotondo, M.Simonetto, F.Stroili, R.Ben-Haim, E.Bonneaud, G. R.Briand, H.Chauveau, J.Hamon, O.Leruste, Ph.Marchiori, G.Ocariz, J.Prendki, J.Sitt, S.Biasini, M.Manoni, E.Angelini, C.Batignani, G.Bettarini, S.Calderini, G.Carpinelli, M.Cervelli, A.Forti, F.Giorgi, M. A.Lusiani, A.Neri, N.Paoloni, E.Rizzo, G.Walsh, J. J.Lopes Pegna, D.Lu, C.Olsen, J.Smith, A. J. S.Telnov, A. V.Anulli, F.Baracchini, E.Cavoto, G.Faccini, R.Ferrarotto, F.Ferroni, F.Gaspero, M.Li Gioi, L.Mazzoni, M. A.Piredda, G.Renga, F.Ebert, M.Hartmann, T.Leddig, T.Schröder, H.Waldi, R.Adye, T.Franek, B.Olaiya, E. O.Wilson, F. F.Emery, S.Hamel de Monchenault, G.Vasseur, G.Yèche, Ch.Zito, M.Allen, M. T.Aston, D.Bard, D. J.Bartoldus, R.Benitez, J. F.Cartaro, C.Convery, M. R.Dingfelder, J. C.Dorfan, J.Dubois-Felsmann, G. P.Dunwoodie, W.Field, R. C.Franco Sevilla, M.Fulsom, B. G.Gabareen, A. M.Graham, M. T.Grenier, P.Hast, C.Innes, W. R.Kelsey, M. H.Kim, H.Kim, P.Kocian, M. L.Leith, D. W. G. S.Li, S.Lindquist, B.Luitz, S.Luth, V.Lynch, H. L.MacFarlane, D. B.Marsiske, H.Muller, D. R.Neal, H.Nelson, S.O’Grady, C. P.Ofte, I.Perl, M.Ratcliff, B. N.Roodman, A.Salnikov, A. A.Santoro, V.Schindler, R. H.Schwiening, J.Snyder, A.Su, D.Sullivan, M. K.Suzuki, K.Thompson, J. M.Va’vra, J.Wagner, A. P.Weaver, M.West, C. A.Wisniewski, W. J.Wittgen, M.Wright, D. H.Wulsin, H. W.Yarritu, A. K.Young, C. C.Ziegler, V.Chen, X. R.Park, W.Purohit, M. V.White, R. M.Wilson, J. R.Sekula, S. J.Bellis, M.Burchat, P. R.Edwards, A. J.Miyashita, T. S.Ahmed, S.Alam, M. S.Ernst, J. A.Pan, B.Saeed, M. A.Zain, S. B.Guttman, N.Soffer, A.Lund, P.Spanier, S. M.Eckmann, R.Ritchie, J. L.Ruland, A. M.Schilling, C. J.Schwitters, R. F.Wray, B. C.Izen, J. M.Lou, X. C.Bianchi, F.Gamba, D.Pelliccioni, M.Bomben, M.Della Ricca, G.Lanceri, L.Vitale, L.Azzolini, V.Lopez-March, N.Martinez-Vidal, F.Milanes, D. A.Oyanguren, A.Albert, J.Banerjee, Sw.Choi, H. H. F.Hamano, K.King, G. J.Kowalewski, R.Lewczuk, M. J.Nugent, I. M.Roney, J. M.Sobie, R. J.Gershon, T. J.Harrison, P. F.Ilic, J.Latham, T. E.Mohanty, G. B.Puccio, E. M. T.Band, H. R.Chen, X.Dasu, S.Flood, K. T.Pan, Y.Prepost, R.Vuosalo, C. O.Wu, S. L.2014-12-232011Del Amo Sanchez, P., J. P. Lees, V. Poireau, E. Prencipe, V. Tisserand, J. Garra Tico, E. Grauges, et al. 2011. Study of \(B→πlν\) and \(B→ρlν\) Decays and Determination of \(|V_{ub}|\). Physical Review D 83, no. 3: 032007.1550-79981550-2368http://nrs.harvard.edu/urn-3:HUL.InstRepos:13579265We present an analysis of exclusive charmless semileptonic B-meson decays based on \(377×10^{6} B\overline{B}\) pairs recorded with the BABAR detector at the \(Υ(4S)\) resonance. We select four event samples corresponding to the decay modes \(B^{0}→π^{−}ℓ^{+}ν\), \(B^{+}→π^{0}ℓ^{+}ν\), \(B^{0}→ρ^{−}ℓ^{+}ν\), and \(B^{+}→ρ^{0}ℓ^{+}ν\) and find the measured branching fractions to be consistent with isospin symmetry. Assuming isospin symmetry, we combine the two \(B→πℓν\) samples, and similarly the two \(B→ρℓν\) samples, and measure the branching fractions \(ℬ(B^{0}→π^{−}ℓ^{+}ν)=(1.41±0.05±0.07)×10^{−4}\) and \(ℬ(B^{0}→ρ^{−}ℓ^{+}ν)=(1.75±0.15±0.27)×10^{−4}\), where the errors are statistical and systematic. We compare the measured distribution in \(q^2\), the momentum transfer squared, with predictions for the form factors from QCD calculations and determine the Cabibbo-Kobayashi-Maskawa matrix element \(|V_{ub}|\). Based on the measured partial branching fraction for \(B→πℓν\) in the range \(q^{2}<12 GeV^{2}\) and the most recent QCD light-cone sum-rule calculations, we obtain \(|V_{ub}|=(3.78±0.13^{+0.55}_{−0.40})×10^{−3}\), where the errors refer to the experimental and theoretical uncertainties. From a simultaneous fit to the data over the full \(q^2\) range and the FNAL/MILC lattice QCD results, we obtain \(|V_{ub}|=(2.95±0.31)×10^{−3}\) from \(B→πℓν\), where the error is the combined experimental and theoretical uncertainty.en-USJournal Article2014-12-2310.1103/PhysRevD.83.032007