Measurement of the inclusive electron spectrum in charmless semileptonic B decays near the kinematic end point and determination of |V_ub|

Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappagallo, M.; Pompili, A.; Chen, J.C.; N. D., Q.; Rong, G.; Wang, P.; Zhu, Y.S.; Eigen, G.; Ofte, I.; Stugu, B.; Abrams, G.S.; Battaglia, M.; Best, D.; Breon, A.B.; Brown, D.N.; BUTTON SHAFER, J.; Cahn, R.N.; Charles, E.; Day, C.T.; Gill, M.S.; Gritsan, A.V.; Groysman, Y.; Jacobsen, R.G.; Kadel, R.W.; Kadyk, J.; Kerth, L.T.; Kolomensky, Y.G.; Kukartsev, G.; Lynch, G.; Mir, L.M.; Oddone, P.J.; Orimoto, T.J.; Pripstein, M.; Roe, N.A.; Ronan, M.T.; Wenzel, W.A.; Barrett, M.; Ford, K.E.; Harrison, T.J.; Hart, A.J.; Hawkes, C.M.; Morgan, S.E.; Watson, A.T.; Fritsch, M.; Goetzen, K.; Held, T.; Koch, H.; Lewandowski, B.; Pelizaeus, M.; Peters, K.; Schroeder, T.; Steinke, M.; Boyd, J.T.; Burke, J.P.; Chevalier, N.; Cottingham, W.N.; CUHADAR DONSZELMANN, T.; Fulsom, B.G.; Hearty, C.; Knecht, N.S.; Mattison, T.S.; Mckenna, J.A.; Khan, A.; Kyberd, P.; Saleem, M.; Teodorescu, L.; Blinov, A.E.; Blinov, V.E.; Bukin, A.D.; Druzhinin, V.P.; Golubev, V.B.; Kravchenko, E.A.; Onuchin, A.P.; Serednyakov, S.I.; Skovpen, Y.I.; Solodov, E.P.; Yushkov, A.N.; Bondioli, M.; Bruinsma, M.; Chao, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A.J.; Lund, P.; Mandelkern, M.; Mommsen, R.K.; Roethel, W.; Stoker, D.P.; Buchanan, C.; Hartfiel, B.L.; Foulkes, S.D.; Gary, J.W.; Long, O.; Shen, B.C.; Wang, K.; Zhang, L.; DEL RE, D.; Hadavand, H.K.; Hill, E.J.; Macfarlane, D.B.; Paar, H.P.; Rahatlou, S.; Sharma, V.; Berryhill, J.W.; Campagnari, C.; Cunha, A.; Dahmes, B.; Hong, T.M.; Mazur, M.A.; Richman, J.D.; Verkerke, W.; Beck, T.W.; Eisner, A.M.; Flacco, C.J.; Heusch, C.A.; Kroseberg, J.; Lockman, W.S.; Nesom, G.; Schalk, T.; Schumm, B.A.; Seiden, A.; Spradlin, P.; Williams, D.C.; Wilson, M.G.; Albert, J.; Chen, E.; DUBOIS FELSMANN, G.P.; Dvoretskii, A.; Hitlin, D.G.; Minamora, J.S.; Narsky, I.; Piatenko, T.; Porter, F.C.; Ryd, A.; Samuel, A.; Andreassen, R.; Mancinelli, G.; Meadows, B.T.; Sokoloff, M.D.; Blanc, F.; Bloom, P.C.; Chen, S.; Ford, W.T.; Hirschauer, J.F.; Kreisel, A.; Nauenberg, U.; Olivas, A.; Ruddick, W.O.; Smith, J.G.; Ulmer, K.A.; Wagner, S.R.; Zhang, J.; Chen, A.; Eckhart, E.A.; Soffer, A.; Toki, W.H.; Wilson, R.J.; Zeng, Q.; Altenburg, D.; Feltresi, E.; Hauke, A.; Spaan, B.; Brandt, T.; Brose, J.; Dickopp, M.; Klose, V.; Lacker, H.M.; Nogowski, R.; Otto, S.; Petzold, A.; Schubert, J.; Schubert, K.R.; Schwierz, R.; Sundermann, J.E.; Bernard, D.; Bonneaud, G.R.; Grenier, P.; Schrenk, S.; Thiebaux, C.; Vasileiadis, G.; Verderi, M.; Bard, D.J.; Clark, P.J.; Gradl, W.; Muheim, F.; Playfer, S.; Xie, Y.; Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Luppi, E.; Negrini, M.; Piemontese, L.; Anulli, F.; BALDINI