Measurement of the inclusive electron spectrum from B meson decays and determination of |Vub

Autor: Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. u. G., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., Mckenna, J. A., R. Y., So, Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. u. I., Solodov, E. P., Todyshev, K. Y. u., Lankford, A. J., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Rã¶hrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., De Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Ahmed, H., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S. w., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Cheaib, R., Robertson, S. H., Dey, B., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bã¼nger, C., Dittrich, S., Grã¼nberg, O., Heãÿ, M., Leddig, T., Voãÿ, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Luth, V., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., S. L., Wu
Přispěvatelé: Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, BaBar, Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D.N., Kolomensky, Yu.G., Koch, H., Schroeder, T., Hearty, C., Mattison, T.S., Mckenna, J.A., So, R.Y., 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., Lankford, A.J., Gary, J.W., Long, O., Eisner, A.M., Lockman, W.S., Panduro Vazquez, W., Chao, D.S., Cheng, C.H., Echenard, B., Flood, K.T., Hitlin, D.G., Kim, J., Miyashita, T.S., Ongmongkolkul, P., Porter, F.C., Röhrken, M., Huard, Z., Meadows, B.T., Pushpawela, B.G., Sokoloff, M.D., Sun, L., Smith, J.G., Wagner, S.R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., De Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I.M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Ahmed, H., Gritsan, A.V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A.M., Wormser, G., Lange, D.J., Wright, D.M., Coleman, J.P., Gabathuler, E., Hutchcroft, D.E., Payne, D.J., Touramanis, C., Bevan, A.J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C.L., Denig, A.G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Schubert, K.R., Barlow, R.J., Lafferty, G.D., Cenci, R., Jawahery, A., Roberts, D.A., Cowan, R., Cheaib, R., Robertson, S.H., Dey, B., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D.J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C.P., Losecco, J.M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G.R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M.A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J.J., Smith, A.J.S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bünger, C., Dittrich, S., Grünberg, O., Heß, M., Leddig, T., Voß, C., Waldi, R., Adye, T., Wilson, F.F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M.R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R.C., Fulsom, B.G., Graham, M.T., Hast, C., Innes, W.R., Kim, P., Leith, D.W.G.S., Luitz, S., Luth, V., Macfarlane, D.B., Muller, D.R., Neal, H., Ratcliff, B.N., Roodman, A., Sullivan, M.K., Va'Vra, J., Wisniewski, W.J., Purohit, M.V., Wilson, J.R., Randle-Conde, A., Sekula, S.J., Bellis, M., Burchat, P.R., Puccio, E.M.T., Alam, M.S., Ernst, J.A., Gorodeisky, R., Guttman, N., Peimer, D.R., Soffer, A., Spanier, S.M., Ritchie, J.L., Schwitters, R.F., Izen, J.M., Lou, X.C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F.U., King, G.J., Kowalewski, R., Lueck, T., Nugent, I.M., Roney, J.M., Tasneem, N., Gershon, T.J., Harrison, P.F., Latham, T.E., Prepost, R., Wu, S.L., Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Koch, H, Schroeder, T, Hearty, C, Mattison, T, Mckenna, J, So, R, Blinov, V, Buzykaev, A, Druzhinin, V, Golubev, V, Kravchenko, E, Onuchin, A, Serednyakov, S, Skovpen, Y, Solodov, E, Todyshev, K, Lankford, A, Gary, J, Long, O, Eisner, A, Lockman, W, Panduro