Measurement of the B^{0}→π^{-}ℓ^{+}ν and B^{+}→η^{(′)}ℓ^{+}ν branching fractions, the B^{0}→π^{-}ℓ^{+}ν and B^{+}→ηℓ^{+}ν form-factor shapes, and determination of |V_{ub}|

del Amo Sanchez, P.; Lees, J.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Brown, D.; Kerth, L.; Kolomensky, Y.; Lynch, G.; Osipenkov, I.; Koch, H.; Schroeder, T.; Asgeirsson, D.; Hearty, C.; Mattison, T.; Mckenna, J.; Khan, A.; Randle Conde, A.; Blinov, V.; Buzykaev, A.; Druzhinin, V.; Golubev, V.; Kravchenko, E.; Onuchin, A.; Serednyakov, S.; Skovpen, Y.; Solodov, E.; Todyshev, K.; Yushkov, A.; Bondioli, M.; Curry, S.; Kirkby, D.; Lankford, A.; Mandelkern, M.; Martin, E.; Stoker, D.; Atmacan, H.; Gary, J.; Liu, F.; Long, O.; Vitug, G.; Campagnari, C.; Hong, T.; Kovalskyi, D.; Richman, J.; West, C.; Eisner, A.; Heusch, C.; Kroseberg, J.; Lockman, W.; Martinez, A.; Schalk, T.; Schumm, B.; Seiden, A.; Winstrom, L.; Cheng, C.; Doll, D.; Echenard, B.; Hitlin, D.; Ongmongkolkul, P.; Porter, F.; Rakitin, A.; Andreassen, R.; Dubrovin, M.; Mancinelli, G.; Meadows, B.; Sokoloff, M.; Bloom, P.; Ford, W.; Gaz, A.; Nagel, M.; Nauenberg, U.; Smith, J.; Wagner, S.; Ayad, R.; Toki, W.; Jasper, H.; Karbach, T.; Petzold, A.; Spaan, B.; Kobel, M.; Schubert, K.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P.; Playfer, S.; Watson, J.; 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.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.; Bhuyan, B.; Prasad, V.; Lee, C.; Morii, M.; Adametz, A.; Marks, J.; Uwer, U.; Bernlochner, F.; Ebert, M.; Lacker, H.; Lueck, T.; Volk, A.; Dauncey, P.; Tibbetts, M.; Behera, P.; Mallik, U.; Chen, C.; Cochran, J.; Crawley, H.; Dong, L.; Meyer, W.; Prell, S.; Rosenberg, E.; Rubin, A.; Gritsan, A.; Guo, Z.; Arnaud, N.; Davier, M.; Derkach, D.; Firmino da Costa, J.; Grosdidier, G.; Le Diberder, F.; Lutz, A.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.; Lange, D.; Wright, D.; Bingham, I.; Chavez, C.; Coleman, J.; Fry, J.; Gabathuler, E.; Gamet, R.; Hutchcroft, D.; Payne, D.; Touramanis, C.; Bevan, A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.; Paramesvaran, S.; Wren, A.; Brown, D.; Davis, C.; Denig, A.; Fritsch, M.; Gradl, W.; Hafner, A.; Alwyn, K.; Bailey, D.; Barlow, R.; Jackson, G.; Lafferty, G.; Anderson, J.; Cenci, R.; Jawahery, A.; Roberts, D.; Simi, G.; Tuggle, J.; Dallapiccola, C.; Salvati, E.; Cowan, R.; Dujmic, D.; Sciolla, G.; Zhao, M.; Lindemann, D.; Patel, P.; Robertson, S.; Schram, M.; Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D.; Nguyen, X.; Simard, M.; Taras, P.; De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.; Raven, G.; Snoek, H.; Jessop, C.; Knoepfel, K.; Losecco, J.; Wang, W.; Corwin, L.; Honscheid, K.; Kass, R.; Morris, J.; Blount, N.