FERROLI, R.; Calcaterra, A.; DE SANGRO, R.; Finocchiaro, G.; Patteri, P.; Peruzzi, I.M.; Piccolo, M.; Zallo, A.; Buzzo, A.; Capra, R.; Contri, R.; LO VETERE, M.; Macri, M.M.; Monge, M.R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.; Brandenburg, G.; Chaisanguanthum, K.S.; Morii, M.; Won, E.; Wu, J.; Dubitzky, R.S.; Langenegger, U.; Marks, J.; Schenk, S.; Uwer, U.; Bhimji, W.; Bowerman, D.A.; Dauncey, P.D.; Egede, U.; Flack, R.L.; Gaillard, J.R.; Nash, J.A.; Nikolich, M.B.; Vazquez, W.P.; Chai, X.; Charles, M.J.; Mader, W.F.; Mallik, U.; Ziegler, V.; Cochran, J.; Crawley, H.B.; Eyges, V.; Meyer, W.T.; Prell, S.; Rosenberg, E.I.; Rubin, A.E.; J. I., Y.; Schott, G.; Arnaud, N.; Davier, M.; Giroux, X.; Grosdidier, G.; Hocker, A.; LE DIBERDER, F.; Lepeltier, V.; Lutz, A.M.; Oyanguren, A.; Petersen, T.C.; Plaszczynski, S.; Rodier, S.; Roudeau, P.; Schune, M.H.; Stocchi, A.; Wormser, G.; Cheng, C.H.; Lange, D.J.; Simani, M.C.; Wright, D.M.; Bevan, A.J.; Chavez, C.A.; Forster, I.J.; Fry, J.R.; Gabathuler, E.; Gamet, R.; George, K.A.; Hutchcroft, D.E.; Parry, R.J.; Payne, D.J.; Schofield, K.C.; Touramanis, C.; Cormack, C.M.; DI LODOVICO, F.; Menges, W.; Sacco, R.; Brown, C.L.; Cowan, G.; Flaecher, H.U.; Green, M.G.; Hopkins, D.A.; Jackson, P.S.; Mcmahon, T.R.; Ricciardi, S.; Salvatore, F.; Brown, D.N.; Davis, C.L.; Allison, J.; Barlow, N.R.; Barlow, R.J.; Edgar, C.L.; Hodgkinson, M.C.; Kelly, M.P.; Lafferty, G.D.; Naisbit, M.T.; Williams, J.C.; Chen, C.; Hulsbergen, W.D.; Jawahery, A.; Kovalskyi, D.; Lae, C.K.; Roberts, D.A.; Simi, G.; Blaylock, G.; Dallapiccola, C.; Hertzbach, S.S.; Kofler, R.; Li, X.; Moore, T.B.; Saremi, S.; Staengle, H.; Willocq, S.Y.; Cowan, R.; Koeneke, K.; Sciolla, G.; Sekula, S.J.; Spitznagel, M.; Taylor, F.; Yamamoto, R.K.; Kim, H.; Patel, P.M.; Robertson, S.H.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Bauer, J.M.; Cremaldi, L.; Eschenburg, V.; Godang, R.; Kroeger, R.; Reidy, J.; Sanders, D.A.; Summers, D.J.; Zhao, H.W.; Brunet, S.; Cote, D.; Taras, P.; Viaud, F.B.; Nicholson, H.; Cavallo, N.; DE NARDO, G.; Fabozzi, F.; Gatto, C.; Lista, L.; Monorchio, D.; Paolucci, P.; Piccolo, D.; Sciacca, C.; Baak, M.; Bulten, H.; Raven, G.; Snoek, H.L.; Wilden, L.; Jessop, C.P.; Losecco, J.M.; Allmendinger, T.; Benelli, G.; Gan, K.K.; Honscheid, K.; Hufnagel, D.; Jackson, P.D.; Kagan, H.; Kass, R.; Pulliam, T.; Rahimi, A.M.; TER ANTONYAN, R.; Wong, Q.K.; Blount, N.L.; Brau, J.; Frey, R.; Igonkina, O.; Lu, M.; Potter, C.T.; Rahmat, R.; Sinev, N.B.; Strom, D.; Strube, J.; Torrence, E.; Galeazzi, F.