Vazquez, W, Chao, D, Cheng, C, Echenard, B, Flood, K, Hitlin, D, Kim, J, Miyashita, T, Ongmongkolkul, P, Porter, F, Röhrken, M, Huard, Z, Meadows, B, Pushpawela, B, Sokoloff, M, Sun, L, Smith, J, Wagner, S, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, I, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Gritsan, A, Arnaud, N, Davier, M, Le Diberder, F, Lutz, A, Wormser, G, Lange, D, Wright, D, Coleman, J, Gabathuler, E, Hutchcroft, D, Payne, D, Touramanis, C, Bevan, A, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, C, Denig, A, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, K, Barlow, R, Lafferty, G, Cenci, R, Jawahery, A, Roberts, D, Cowan, R, Cheaib, R, Robertson, S, Dey, B, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, D, Taras, P, De Nardo, G, Sciacca, C, Raven, G, Jessop, C, Losecco, J, Honscheid, K, Kass, R, Gaz, A, Margoni, M, Posocco, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben Haim, E, Bomben, M, Bonneaud, G, Calderini, G, Chauveau, J, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, Forti, F, Giorgi, M, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, J, Smith, A, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Piredda, G, Bünger, C, Dittrich, S, Grünberg, O, Heß, M, Leddig, T, Voß, C, Waldi, R, Adye, T, Wilson, F, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, M, Dorfan, J, Dunwoodie, W, Ebert, M, Field, R, Fulsom, B, Graham, M, Hast, C, Innes, W, Kim, P, Leith, D, Luitz, S, Luth, V, Macfarlane, D, Muller, D, Neal, H, Ratcliff, B, Roodman, A, Sullivan, M, Va’Vra, J, Wisniewski, W, Purohit, M, Wilson, J, Randle Conde, A, Sekula, S, Bellis, M, Burchat, P, Puccio, E, Alam, M, Ernst, J, Gorodeisky, R, Guttman, N, Peimer, D, Soffer, A, Spanier, S, Ritchie, J, Schwitters, R, Izen, J, Lou, X, Bianchi, F, De Mori, F, Filippi, A, Gamba, D, Lanceri, L, Vitale, L, Martinez Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, F, King, G, Kowalewski, R, Lueck, T, Nugent, I, Roney, J, Tasneem, N, Gershon, T, Harrison, P, Latham, T, Prepost, R, Wu, S, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Lees, J. . p., Brown, D. . n., Kolomensky, Y. u. . g., Mattison, T. . s., Mckenna, J. . a., So, R. . y., Blinov, V. . e., Buzykaev, A. . r., Druzhinin, V. . p., Golubev, V. . b., Kravchenko, E. . a., Onuchin, A. . p., Serednyakov, S. . i., Skovpen, Y. u. . i., Solodov, E. . p., Todyshev, K. . y. u., Lankford, A. . j., Gary, J. . w., Eisner, A. . m., Lockman, W. . s., Chao, D. . s., Cheng, C. . h., Flood, K. . t., Hitlin, D. . g., Miyashita, T. . s., Porter, F. . c., Meadows, B. . t., Pushpawela, B. . g., Sokoloff, M. . d., Smith, J. . g., Wagner, S. . r., de Sangro, R., Peruzzi, I. . m., Gritsan, A. . v., Lutz, A. . m., Lange, D. . j., Wright, D. . m., Coleman, J. . p., Hutchcroft, D. . e., Payne, D. . j., Bevan, A. . j., Banerjee, S. w., Davis, C. . l., Denig, A. . g., Schubert, K. . r., Barlow, R. . j., Lafferty, G. . d., Roberts, D. . a., Robertson, S. . h., Summers, D. . j., DE NARDO, Guglielmo, Jessop, C. . p., Losecco, J. . m., Ben Haim, E., Bonneaud, G. . r., Giorgi, M. . a., Walsh, J. . j., Smith, A. . j. . s., Wilson, F. . f., Convery, M. . r., Field, R. . c., Fulsom, B. . g., Graham, M. . t., Innes, W. . r., Leith, D. . w. . g. . s., Macfarlane, D. . b., Muller, D. . r., Ratcliff, B. . n., Sullivan, M. . k., Va’Vra, J., Wisniewski, W. . j., Purohit, M. . v., Wilson, J. . r., Randle Conde, A., Sekula, S. . j., Burchat, P. . r., Puccio, E. . m. . t., Alam, M. . s., Ernst, J. . a., Peimer, D. . r., Spanier, S. . m., Ritchie, J. . l., Schwitters, R. . f., Izen, J. . m., Lou, X. . c., Martinez