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Title: Study of B̄→Xulν̄ decays in BB̄ events tagged by a fully reconstructed B-meson decay and determination of |Vub|

Abstract

We report measurements of partial branching fractions for inclusive charmless semileptonic B decays B¯¯¯→Xulν¯ and the determination of the Cabibbo–Kobayashi–Maskawa (CKM) matrix element |Vub|. The analysis is based on a sample of 467×10⁶ Υ(4S)→BB¯¯¯ decays recorded with the BABAR detector at the PEP-II e⁺e⁻ storage rings. We select events in which the decay of one of the B mesons is fully reconstructed and an electron or a muon signals the semileptonic decay of the other B meson. We measure partial branching fractions ΔB in several restricted regions of phase space and determine the CKM element |Vub| based on different QCD predictions. For decays with a charged lepton momentum p*l>1.0 GeV in the B meson rest frame, we obtain ΔB=(1.80±0.13stat±0.15sys±0.02theo)×10⁻³ from a fit to the two-dimensional MX-q² distribution. Here, MX refers to the invariant mass of the final state hadron X and q² is the invariant mass squared of the charged lepton and neutrino. From this measurement we extract |Vub|=(4.33±0.24exp±0.15theo)×10⁻³ as the arithmetic average of four results obtained from four different QCD predictions of the partial rate. We separately determine partial branching fractions for B¯¯¯0 and B⁻ decays and derive a limit on the isospin breaking in B¯¯¯→Xulν¯ decays.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1103073
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Volume: 86 Journal Issue: 3; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Lees, J. P., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Tackmann, K., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Petrella, A., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., 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., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Le Diberder, F., Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Brown, D. N., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., 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., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Lopes Pegna, D., Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., Hamel de Monchenault, G., Vasseur, G., Yèche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., 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., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va’vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., 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., Lanceri, L., Vitale, L., Azzolini, V., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lindsay, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., and Wu, S. L. Study of B̄→Xulν̄ decays in BB̄ events tagged by a fully reconstructed B-meson decay and determination of |Vub|. United States: N. p., 2012. Web. doi:10.1103/PhysRevD.86.032004.
Lees, J. P., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Tackmann, K., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Petrella, A., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., 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., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Le Diberder, F., Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Brown, D. N., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., 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., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Lopes Pegna, D., Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., Hamel de Monchenault, G., Vasseur, G., Yèche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., 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., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va’vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., 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., Lanceri, L., Vitale, L., Azzolini, V., Martinez-Vidal, F., Oyanguren, A., Ahmed, H., Albert, J., Banerjee, Sw., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lindsay, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Puccio, E. M. T., Band, H. R., Dasu, S., Pan, Y., Prepost, R., & Wu, S. L. Study of B̄→Xulν̄ decays in BB̄ events tagged by a fully reconstructed B-meson decay and determination of |Vub|. United States. doi:10.1103/PhysRevD.86.032004.