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.; Benayoun, M.; Briand, H.; Chauveau, J.; David, P.; DEL BUONO, L.; DE LA VAISSIERE, C.; Hamon, O.; John, M.J.J.; Leruste, P.; Malcles, J.; Ocariz, J.; Roos, L.; Therin, G.; Behera, P.K.; Gladney, L.; Guo, Q.H.; Panetta, J.; Biasini, M.; Covarelli, R.; Pacetti, S.; Pioppi, M.; Angelini, C.; Batignani, G.; Bettarini, S.; Bucci, F.; Calderini, G.; Carpinelli, M.; Cenci, R.; Forti, F.; Giorgi, M.A.; Lusiani, A.; Marchiori, G.; Morganti, M.; Neri, N.; Paoloni, E.; Rama, M.; Rizzo, G.; Walsh, J.; Haire, M.; Judd, D.; Wagoner, D.E.; Biesiada, J.; Danielson, N.; Elmer, P.; Lau, Y.P.; Lu, C.; Olsen, J.; Smith, A.J.S.; Telnov, A.V.; Bellini, F.; Cavoto, G.; D'Orazio, A.; Marco, E.D.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L.L.; Mazzoni, M.A.; Morganti, S.; Piredda, G.; Polci, F.; Tehrani, F.S.; Voena, C.; Schroder, H.; Waldi, R.; Adye, T.; DE GROOT, N.; Franek, B.; Gopal, G.P.; Olaiya, E.O.; Wilson, F.F.; Aleksan, R.; Emery, S.; Gaidot, A.; Ganzhur, S.F.; Graziani, G.; DE MONCHENAULT, G.H.; Kozanecki, W.; Legendre, M.; London, G.W.; Mayer, B.; Vasseur, G.; Yeche, C.; Zito, M.; Purohit, M.V.; Weidemann, A.W.; Wilson, J.R.; Yumiceva, F.X.; Abe, T.; Allen, M.T.; Aston, D.; Bartoldus, R.; Berger, N.; Boyarski, A.M.; Buchmueller, O.L.; Claus, R.; Coleman, J.P.; Convery, M.R.; Cristinziani, M.; Dingfelder, J.C.; Dong, D.; Dorfan, J.; Dujmic, D.; Dunwoodie, W.; Fan, S.; Field, R.C.; Glanzman, T.; Gowdy, S.J.; Hadig, T.; Halyo, V.; Hast, C.; Hryn'Ova, T.; Innes, W.R.; Kelsey, M.H.; Kim, P.; Kocian, M.L.; Leith, D.W.G.S.; Libby, J.; Luitz, S.; Luth, V.; Lynch, H.L.; Marsiske, H.; Messner, R.; Muller, D.R.; O'Grady, C.P.; Ozcan, V.E.; Perazzo, A.; Perl, M.; Ratcliff, B.N.; Roodman, A.; Salnikov, A.A.; Schindler, R.H.; Schwiening, J.; Snyder, A.; Stelzer, J.; Su, D.; Sullivan, M.K.; Suzuki, K.; Swain, S.K.; Thompson, J.M.; Va'Vra, J.; VAN BAKEL, N.; Weaver, M.; Weinstein, A.J.R.; Wisniewski, W.J.; Wittgen, M.; Wright, D.H.; Yarritu, A.K.; Yi, K.; Young, C.C.; Burchat, P.R.; Edwards, A.J.; Majewski, S.A.; Petersen, B.A.; Roat, C.; Ahmed, M.; Ahmed, S.; Alam, M.S.; Bula, R.; Ernst, J.A.; Saeed, M.A.; Wappler, F.R.; Zain, S.B.; Bugg, W.; Krishnamurthy, M.; Spanier, S.M.; Eckmann, R.; Ritchie, J.L.; Satpathy, A.; Schwitters, R.F.; Izen, J.M.; Kitayama, I.; Lou, X.C.; Ye, S.; Bianchi, F.; Bona, M.; Gallo, F.; Gamba, D.; Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; DELLA RICCA, G.; Dittongo, S.; Grancagnolo, S.; Lanceri, L.; Vitale, L.; Azzolini, V.; MARTINEZ VIDAL, F.; Panvini, R.S.; Banerjee, S.; Bhuyan, B.; Brown, C.M.; Fortin, D.; Hamano, K.; Kowalewski, R.; Roney, J.M.; Sobie, R.J.; Back, J.J.; Harrison, P.F.; Latham, T.E.; Mohanty, G.B.; Band, H.R.; Chen, X.; Cheng, B.; Dasu, S.; Datta, M.; Eichenbaum, A.M.; Flood, K.T.; Graham, M.T.; Hollar, J.J.; Johnson, J.R.; Kutter, P.E.; Li, H.; Liu, R.; Mellado, B.; Mihalyi, A.; Mohapatra, A.K.; Pan, Y.; Pierini, M.; Prepost, R.; Tan, P.; S. L., W.; Yu, Z.; Neal, H.

