We present an analysis of exclusive charmless semileptonic B-meson decays based on 377 x 10(6) B (B) over bar pairs recorded with the BABAR detector at the Y(4S) resonance. We select four event samples corresponding to the decay modes B(0) -> pi(-)l(+)v, B(+) -> pi(0)l(+)v, B(0) -> rho(-)l(+)v, and B+ -> rho(0)l(+)v and find the measured branching fractions to be consistent with isospin symmetry. Assuming isospin symmetry, we combine the two B -> pi lv samples, and similarly the two B -> rho lv samples, and measure the branching fractions B(B(0) -> pi(-)l(+)v) = (1.41 +/- 0.05 +/- 0.07) x 10(-4) and B(B(0) -> rho(-)l(+)v) = (1.75 +/- 0.15 +/- 0.27) x 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 vertical bar V(ub)vertical bar. Based on the measured partial branching fraction for B -> pi lv in the range q(2) < 12 GeV(2) and the most recent QCD light-cone sum-rule calculations, we obtain vertical bar V(ub)vertical bar = (3.78 +/- 0.13(-0.40)(+0.55)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 vertical bar V(ub)vertical bar = (2.95 +/- 0.31) x 10(-3) from B -> pi lv, where the error is the combined experimental and theoretical uncertainty.

Study of B -> pi lv and B -> rho lv decays and determination of vertical bar V(ub)vertical bar RID C-5223-2009