Lees, J. P., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., Milanes, D. A., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Brown, D. N., Kerth, L. T., Kolomensky, Yu. G., Lynch, G., Tackmann, K., Koch, H., Schroeder, T., Asgeirsson, D. J., Hearty, C., Mattison, T. S., McKenna, J. A., Khan, A., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu., Yushkov, A. N., Bondioli, M., Kirkby, D., Lankford, A. J., Mandelkern, M., Stoker, D. P., Atmacan, H., Gary, J. W., Liu, F., Long, O., Vitug, G. M., Campagnari, C., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Kroseberg, J., Lockman, W. S., Martinez, A. J., Schalk, T., Schumm, B. A., Seiden, A., Cheng, C. H., Doll, D. A., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Rakitin, A. Y., Andreassen, R., Dubrovin, M. S., Huard, Z., Meadows, B. T., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nagel, M., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Kobel, M. J., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Clark, P. J., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Munerato, M., Negrini, M., Petrella, A., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Nicolaci, M., 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., Bhuyan, B., Prasad, V., Lee, C. L., Morii, M., Edwards, A. J., Adametz, A., Marks, J., Uwer, U., Bernlochner, F. U., Ebert, M., Lacker, H. M., Lueck, T., Dauncey, P. D., Tibbetts, M., Behera, P. K., Mallik, U., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rosenberg, E. I., Rubin, A. E., Gritsan, A. V., Guo, Z. J., Arnaud, N., Davier, M., Grosdidier, G., Le Diberder, F., Lutz, A. M., Malaescu, B., Roudeau, P., Schune, M. H., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Bingham, I., Chavez, C. A., Coleman, J. P., Fry, J. R., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Sigamani, M., Cowan, G., Brown, D. N., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Hafner, A., Prencipe, E., Alwyn, K. E., Bailey, D., Barlow, R. J., Jackson, G., Lafferty, G. D., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Simi, G., Dallapiccola, C., Cowan, R., Dujmic, D., Sciolla, G., Lindemann, D., Patel, P. M., Robertson, S. H., Schram, M., Biassoni, P., Lazzaro, A., Lombardo, V., Neri, N., Palombo, F., Stracka, S., Cremaldi, L., Godang, R., Kroeger, R., Sonnek, P., Summers, D. J., Nguyen, X., 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., Honscheid, K., Kass, R., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Gagliardi, N., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Hamon, O., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Rizzo, G., Walsh, J. J., Lopes Pegna, D., Lu, C., Olsen, J., Smith, A. J. S., Telnov, A. V., Anulli, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., Mazzoni, M. A., Piredda, G., Bünger, C., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Waldi, R., Adye, T., Olaiya, E. O., Wilson, F. F., Emery, S., Hamel de Monchenault, G., Vasseur, G., Yèche, Ch., Aston, D., Bard, D. J., Bartoldus, R., Cartaro, C., Convery, M. R., 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., Lewis, P., Li, S., Lindquist, B., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Ofte, I., Perl, M., Pulliam, T., Ratcliff, B. N., Roodman, A., Salnikov, A. A., Schindler, R. H., Snyder, A., Su, D., Sullivan, M. K., Va’vra, J., Wagner, A. P., Weaver, M., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Yarritu, A. K., Young, C. C., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Benitez, J. F., Burchat, P. R., Miyashita, T. S., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Lund, P., Spanier, S. M., Eckmann, R., Ritchie, J. L., Ruland, A. 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@article{osti_1103073,
title = {Study of B̄→Xulν̄ decays in BB̄ events tagged by a fully reconstructed B-meson decay and determination of |Vub|},