doi:10.1103/PhysRevD.73.012006

We present a measurement of the inclusive electron spectrum in B ->X_u e nu decays near the kinematic limit for B -> X_c e nu transitions, using a sample of 88 x 10^(6) B anti B pairs recorded by the BABAR detector at the Upsilon(4S) resonance. Partial branching fraction measurements are performed in five overlapping intervals of the electron momentum; for the interval of 2.0-2.6 GeV/c we obtain Delta B(B -> X_u e nu)= (0.572 +/- 0.041(stat) +/- 0.065(syst)) x 10(-3). Combining this result with shape function parameters extracted from BABAR measurements of moments of the inclusive photon spectrum in B -> Xs gamma decays and moments of the hadron-mass and lepton-energy spectra in B -> Xc) l nu decays we determine |V_ub|= (4.44 +/- 0.25(exp-0.38SF)(+0.42) +/- 0.22(theory)) x 10^(-3). Here the first error represents the combined statistical and systematic experimental uncertainties of the partial branching fraction measurement, the second error refers to the uncertainty of the determination of the shape function parameters, and the third error is due to theoretical uncertainties in the QCD calculations.

Measurement of the inclusive electron spectrum in charmless semileptonic B decays near the kinematic end point and determination of |V_ub| / B. AUBERT, R. BARATE, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, M. PAPPAGALLO, A. POMPILI, J.C. CHEN, N.D. QI, G. RONG, P. WANG, Y.S. ZHU, G. EIGEN, I. OFTE, B. STUGU, G.S. ABRAMS, M. BATTAGLIA, D. BEST, A.B. BREON, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, C.T. DAY, M.S. GILL, A.V. GRITSAN, Y. GROYSMAN, R.G. JACOBSEN, R.W. KADEL, J. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, P.J. ODDONE, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, S.E. MORGAN, A.T. WATSON, M. FRITSCH, K. GOETZEN, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, N. CHEVALIER, W.N. COTTINGHAM, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, L. TEODORESCU, A.E. BLINOV, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, E.A. KRAVCHENKO, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, A.N. YUSHKOV, M. BONDIOLI, M. BRUINSMA, M. CHAO, S. CURRY, I. ESCHRICH, D. KIRKBY, A.J. LANKFORD, P. LUND, M. MANDELKERN, R.K. MOMMSEN, W. ROETHEL, D.P. STOKER, C. BUCHANAN, B.L. HARTFIEL, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, D. DEL RE, H.K. HADAVAND, E.J. HILL, D.B. MACFARLANE, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, M.A. MAZUR, J.D. RICHMAN, W. VERKERKE, T.W. BECK, A.M. EISNER, C.J. FLACCO, C.A. HEUSCH, J. KROSEBERG, W.S. LOCKMAN, G. NESOM, T. SCHALK, B.A. SCHUMM, A. SEIDEN, P. SPRADLIN, D.C. WILLIAMS, M.G. WILSON, J. ALBERT, E. CHEN, G.P. DUBOIS-FELSMANN, A. DVORETSKII, D.G. HITLIN, J.S. MINAMORA, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, A. SAMUEL, R. 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WEINSTEIN, W.J. WISNIEWSKI, M. WITTGEN, D.H. WRIGHT, A.K. YARRITU, K. YI, C.C. YOUNG, P.R. BURCHAT, A.J. EDWARDS, S.A. MAJEWSKI, B.A. PETERSEN, C. ROAT, M. AHMED, S. AHMED, M.S. ALAM, R. BULA, J.A. ERNST, M.A. SAEED, F.R. WAPPLER, S.B. ZAIN, W. BUGG, M. KRISHNAMURTHY, S.M. SPANIER, R. ECKMANN, J.L. RITCHIE, A. SATPATHY, R.F. SCHWITTERS, J.M. IZEN, I. KITAYAMA, X.C. LOU, S. YE, F. BIANCHI, M. BONA, F. GALLO, D. GAMBA, M. BOMBEN, L. BOSISIO, C. CARTARO, F. COSSUTTI, G. DELLA RICCA, S. DITTONGO, S. GRANCAGNOLO, L. LANCERI, L. VITALE, V. AZZOLINI, F. MARTINEZ-VIDAL, R.S. PANVINI, S. BANERJEE, B. BHUYAN, C.M. BROWN, D. FORTIN, K. HAMANO, R. KOWALEWSKI, J.M. RONEY, R.J. SOBIE, J.J. BACK, P.F. HARRISON, T.E. LATHAM, G.B. MOHANTY, H.R. BAND, X. CHEN, B. CHENG, S. DASU, M. DATTA, A.M. EICHENBAUM, K.T. FLOOD, M.T. GRAHAM, J.J. HOLLAR, J.R. JOHNSON, P.E. KUTTER, H. LI, R. LIU, B. MELLADO, A. MIHALYI, A.K. MOHAPATRA, Y. PAN, M. PIERINI, R. PREPOST, P. TAN, S.L. WU, Z. YU, H. NEAL. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 73:1(2006), pp. 012006.012006-1-012006.012006-19.

Measurement of the inclusive electron spectrum in charmless semileptonic B decays near the kinematic end point and determination of |V_ub|