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J.; Rahmat, R.; Sinev, N.; 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.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, P.; Marchiori, G.; Ocariz, J.; Prendki, J.; Sitt, S.; Biasini, M.; Manoni, E.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J.; Lopes Pegna, D.; Lu, C.; Olsen, J.; Smith, A.; Telnov, A.; Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Mazzoni, M.; Piredda, G.; Renga, F.; Hartmann, T.; Leddig, T.; Schröder, H.; Waldi, R.; Adye, T.; Franek, B.; Olaiya, E.; Wilson, F.; Emery, S.; Hamel de Monchenault, G.; Vasseur, G.; Yèche, C.; Zito, M.; Allen, M.; Aston, D.; Bard, D.; Bartoldus, R.; Benitez, J.; Cartaro, C.; Convery, M.; Dorfan, J.; Dubois Felsmann, G.; Dunwoodie, W.; Field, R.; Franco Sevilla, M.; Fulsom, B.; Gabareen, A.; Graham, M.; Grenier, P.; Hast, C.; Innes, W.; Kelsey, M.; Kim, H.; Kim, P.; Kocian, M.; Leith, D.; Li, S.; Lindquist, B.; Luitz, S.; Lynch, H.; Macfarlane, D.; Marsiske, H.; Muller, D.; Neal, H.; Nelson, S.; O’Grady, C.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B.; Roodman, A.; Salnikov, A.; Santoro, V.; Schindler, R.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M.; Sun, S.; Suzuki, K.; Thompson, J.; Va’Vra, J.; Wagner, A.; Weaver, M.; Wisniewski, W.; Wittgen, M.; Wright, D.; Wulsin, H.; Yarritu, A.; Young, C.; Ziegler, V.; Chen, X.; Park, W.; Purohit, M.; White, R.; Wilson, J.; Sekula, S.; Bellis, M.; Burchat, P.; Edwards, A.; Miyashita, T.; Ahmed, S.; Alam, M.; Ernst, J.; Pan, B.; Saeed, M.; Zain, S.; Guttman, N.; Soffer, A.; Lund, P.; Spanier, S.; Eckmann, R.; Ritchie, J.; Ruland, A.; Schilling, C.; Schwitters, R.; Wray, B.; Izen, J.; Lou, X.; Bianchi, F.; Gamba, D.; Pelliccioni, M.; Bomben, M.; Lanceri, L.; Vitale, L.; Lopez March, N.; Martinez Vidal, F.; Oyanguren, A.; Albert, J.; Banerjee, S.; Choi, H.; Hamano, K.; King, G.; Kowalewski, R.; Lewczuk, M.; Lindsay, C.; Nugent, I.; Roney, J.; Sobie, R.; Gershon, T.; Harrison, P.; Latham, T.; Puccio, E.; Band, H.; Dasu, S.; Flood, K.; Pan, Y.; Prepost, R.; Vuosalo, C.; Wu, S.