author = {Lees, J. P. and Poireau, V. and Tisserand, V. and Garra Tico, J. and Grauges, E. and Martinelli, M. and Milanes, D. A. and Palano, A. and Pappagallo, M. and Eigen, G. and Stugu, B. and Brown, D. N. and Kerth, L. T. and Kolomensky, Yu. G. and Lynch, G. and Tackmann, K. and Koch, H. and Schroeder, T. and Asgeirsson, D. J. and Hearty, C. and Mattison, T. S. and McKenna, J. A. and Khan, A. and Blinov, V. E. and Buzykaev, A. R. and Druzhinin, V. P. and Golubev, V. B. and Kravchenko, E. A. and Onuchin, A. P. and Serednyakov, S. I. and Skovpen, Yu. I. and Solodov, E. P. and Todyshev, K. Yu. and Yushkov, A. N. and Bondioli, M. and Kirkby, D. and Lankford, A. J. and Mandelkern, M. and Stoker, D. P. and Atmacan, H. and Gary, J. W. and Liu, F. and Long, O. and Vitug, G. M. and Campagnari, C. and Hong, T. M. and Kovalskyi, D. and Richman, J. D. and West, C. A. and Eisner, A. M. and Kroseberg, J. and Lockman, W. S. and Martinez, A. J. and Schalk, T. and Schumm, B. A. and Seiden, A. and Cheng, C. H. and Doll, D. A. and Echenard, B. and Flood, K. T. and Hitlin, D. G. and Ongmongkolkul, P. and Porter, F. C. and Rakitin, A. Y. and Andreassen, R. and Dubrovin, M. S. and Huard, Z. and Meadows, B. T. and Sokoloff, M. D. and Sun, L. and Bloom, P. C. and Ford, W. T. and Gaz, A. and Nagel, M. and Nauenberg, U. and Smith, J. G. and Wagner, S. R. and Ayad, R. and Toki, W. H. and Spaan, B. and Kobel, M. J. and Schubert, K. R. and Schwierz, R. and Bernard, D. and Verderi, M. and Clark, P. J. and Playfer, S. and Bettoni, D. and Bozzi, C. and Calabrese, R. and Cibinetto, G. and Fioravanti, E. and Garzia, I. and Luppi, E. and Munerato, M. and Negrini, M. and Petrella, A. and Piemontese, L. and Santoro, V. and Baldini-Ferroli, R. and Calcaterra, A. and de Sangro, R. and Finocchiaro, G. and Nicolaci, M. and Patteri, P. and Peruzzi, I. M. and Piccolo, M. and Rama, M. and Zallo, A. and Contri, R. and Guido, E. and Lo Vetere, M. and Monge, M. R. and Passaggio, S. and Patrignani, C. and Robutti, E. and Bhuyan, B. and Prasad, V. and Lee, C. L. and Morii, M. and Edwards, A. J. and Adametz, A. and Marks, J. and Uwer, U. and Bernlochner, F. U. and Ebert, M. and Lacker, H. M. and Lueck, T. and Dauncey, P. D. and Tibbetts, M. and Behera, P. K. and Mallik, U. and Chen, C. and Cochran, J. and Meyer, W. T. and Prell, S. and Rosenberg, E. I. and Rubin, A. E. and Gritsan, A. V. and Guo, Z. J. and Arnaud, N. and Davier, M. and Grosdidier, G. and Le Diberder, F. and Lutz, A. M. and Malaescu, B. and Roudeau, P. and Schune, M. H. and Stocchi, A. and Wormser, G. and Lange, D. J. and Wright, D. M. and Bingham, I. and Chavez, C. A. and Coleman, J. P. and Fry, J. R. and Gabathuler, E. and Hutchcroft, D. E. and Payne, D. J. and Touramanis, C. and Bevan, A. J. and Di Lodovico, F. and Sacco, R. and Sigamani, M. and Cowan, G. and Brown, D. N. and Davis, C. L. and Denig, A. G. and Fritsch, M. and Gradl, W. and Hafner, A. and Prencipe, E. and Alwyn, K. E. and Bailey, D. and Barlow, R. J. and Jackson, G. and Lafferty, G. D. and Cenci, R. and Hamilton, B. and Jawahery, A. and Roberts, D. A. and Simi, G. and Dallapiccola, C. and Cowan, R. and Dujmic, D. and Sciolla, G. and Lindemann, D. and Patel, P. M. and Robertson, S. H. and Schram, M. and Biassoni, P. and Lazzaro, A. and Lombardo, V. and Neri, N. and Palombo, F. and Stracka, S. and Cremaldi, L. and Godang, R. and Kroeger, R. and Sonnek, P. and Summers, D. J. and Nguyen, X. and Taras, P. and De Nardo, G. and Monorchio, D. and Onorato, G. and Sciacca, C. and Raven, G. and Snoek, H. L. and Jessop, C. P. and Knoepfel, K. J. and LoSecco, J. M. and Wang, W. F. and Honscheid, K. and Kass, R. and Brau, J. and Frey, R. and Sinev, N. B. and Strom, D. and Torrence, E. and Feltresi, E. and Gagliardi, N. and Margoni, M. and Morandin, M. and Posocco, M. and Rotondo, M. and Simonetto, F. and Stroili, R. and Ben-Haim, E. and Bomben, M. and Bonneaud, G. R. and Briand, H. and Calderini, G. and Chauveau, J. and Hamon, O. and Leruste, Ph. and Marchiori, G. and Ocariz, J. and Sitt, S. and Biasini, M. and Manoni, E. and