B. AUBERT;R. BARATE;D. BOUTIGNY;F. COUDERC;Y. KARYOTAKIS;J. P. LEES;V. POIREAU;V. TISSERAND;A. ZGHICHE;E. GRAUGES;A. PALANO;M. PAPPAGALLO;A. POMPILI;J. C. CHEN;N. D. QI;G. RONG;P. WANG;Y. S. ZHU;G. EIGEN;I. OFTE;B. STUGU;G. S. ABRAMS;M. BATTAGLIA;D. BEST;A. B. BREON;D. N. BROWN;J. BUTTON SHAFER;R. N. CAHN;E. CHARLES;C. T. DAY;M. S. GILL;A. V. GRITSAN;Y. GROYSMAN;R. G. JACOBSEN;R. W. KADEL;J. KADYK;L. T. KERTH;Y. G. KOLOMENSKY;G. KUKARTSEV;G. LYNCH;L. M. MIR;P. J. ODDONE;T. J. ORIMOTO;M. PRIPSTEIN;N. A. ROE;M. T. RONAN;W. A. WENZEL;M. BARRETT;K. E. FORD;T. J. HARRISON;A. J. HART;C. M. HAWKES;S. E. MORGAN;A. T. WATSON;M. FRITSCH;K. GOETZEN;T. HELD;H. KOCH;B. LEWANDOWSKI;M. PELIZAEUS;K. PETERS;T. SCHROEDER;M. STEINKE;J. T. BOYD;J. P. BURKE;N. CHEVALIER;W. N. COTTINGHAM;T. CUHADAR DONSZELMANN;B. G. FULSOM;C. HEARTY;N. S. KNECHT;T. S. MATTISON;J. A. MCKENNA;A. KHAN;P. KYBERD;M. SALEEM;L. TEODORESCU;A. E. BLINOV;V. E. BLINOV;A. D. BUKIN;V. P. DRUZHININ;V. B. GOLUBEV;E. A. KRAVCHENKO;A. P. 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ECKHART;A. SOFFER;W. H. TOKI;R. J. WILSON;Q. ZENG;D. ALTENBURG;E. FELTRESI;A. HAUKE;B. SPAAN;T. BRANDT;J. BROSE;M. DICKOPP;V. KLOSE;H. M. LACKER;R. NOGOWSKI;S. OTTO;A. PETZOLD;J. SCHUBERT;K. R. SCHUBERT;R. SCHWIERZ;J. E. SUNDERMANN;D. BERNARD;G. R. BONNEAUD;P. GRENIER;S. SCHRENK;C. THIEBAUX;G. VASILEIADIS;M. VERDERI;D. J. BARD;P. J. CLARK;W. GRADL;F. MUHEIM;S. PLAYFER;Y. XIE;M. ANDREOTTI;D. BETTONI;C. BOZZI;R. CALABRESE;G. CIBINETTO;E. LUPPI;M. NEGRINI;L. PIEMONTESE;F. ANULLI;R. BALDINI FERROLI;A. CALCATERRA;R. DE SANGRO;G. FINOCCHIARO;P. PATTERI;I. M. PERUZZI;M. PICCOLO;A. ZALLO;A. BUZZO;R. CAPRA;R. CONTRI;M. LO VETERE;M. M. MACRI;M. R. MONGE;S. PASSAGGIO;C. PATRIGNANI;E. ROBUTTI;A. SANTRONI;S. TOSI;G. BRANDENBURG;K. S. CHAISANGUANTHUM;M. MORII;E. WON;J. WU;R. S. DUBITZKY;U. LANGENEGGER;J. MARKS;S. SCHENK;U. UWER;W. BHIMJI;D. A. BOWERMAN;P. D. DAUNCEY;U. EGEDE;R. L. FLACK;J. R. GAILLARD;J. A. NASH;M. B. NIKOLICH;W. P. VAZQUEZ;X. CHAI;M. J. CHARLES;W. F. MADER;U. MALLIK;V. ZIEGLER;J. 