doi:10.1103/PhysRevD.83.052011

We report the results of a study of the exclusive charmless semileptonic decays, B+→η(′)ℓ+ν and B0→π-ℓ+ν, undertaken with approximately 464×106 BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B+→ηℓ+ν and B0→π-ℓ+ν decays in three and 12 bins of q2, respectively, from which we extract the f+(q2) form-factor shapes and the total branching fractions B(B+→ηℓ+ν)=(0.36±0.05stat±0.04syst)×10-4 and B(B0→π-ℓ+ν)=(1.42±0.05stat±0.07syst)×10-4. We also measure B(B+→η′ℓ+ν)=(0.24±0.08stat±0.03syst)×10-4. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations.

Measurement of the B^{0}→π^{-}ℓ^{+}ν and B^{+}→η^{(′)}ℓ^{+}ν branching fractions, the B^{0}→π^{-}ℓ^{+}ν and B^{+}→ηℓ^{+}ν form-factor shapes, and determination of |V_{ub}| / P. del Amo Sanchez, J. Lees, V. Poireau, E. Prencipe, V. Tisserand, J. Garra Tico, E. Grauges, M. Martinelli, D. Milanes, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, D. Brown, L. Kerth, Y. Kolomensky, G. Lynch, I. Osipenkov, H. Koch, T. Schroeder, D. Asgeirsson, C. Hearty, T. Mattison, J. Mckenna, A. Khan, A. Randle Conde, V. Blinov, A. Buzykaev, V. Druzhinin, V. Golubev, E. Kravchenko, A. Onuchin, S. Serednyakov, Y. Skovpen, E. Solodov, K. Todyshev, A. Yushkov, M. Bondioli, S. Curry, D. Kirkby, A. Lankford, M. Mandelkern, E. Martin, D. Stoker, H. Atmacan, J. Gary, F. Liu, O. Long, G. Vitug, C. Campagnari, T. Hong, D. Kovalskyi, J. Richman, C. West, A. Eisner, C. Heusch, J. Kroseberg, W. Lockman, A. Martinez, T. Schalk, B. Schumm, A. Seiden, L. Winstrom, C. Cheng, D. Doll, B. Echenard, D. Hitlin, P. Ongmongkolkul, F. Porter, A. Rakitin, R. Andreassen, M. Dubrovin, G. Mancinelli, B. Meadows, M. Sokoloff, P. Bloom, W. Ford, A. Gaz, M. Nagel, U. Nauenberg, J. Smith, S. Wagner, R. Ayad, W. Toki, H. Jasper, T. Karbach, A. Petzold, B. Spaan, M. Kobel, K. Schubert, R. Schwierz, D. Bernard, M. Verderi, P. Clark, S. Playfer, J. Watson, M. Andreotti, D. Bettoni, C. Bozzi, R. Calabrese, A. Cecchi, G. Cibinetto, E. Fioravanti, P. Franchini, E. Luppi, M. Munerato, M. Negrini, A. Petrella, L. Piemontese, R. Baldini Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, M. Nicolaci, S. Pacetti, P. Patteri, I. Peruzzi, M. Piccolo, M. Rama, A. Zallo, R. Contri, E. Guido, M. Lo Vetere, M. Monge, S. Passaggio, C. Patrignani, E. Robutti, S. Tosi, B. Bhuyan, V. Prasad, C. Lee, M. Morii, A. Adametz, J. Marks, U. Uwer, F. Bernlochner, M. Ebert, H. Lacker, T. Lueck, A. Volk, P. Dauncey, M. Tibbetts, P. Behera, U. Mallik, C. Chen, J. Cochran, H. Crawley, L. Dong, W. Meyer, S. Prell, E. Rosenberg, A. Rubin, A. Gritsan, Z. Guo, N. Arnaud, M. Davier, D. Derkach, J. Firmino da Costa, G. Grosdidier, F. Le Diberder, A. Lutz, B. Malaescu, A. Perez, P. Roudeau, M. Schune, J. Serrano, V. Sordini, A. Stocchi, L. Wang, G. Wormser, D. Lange, D. Wright, I. Bingham, C. Chavez, J. Coleman, J. Fry, E. Gabathuler, R. Gamet, D. Hutchcroft, D. Payne, C. Touramanis, A. Bevan, F. Di