Pacetti, S. and Rossi, A. and Angelini, C. and Batignani, G. and Bettarini, S. and Carpinelli, M. and Casarosa, G. and Cervelli, A. and Forti, F. and Giorgi, M. A. and Lusiani, A. and Oberhof, B. and Paoloni, E. and Perez, A. and Rizzo, G. and Walsh, J. J. and Lopes Pegna, D. and Lu, C. and Olsen, J. and Smith, A. J. S. and Telnov, A. V. and Anulli, F. and Cavoto, G. and Faccini, R. and Ferrarotto, F. and Ferroni, F. and Gaspero, M. and Li Gioi, L. and Mazzoni, M. A. and Piredda, G. and Bünger, C. and Grünberg, O. and Hartmann, T. and Leddig, T. and Schröder, H. and Waldi, R. and Adye, T. and Olaiya, E. O. and Wilson, F. F. and Emery, S. and Hamel de Monchenault, G. and Vasseur, G. and Yèche, Ch. and Aston, D. and Bard, D. J. and Bartoldus, R. and Cartaro, C. and Convery, M. R. and Dorfan, J. and Dubois-Felsmann, G. P. and Dunwoodie, W. and Field, R. C. and Franco Sevilla, M. and Fulsom, B. G. and Gabareen, A. M. and Graham, M. T. and Grenier, P. and Hast, C. and Innes, W. R. and Kelsey, M. H. and Kim, H. and Kim, P. and Kocian, M. L. and Leith, D. W. G. S. and Lewis, P. and Li, S. and Lindquist, B. and Luitz, S. and Luth, V. and Lynch, H. L. and MacFarlane, D. B. and Muller, D. R. and Neal, H. and Nelson, S. and Ofte, I. and Perl, M. and Pulliam, T. and Ratcliff, B. N. and Roodman, A. and Salnikov, A. A. and Schindler, R. H. and Snyder, A. and Su, D. and Sullivan, M. K. and Va’vra, J. and Wagner, A. P. and Weaver, M. and Wisniewski, W. J. and Wittgen, M. and Wright, D. H. and Wulsin, H. W. and Yarritu, A. K. and Young, C. C. and Ziegler, V. and Park, W. and Purohit, M. V. and White, R. M. and Wilson, J. R. and Randle-Conde, A. and Sekula, S. J. and Bellis, M. and Benitez, J. F. and Burchat, P. R. and Miyashita, T. S. and Alam, M. S. and Ernst, J. A. and Gorodeisky, R. and Guttman, N. and Peimer, D. R. and Soffer, A. and Lund, P. and Spanier, S. M. and Eckmann, R. and Ritchie, J. L. and Ruland, A. M. and Schilling, C. J. and Schwitters, R. F. and Wray, B. C. and Izen, J. M. and Lou, X. C. and Bianchi, F. and Gamba, D. and Lanceri, L. and Vitale, L. and Azzolini, V. and Martinez-Vidal, F. and Oyanguren, A. and Ahmed, H. and Albert, J. and Banerjee, Sw. and Choi, H. H. F. and King, G. J. and Kowalewski, R. and Lewczuk, M. J. and Lindsay, C. and Nugent, I. M. and Roney, J. M. and Sobie, R. J. and Tasneem, N. and Gershon, T. J. and Harrison, P. F. and Latham, T. E. and Puccio, E. M. T. and Band, H. R. and Dasu, S. and Pan, Y. and Prepost, R. and Wu, S. L.},
abstractNote = {We report measurements of partial branching fractions for inclusive charmless semileptonic B decays B¯¯¯→Xulν¯ and the determination of the Cabibbo–Kobayashi–Maskawa (CKM) matrix element |Vub|. The analysis is based on a sample of 467×10⁶ Υ(4S)→BB¯¯¯ decays recorded with the BABAR detector at the PEP-II e⁺e⁻ storage rings. We select events in which the decay of one of the B mesons is fully reconstructed and an electron or a muon signals the semileptonic decay of the other B meson. We measure partial branching fractions ΔB in several restricted regions of phase space and determine the CKM element |Vub| based on different QCD predictions. For decays with a charged lepton momentum p*l>1.0 GeV in the B meson rest frame, we obtain ΔB=(1.80±0.13stat±0.15sys±0.02theo)×10⁻³ from a fit to the two-dimensional MX-q² distribution. Here, MX refers to the invariant mass of the final state hadron X and q² is the invariant mass squared of the charged lepton and neutrino. From this measurement we extract |Vub|=(4.33±0.24exp±0.15theo)×10⁻³ as the arithmetic average of four results obtained from four different QCD predictions of the partial rate. We separately determine partial branching fractions for B¯¯¯0 and B⁻ decays and derive a limit on the isospin breaking in B¯¯¯→Xulν¯ decays.},
doi = {10.1103/PhysRevD.86.032004},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 3,
volume = 86,
place = {United States},
year = {2012},
month = {8}
}

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DOI: 10.1103/PhysRevD.86.032004

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