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BEHERA;L. GLADNEY;Q. H. GUO;J. PANETTA;M. BIASINI;R. COVARELLI;S. PACETTI;M. PIOPPI;C. ANGELINI;G. BATIGNANI;S. BETTARINI;F. BUCCI;G. CALDERINI;M. CARPINELLI;R. CENCI;F. FORTI;M. A. GIORGI;A. LUSIANI;G. MARCHIORI;M. MORGANTI;N. NERI;E. PAOLONI;M. RAMA;G. RIZZO;J. WALSH;M. HAIRE;D. JUDD;D. E. WAGONER;J. BIESIADA;N. DANIELSON;P. ELMER;Y. P. LAU;C. LU;J. OLSEN;A. J. S. SMITH;A. V. TELNOV;F. BELLINI;G. CAVOTO;A. D'ORAZIO;E. D. MARCO;R. FACCINI;F. FERRAROTTO;F. FERRONI;M. GASPERO;L. L. GIOI;M. A. MAZZONI;S. MORGANTI;G. PIREDDA;F. POLCI;F. S. TEHRANI;C. VOENA;H. SCHRODER;R. WALDI;T. ADYE;N. DE GROOT;B. FRANEK;G. P. GOPAL;E. O. OLAIYA;F. F. WILSON;R. ALEKSAN;S. EMERY;A. GAIDOT;S. F. GANZHUR;G. GRAZIANI;G. H. DE MONCHENAULT;W. KOZANECKI;M. LEGENDRE;G. W. LONDON;B. MAYER;G. VASSEUR;C. YECHE;M. ZITO;M. V. PUROHIT;A. W. WEIDEMANN;J. R. WILSON;F. X. YUMICEVA;T. ABE;M. T. ALLEN;D. ASTON;R. BARTOLDUS;N. BERGER;A. M. BOYARSKI;O. L. BUCHMUELLER;R. CLAUS;J. P. COLEMAN;M. R. CONVERY;M. CRISTINZIANI;J. C. DINGFELDER;D. DONG;J. DORFAN;D. DUJMIC;W. DUNWOODIE;S. FAN;R. C. FIELD;T. GLANZMAN;S. J. GOWDY;T. HADIG;V. HALYO;C. HAST;T. HRYN'OVA;W. R. INNES;M. H. KELSEY;P. KIM;M. L. KOCIAN;D. W. G. S. LEITH;J. LIBBY;S. LUITZ;V. LUTH;H. L. LYNCH;H. MARSISKE;R. MESSNER;D. R. MULLER;C. P. O'GRADY;V. E. OZCAN;A. PERAZZO;M. PERL;B. N. RATCLIFF;A. ROODMAN;A. A. SALNIKOV;R. H. SCHINDLER;J. SCHWIENING;A. SNYDER;J. STELZER;D. SU;M. K. SULLIVAN;K. SUZUKI;S. K. SWAIN;J. M. THOMPSON;J. VA'VRA;N. VAN BAKEL;M. WEAVER;A. J. R. WEINSTEIN;W. J. WISNIEWSKI;M. WITTGEN;D. H. WRIGHT;A. K. YARRITU;K. YI;C. C. YOUNG;P. R. BURCHAT;A. J. EDWARDS;S. A. MAJEWSKI;B. A. PETERSEN;C. ROAT;M. AHMED;S. AHMED;M. S. ALAM;R. BULA;J. A. ERNST;M. A. SAEED;F. R. WAPPLER;S. B. ZAIN;W. BUGG;M. KRISHNAMURTHY;S. M. SPANIER;R. ECKMANN;J. L. RITCHIE;A. SATPATHY;R. F. SCHWITTERS;J. M. IZEN;I. KITAYAMA;X. C. LOU;S. YE;F. BIANCHI;M. BONA;F. GALLO;D. GAMBA;M. BOMBEN;L. BOSISIO;C. CARTARO;F. COSSUTTI;G. DELLA RICCA;S. DITTONGO;S. 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2006