Lodovico, R. Sacco, M. Sigamani, G. Cowan, S. Paramesvaran, A. Wren, D. Brown, C. Davis, A. Denig, M. Fritsch, W. Gradl, A. Hafner, K. Alwyn, D. Bailey, R. Barlow, G. Jackson, G. Lafferty, J. Anderson, R. Cenci, A. Jawahery, D. Roberts, G. Simi, J. Tuggle, C. Dallapiccola, E. Salvati, R. Cowan, D. Dujmic, G. Sciolla, M. Zhao, D. Lindemann, P. Patel, S. Robertson, M. Schram, P. Biassoni, A. Lazzaro, V. Lombardo, F. Palombo, S. Stracka, L. Cremaldi, R. Godang, R. Kroeger, P. Sonnek, D. Summers, X. Nguyen, M. Simard, P. Taras, G. De Nardo, D. Monorchio, G. Onorato, C. Sciacca, G. Raven, H. Snoek, C. Jessop, K. Knoepfel, J. Losecco, W. Wang, L. Corwin, K. Honscheid, R. Kass, J. Morris, N. Blount, J. Brau, R. Frey, O. Igonkina, J. Kolb, R. Rahmat, N. Sinev, D. Strom, J. Strube, E. Torrence, G. Castelli, E. Feltresi, N. Gagliardi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, E. Ben Haim, G. Bonneaud, H. Briand, G. Calderini, J. Chauveau, O. Hamon, P. Leruste, G. Marchiori, J. Ocariz, J. Prendki, S. Sitt, M. Biasini, E. Manoni, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, F. Forti, M. Giorgi, A. Lusiani, N. Neri, E. Paoloni, G. Rizzo, J. Walsh, D. Lopes Pegna, C. Lu, J. Olsen, A. Smith, A. Telnov, F. Anulli, E. Baracchini, G. Cavoto, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M. Mazzoni, G. Piredda, F. Renga, T. Hartmann, T. Leddig, H. Schröder, R. Waldi, T. Adye, B. Franek, E. Olaiya, F. Wilson, S. Emery, G. Hamel de Monchenault, G. Vasseur, C. Yèche, M. Zito, M. Allen, D. Aston, D. Bard, R. Bartoldus, J. Benitez, C. Cartaro, M. Convery, J. Dorfan, G. Dubois Felsmann, W. Dunwoodie, R. Field, M. Franco Sevilla, B. Fulsom, A. Gabareen, M. Graham, P. Grenier, C. Hast, W. Innes, M. Kelsey, H. Kim, P. Kim, M. Kocian, D. Leith, S. Li, B. Lindquist, S. Luitz, H. Lynch, D. Macfarlane, H. Marsiske, D. Muller, H. Neal, S. Nelson, C. O’Grady, I. Ofte, M. Perl, T. Pulliam, B. Ratcliff, A. Roodman, A. Salnikov, V. Santoro, R. Schindler, J. Schwiening, A. Snyder, D. Su, M. Sullivan, S. Sun, K. Suzuki, J. Thompson, J. Va’Vra, A. Wagner, M. Weaver, W. Wisniewski, M. Wittgen, D. Wright, H. Wulsin, A. Yarritu, C. Young, V. Ziegler, X. Chen, W. Park, M. Purohit, R. White, J. Wilson, S. Sekula, M. Bellis, P. Burchat, A. Edwards, T. Miyashita, S. Ahmed, M. Alam, J. Ernst, B. Pan, M. Saeed, S. Zain, N. Guttman, A. Soffer, P. Lund, S. Spanier, R. Eckmann, J. Ritchie, A. Ruland, C. Schilling, R. Schwitters, B. Wray, J. Izen, X. Lou, F. Bianchi, D. Gamba, M. Pelliccioni, M. Bomben, L. Lanceri, L. Vitale, N. Lopez March, F. Martinez Vidal, A. Oyanguren, J. Albert, S. Banerjee, H. Choi, K. Hamano, G. King, R. Kowalewski, M. Lewczuk, C. Lindsay, I. Nugent, J. Roney, R. Sobie, T. Gershon, P. Harrison, T. Latham, E. Puccio, H. Band, S. Dasu, K. Flood, Y. Pan, R. Prepost, C. Vuosalo, S. Wu. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:5(2011), pp. 052011.052011.1-052011.052011.16. [10.1103/PhysRevD.83.052011]