BIANCHI, Fabrizio;GAMBA, Diego;PELLICCIONI, Mario;
2011-01-01

Abstract

We present an analysis of exclusive charmless semileptonic B-meson decays based on 377 x 10(6) B (B) over bar pairs recorded with the BABAR detector at the Y(4S) resonance. We select four event samples corresponding to the decay modes B(0) -> pi(-)l(+)v, B(+) -> pi(0)l(+)v, B(0) -> rho(-)l(+)v, and B+ -> rho(0)l(+)v and find the measured branching fractions to be consistent with isospin symmetry. Assuming isospin symmetry, we combine the two B -> pi lv samples, and similarly the two B -> rho lv samples, and measure the branching fractions B(B(0) -> pi(-)l(+)v) = (1.41 +/- 0.05 +/- 0.07) x 10(-4) and B(B(0) -> rho(-)l(+)v) = (1.75 +/- 0.15 +/- 0.27) x 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 vertical bar V(ub)vertical bar. Based on the measured partial branching fraction for B -> pi lv in the range q(2) < 12 GeV(2) and the most recent QCD light-cone sum-rule calculations, we obtain vertical bar V(ub)vertical bar = (3.78 +/- 0.13(-0.40)(+0.55)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 vertical bar V(ub)vertical bar = (2.95 +/- 0.31) x 10(-3) from B -> pi lv, where the error is the combined experimental and theoretical uncertainty.
2011
83
032007
-
P. D. Sanchez;J. P. Lees;V. Poireau;E. Prencipe;V. Tisserand;J. G. Tico;E. Grauges;M. Martinelli;A. Palano;M. Pappagallo;G. Eigen;B. Stugu;L. Sun;M. Battaglia;D. N. Brown;B. Hooberman;L. T. Kerth;Y. G. Kolomensky;G. Lynch;I. L. Osipenkov;T. Tanabe;C. M. Hawkes;N. Soni;A. T. Watson;H. Koch;T. Schroeder;D. J. Asgeirsson;C. Hearty;T. S. Mattison;J. A. McKenna;A. Khan;A. Randle-Conde;V. E. Blinov;A. R. Buzykaev;V. P. Druzhinin;V. B. Golubev;A. P. Onuchin;S. I. Serednyakov;Y. I. Skovpen;E. P. Solodov;K. Y. Todyshev;A. N. Yushkov;M. Bondioli;S. Curry;D. Kirkby;A. J. Lankford;M. Mandelkern;E. C. Martin;D. P. Stoker;H. Atmacan;J. W. Gary;F. Liu;O. Long;G. M. Vitug;Z. Yasin;V. Sharma;C. Campagnari;T. M. Hong;D. Kovalskyi;J. D. Richman;A. M. Eisner;C. A. Heusch;J. Kroseberg;W. S. Lockman;A. J. Martinez;T. Schalk;B. A. Schumm;A. Seiden;L. O. Winstrom;C. H. Cheng;D. A. Doll;B. Echenard;D. G. Hitlin;P. Ongmongkolkul;F. C. Porter;A. Y. Rakitin;R. Andreassen;M. S. Dubrovin;G. Mancinelli;B. T. Meadows;M. D. Sokoloff;P. C. Bloom;W. T. Ford;A. Gaz;J. F. Hirschauer;M. Nagel;U. Nauenberg;J. G. Smith;S. R. Wagner;R. Ayad;W. H. Toki;A. Hauke;H. Jasper;T. M. Karbach;J. Merkel;A. Petzold;B. Spaan;K. Wacker;M. J. Kobel;K. R. Schubert;R. Schwierz;D. Bernard;M. Verderi;P. J. Clark;S. Playfer;J. E. 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. d. Sangro;G. Finocchiaro;M. Nicolaci;S. Pacetti;P. Patteri;I. M. Peruzzi;M. Piccolo;M. Rama;A. Zallo;R. Contri;E. Guido;M. L. Vetere;M. R. Monge;S. Passaggio;C. Patrignani;E. Robutti;S. Tosi;B. Bhuyan;M. Morii;A. Adametz;J. Marks;S. Schenk;U. Uwer;F. U. Bernlochner;H. M. Lacker;T. Lueck;A. Volk;P. D. Dauncey;M. Tibbetts;P. K. Behera;U. Mallik;C. Chen;J. Cochran;H. B. Crawley;L. Dong;W. T. Meyer;S. Prell;E. I. Rosenberg;A. E. Rubin;Y. Y. Gao;A. V. Gritsan;Z. J. Guo;N. Arnaud;M. Davier;D. Derkach;J. F. da;G. Grosdidier;F. L. Diberder;A. M. Lutz;B. Malaescu;A. Perez;P. Roudeau;M. H. Schune;J. Serrano;V. Sordini;A. Stocchi;L. Wang;G. Wormser;D. J. Lange;D. M. Wright;I. Bingham;J. P. Burke;C. A. Chavez;J. P. Coleman;J. R. Fry;E. Gabathuler;R. Gamet;D. E. Hutchcroft;D. J. Payne;C. Touramanis;A. J. Bevan;F. D. Lodovico;R. Sacco;M. Sigamani;G. Cowan;S. Paramesvaran;A. C. Wren;D. N. Brown;C. L. Davis;A. G. Denig;M. Fritsch;W. Gradl;A. Hafner;K. E. Alwyn;D. Bailey;R. J. Barlow;G. Jackson;G. D. Lafferty;T. J. West;J. Anderson;R. Cenci;A. Jawahery;D. A. Roberts;G. Simi;J. M. Tuggle;C. Dallapiccola;E. Salvati;R. Cowan;D. Dujmic;P. H. Fisher;G. Sciolla;R. K. Yamamoto;M. Zhao;P. M. Patel;S. H. Robertson;M. Schram;P. Biassoni;A. Lazzaro;V. Lombardo;F. Palombo;S. Stracka;L. Cremaldi;R. Godang;R. Kroeger;P. Sonnek;D. J. Summers;H. W. Zhao;X. Nguyen;M. Simard;P. Taras;G. D. Nardo;D. Monorchio;G. Onorato;C. Sciacca;G. Raven;H. L. Snoek;C. P. Jessop;K. J. Knoepfel;J. M. LoSecco;W. F. Wang;L. A. Corwin;K. Honscheid;R. Kass;J. P. Morris;A. M. Rahimi;N. L. Blount;J. Brau;R. Frey;O. Igonkina;J. A. Kolb;R. Rahmat;N. B. 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. R. Bonneaud;H. Briand;J. Chauveau;O. Hamon;P. Leruste;G. Marchiori;J. Ocariz;J. Prendki;S. Sitt;M. Biasini;E. Manoni;C. Angelini;G. Batignani;S. Bettarini;G. Calderini;M. Carpinelli;A. Cervelli;F. Forti;M. A. Giorgi;A. Lusiani;N. Neri;E. Paoloni;G. Rizzo;J. J. Walsh;D. L. Pegna;C. Lu;J. Olsen;A. J. S.;A. V. Telnov;F. Anulli;E. Baracchini;G. Cavoto;R. Faccini;F. Ferrarotto;F. Ferroni;M. Gaspero;L. L. Gioi;M. A. Mazzoni;G. Piredda;F. Renga;M. Ebert;T. Hartmann;T. Leddig;H. Schroder;R. Waldi;T. Adye;B. Franek;E. O. Olaiya;F. F. Wilson;S. Emery;G. H. de;G. Vasseur;C. Yeche;M. Zito;M. T. Allen;D. Aston;D. J. Bard;R. Bartoldus;J. F. Benitez;C. Cartaro;M. R. Convery;J. C. Dingfelder;J. Dorfan;G. P. Dubois-Felsmann;W. Dunwoodie;R. C. Field;M. F. Sevilla;B. G. Fulsom;A. M. Gabareen;M. T. Graham;P. Grenier;C. Hast;W. R. Innes;M. H. Kelsey;H. Kim;P. Kim;M. L. Kocian;D. W. G.;S. Li;B. Lindquist;S. Luitz;V. Luth;H. L. Lynch;D. B. MacFarlane;H. Marsiske;D. R. Muller;H. Neal;S. Nelson;C. P. O'Grady;I. Ofte;M. Perl;B. N. Ratcliff;A. Roodman;A. A. Salnikov;V. Santoro;R. H. Schindler;J. Schwiening;A. Snyder;D. Su;M. K. Sullivan;K. Suzuki;J. M. Thompson;J. Va'vra;A. P. Wagner;M. Weaver;C. A. West;W. J. Wisniewski;M. Wittgen;D. H. Wright;H. W. Wulsin;A. K. Yarritu;C. C. Young;V. Ziegler;X. R. Chen;W. Park;M. V. Purohit;R. M. White;J. R. Wilson;S. J. Sekula;M. Bellis;P. R. Burchat;A. J. Edwards;T. S. Miyashita;S. Ahmed;M. S. Alam;J. A. Ernst;B. Pan;M. A. Saeed;S. B. Zain;N. Guttman;A. Soffer;P. Lund;S. M. Spanier;R. Eckmann;J. L. Ritchie;A. M. Ruland;C. J. Schilling;R. F. Schwitters;B. C. Wray;J. M. Izen;X. C. Lou;F. Bianchi;D. Gamba;M. Pelliccioni;M. Bomben;G. D. Ricca;L. Lanceri;L. Vitale;V. Azzolini;N. Lopez-March;F. Martinez-Vidal;D. A. Milanes;A. Oyanguren;J. Albert;S. Banerjee;H. H. F.;K. Hamano;G. J. King;R. Kowalewski;M. J. Lewczuk;I. M. Nugent;J. M. Roney;R. J. Sobie;T. J. Gershon;P. F. Harrison;J. Ilic;T. E. Latham;G. B. Mohanty;E. M. T.;H. R. Band;X. Chen;S. Dasu;K. T. Flood;Y. Pan;R. Prepost;C. O. Vuosalo;S. L. Wu
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/91568
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 164
  • ???jsp.display-item.citation.isi??? 94
social impact