Abstract

We present a measurement of the inclusive electron spectrum in B ->X_u e nu decays near the kinematic limit for B -> X_c e nu transitions, using a sample of 88 x 10^(6) B anti B pairs recorded by the BABAR detector at the Upsilon(4S) resonance. Partial branching fraction measurements are performed in five overlapping intervals of the electron momentum; for the interval of 2.0-2.6 GeV/c we obtain Delta B(B -> X_u e nu)= (0.572 +/- 0.041(stat) +/- 0.065(syst)) x 10(-3). Combining this result with shape function parameters extracted from BABAR measurements of moments of the inclusive photon spectrum in B -> Xs gamma decays and moments of the hadron-mass and lepton-energy spectra in B -> Xc) l nu decays we determine |V_ub|= (4.44 +/- 0.25(exp-0.38SF)(+0.42) +/- 0.22(theory)) x 10^(-3). Here the first error represents the combined statistical and systematic experimental uncertainties of the partial branching fraction measurement, the second error refers to the uncertainty of the determination of the shape function parameters, and the third error is due to theoretical uncertainties in the QCD calculations.

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Scheda completa

Scheda completa (DC)

	Parole chiave
	
			B mesons ; CP invariance ; electromagnetic decays ; electroweak theories ; quantum chromodynamics ; semileptonic decays ; standard model
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/01 - Fisica Sperimentale
		
	Data di pubblicazione
	
			2006
		
	Rivista in ANCE
	
			PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevD.73.012006
		
	Tipologia
	
			Article (author)
		
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			01 - Articolo su periodico

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/22559

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