Measurement of the B^{0}→π^{-}ℓ^{+}ν and B^{+}→η^{(′)}ℓ^{+}ν branching fractions, the B^{0}→π^{-}ℓ^{+}ν and B^{+}→ηℓ^{+}ν form-factor shapes, and determination of |V_{ub}|

P. del Amo Sanchez;J. Lees;V. Poireau;E. Prencipe;V. Tisserand;J. Garra Tico;E. Grauges;M. Martinelli;D. Milanes;A. Palano;M. Pappagallo;G. Eigen;B. Stugu;L. Sun;D. Brown;L. Kerth;Y. Kolomensky;G. Lynch;I. Osipenkov;H. Koch;T. Schroeder;D. Asgeirsson;C. Hearty;T. Mattison;J. McKenna;A. Khan;A. Randle Conde;V. Blinov;A. Buzykaev;V. Druzhinin;V. Golubev;E. Kravchenko;A. Onuchin;S. Serednyakov;Y. Skovpen;E. Solodov;K. Todyshev;A. Yushkov;M. Bondioli;S. Curry;D. Kirkby;A. Lankford;M. Mandelkern;E. Martin;D. Stoker;H. Atmacan;J. Gary;F. Liu;O. Long;G. Vitug;C. Campagnari;T. Hong;D. Kovalskyi;J. Richman;C. West;A. Eisner;C. Heusch;J. Kroseberg;W. Lockman;A. Martinez;T. Schalk;B. Schumm;A. Seiden;L. Winstrom;C. Cheng;D. Doll;B. Echenard;D. Hitlin;P. Ongmongkolkul;F. Porter;A. Rakitin;R. Andreassen;M. Dubrovin;G. Mancinelli;B. Meadows;M. Sokoloff;P. Bloom;W. Ford;A. Gaz;M. Nagel;U. Nauenberg;J. Smith;S. Wagner;R. Ayad;W. Toki;H. Jasper;T. Karbach;A. Petzold;B. Spaan;M. Kobel;K. Schubert;R. Schwierz;D. Bernard;M. Verderi;P. Clark;S. Playfer;J. Watson;M. Andreotti;D. Bettoni;C. Bozzi;R. Calabrese;A. Cecchi;G. Cibinetto;E. Fioravanti;P. Franchini;E. Luppi;M. Munerato;M. Negrini;A. Petrella;L. Piemontese;R. Baldini Ferroli;A. Calcaterra;R. de Sangro;G. Finocchiaro;M. Nicolaci;S. Pacetti;P. Patteri;I. Peruzzi;M. Piccolo;M. Rama;A. Zallo;R. Contri;E. Guido;M. Lo Vetere;M. Monge;S. Passaggio;C. Patrignani;E. Robutti;S. Tosi;B. Bhuyan;V. Prasad;C. Lee;M. Morii;A. Adametz;J. Marks;U. Uwer;F. Bernlochner;M. Ebert;H. Lacker;T. Lueck;A. Volk;P. Dauncey;M. Tibbetts;P. Behera;U. Mallik;C. Chen;J. Cochran;H. Crawley;L. Dong;W. Meyer;S. Prell;E. Rosenberg;A. Rubin;A. Gritsan;Z. Guo;N. Arnaud;M. Davier;D. Derkach;J. Firmino da Costa;G. Grosdidier;F. Le Diberder;A. Lutz;B. Malaescu;A. Perez;P. Roudeau;M. Schune;J. Serrano;V. Sordini;A. Stocchi;L. Wang;G. Wormser;D. Lange;D. Wright;I. Bingham;C. Chavez;J. Coleman;J. Fry;E. Gabathuler;R. Gamet;D. Hutchcroft;D. Payne;C. Touramanis;A. Bevan;F. Di Lodovico;R. Sacco;M. Sigamani;G. Cowan;S. Paramesvaran;A. Wren;D. Brown;C. Davis;A. Denig;M. Fritsch;W. Gradl;A. Hafner;K. Alwyn;D. Bailey;R. Barlow;G. Jackson;G. Lafferty;J. Anderson;R. Cenci;A. Jawahery;D. Roberts;G. Simi;J. Tuggle;C. Dallapiccola;E. Salvati;R. Cowan;D. Dujmic;G. Sciolla;M. Zhao;D. Lindemann;P. Patel;S. Robertson;M. Schram;P. Biassoni;A. Lazzaro;V. Lombardo;F. Palombo;S. Stracka;L. Cremaldi;R. Godang;R. Kroeger;P. Sonnek;D. Summers;X. Nguyen;M. Simard;P. Taras;G. De Nardo;D. Monorchio;G. Onorato;C. Sciacca;G. Raven;H. Snoek;C. Jessop;K. Knoepfel;J. LoSecco;W. Wang;L. Corwin;K. Honscheid;R. Kass;J. Morris;N. Blount;J. Brau;R. Frey;O. Igonkina;J. Kolb;R. Rahmat;N. Sinev;D. Strom;J. Strube;E. Torrence;G. Castelli;E. Feltresi;N. Gagliardi;M. Margoni;M. Morandin;M. Posocco;M. Rotondo;F. Simonetto;R. Stroili;E. Ben