Vidal, F., Bernlochner, F. . u., King, G. . j., Nugent, I. . m., Roney, J. . m., Gershon, T. . j., Harrison, P. . f., Latham, T. . e., Wu, S. . l., Lees, J. P., Brown, D. N., Kolomensky, Yu. G., Mattison, T. S., Mckenna, J. A., So, R. Y., 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., Lankford, A. J., Gary, J. W., Eisner, A. M., Lockman, W. S., Chao, D. S., Cheng, C. H., Flood, K. T., Hitlin, D. G., Miyashita, T. S., Porter, F. C., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Smith, J. G., Wagner, S. R., Peruzzi, I. M., Gritsan, A. V., Lutz, A. M., Lange, D. J., Wright, D. M., Coleman, J. P., Hutchcroft, D. E., Payne, D. J., Bevan, A. J., Davis, C. L., Denig, A. G., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Roberts, D. A., Robertson, S. H., Summers, D. J., Jessop, C. P., Losecco, J. M., Bonneaud, G. R., Giorgi, M. A., Walsh, J. J., Smith, A. J. S., Wilson, F. F., Convery, M. R., Field, R. C., Fulsom, B. G., Graham, M. T., Innes, W. R., Leith, D. W. G. S., Macfarlane, D. B., Muller, D. R., Ratcliff, B. N., Sullivan, M. K., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Sekula, S. J., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Peimer, D. R., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bernlochner, F. U., King, G. J., Nugent, I. M., Roney, J. M., Gershon, T. J., Harrison, P. F., Latham, T. E., Wu, S. L.
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Phys.Rev.D
Phys.Rev.D, 2017, 95 (7), pp.072001. ⟨10.1103/PhysRevD.95.072001⟩
DOI: 10.1103/PhysRevD.95.072001⟩
Popis: Based on the full BaBar data sample of 466.5 million BBbar pairs, we present measurements of the electron spectrum from semileptonic B meson decays. We fit the inclusive electron spectrum to distinguish Cabibbo-Kobayashi-Maskawa (CKM) suppressed B -> Xu e nu decays from the CKM-favored B -> Xc e nu decays, and from various other backgrounds, and determine the total semileptonic branching fraction BR(B -> X e nu) = (10.34 +- 0.04_stat +- 0.26_syst)%, averaged over B+- and B0 mesons. We determine the spectrum and branching fraction for charmless B -> Xu e nu decays and extract the CKM element |Vub|, by relying on four different QCD calculations based on the heavy quark expansion. While experimentally, the electron momentum region above 2.1GeV/c is favored, because the background is relatively low, the uncertainties for the theoretical predictions are largest in the region near the kinematic endpoint. Detailed studies to assess the impact of these four predictions on the measurements of the electron spectrum, the branching fraction, and the extraction of the CKM matrix element |Vub| are presented, with the lower limit on the electron momentum varied from 0.8GeV/c to the kinematic endpoint. We determine |Vub| using each of these different calculations and find, |Vub| = (3.794 +- 0.107_exp +0.292-0.219_SF +0.078-0.068_theory)*10^{-3} (De Fazio and Neubert), (4.563 +- 0.126_exp +0.230-0.208_SF +0.162-0.163_theory)*10^{-3} (Bosh, Lange, Neubert, and Paz), (3.959 +- 0.104_exp +0.164-0.154_SF +0.042-0.079_theory)*10^{-3} (Gambino, Giordano, Ossola, and Uraltsev), (3.848 +- 0.108_exp +0.084-0.070_theory)*10^{-3} (dressed gluon exponentiation), where the stated uncertainties refer to the experimental uncertainties of the partial branching fraction measurement, the shape function parameters, and the theoretical calculations.
27 pages, 42 postscript figures, Published in Phys. Rev. D95, 072001 (2017)
Databáze: OpenAIRE
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