Haim;G. Bonneaud;H. Briand;G. Calderini;J. Chauveau;O. Hamon;P. Leruste;G. Marchiori;J. Ocariz;J. Prendki;S. Sitt;M. Biasini;E. Manoni;A. Rossi;C. Angelini;G. Batignani;S. Bettarini;M. Carpinelli;G. Casarosa;A. Cervelli;F. Forti;M. Giorgi;A. Lusiani;N. Neri;E. Paoloni;G. Rizzo;J. Walsh;D. Lopes Pegna;C. Lu;J. Olsen;A. Smith;A. Telnov;F. Anulli;E. Baracchini;G. Cavoto;R. Faccini;F. Ferrarotto;F. Ferroni;M. Gaspero;L. Li Gioi;M. Mazzoni;G. Piredda;F. Renga;T. Hartmann;T. Leddig;H. Schröder;R. Waldi;T. Adye;B. Franek;E. Olaiya;F. Wilson;S. Emery;G. Hamel de Monchenault;G. Vasseur;C. Yèche;M. Zito;M. Allen;D. Aston;D. Bard;R. Bartoldus;J. Benitez;C. Cartaro;M. Convery;J. Dorfan;G. Dubois Felsmann;W. Dunwoodie;R. Field;M. Franco Sevilla;B. Fulsom;A. Gabareen;M. Graham;P. Grenier;C. Hast;W. Innes;M. Kelsey;H. Kim;P. Kim;M. Kocian;D. Leith;S. Li;B. Lindquist;S. Luitz;H. Lynch;D. MacFarlane;H. Marsiske;D. Muller;H. Neal;S. Nelson;C. O’Grady;I. Ofte;M. Perl;T. Pulliam;B. Ratcliff;A. Roodman;A. Salnikov;V. Santoro;R. Schindler;J. Schwiening;A. Snyder;D. Su;M. Sullivan;S. Sun;K. Suzuki;J. Thompson;J. Va’vra;A. Wagner;M. Weaver;W. Wisniewski;M. Wittgen;D. Wright;H. Wulsin;A. Yarritu;C. Young;V. Ziegler;X. Chen;W. Park;M. Purohit;R. White;J. Wilson;S. Sekula;M. Bellis;P. Burchat;A. Edwards;T. Miyashita;S. Ahmed;M. Alam;J. Ernst;B. Pan;M. Saeed;S. Zain;N. Guttman;A. Soffer;P. Lund;S. Spanier;R. Eckmann;J. Ritchie;A. Ruland;C. Schilling;R. Schwitters;B. Wray;J. Izen;X. Lou;F. Bianchi;D. Gamba;M. Pelliccioni;M. Bomben;L. Lanceri;L. Vitale;N. Lopez March;F. Martinez Vidal;A. Oyanguren;J. Albert;S. Banerjee;H. Choi;K. Hamano;G. King;R. Kowalewski;M. Lewczuk;C. Lindsay;I. Nugent;J. Roney;R. Sobie;T. Gershon;P. Harrison;T. Latham;E. Puccio;H. Band;S. Dasu;K. Flood;Y. Pan;R. Prepost;C. Vuosalo;S. Wu

2011

Abstract

We report the results of a study of the exclusive charmless semileptonic decays, B+→η(′)ℓ+ν and B0→π-ℓ+ν, undertaken with approximately 464×106 BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B+→ηℓ+ν and B0→π-ℓ+ν decays in three and 12 bins of q2, respectively, from which we extract the f+(q2) form-factor shapes and the total branching fractions B(B+→ηℓ+ν)=(0.36±0.05stat±0.04syst)×10-4 and B(B0→π-ℓ+ν)=(1.42±0.05stat±0.07syst)×10-4. We also measure B(B+→η′ℓ+ν)=(0.24±0.08stat±0.03syst)×10-4. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations.

Scheda breve

Scheda completa

Scheda completa (DC)

	Parole chiave
	
			violazione di CP ; decadimenti rari del mesone B
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/04 - Fisica Nucleare e Subnucleare
		
	Data di pubblicazione
	
			2011
		
	Rivista in ANCE
	
			PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevD.83.052011
		
	Tipologia
	
			Article (author)
		
	Appare nelle tipologie:
	
			01 - Articolo su periodico

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/164708

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ND

52

38

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