Measurement of theD0→π−e+νedifferential decay branching fraction as a function ofq2and study of form factor parametrizations

Lees, J.  . p.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D.  . n.; Kerth, L.  . t.; Kolomensky, Y. u.  . g.; Lee, M.  . j.; Lynch, G.; Koch, H.; Schroeder, T.; Hearty, C.; Mattison, T.  . s.; Mckenna, J.  . a.; R.  . y., So; Khan, A.; 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.; Mandelkern, M.; Dey, B.; Gary, J.  . w.; Long, O.; Campagnari, C.; Franco Sevilla, M.; Hong, T.  . m.; Kovalskyi, D.; Richman, J.  . d.; West, C.  . a.; Eisner, A.  . m.; Lockman, W.  . s.; Panduro Vazquez, W.; Schumm, B.  . a.; Seiden, A.; Chao, D.  . s.; Cheng, C.  . h.; Echenard, B.; Flood, K.  . t.; Hitlin, D.  . g.; Miyashita, T.  . s.; Ongmongkolkul, P.; Porter, F.  . c.; Röhrken, M.; Andreassen, R.; Huard, Z.; Meadows, B.  . t.; Pushpawela, B.  . g.; Sokoloff, M.  . d.; Sun, L.; Bloom, P.  . c.; Ford, W.  . t.; Gaz, A.; Smith, J.  . g.; Wagner, S.  . r.; Ayad, R.; Toki, W.  . h.; Spaan, B.; Bernard, D.; Verderi, M.; Playfer, S.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Piemontese, L.; Santoro, V.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Martellotti, S.; Patteri, P.; Peruzzi, I.  . m.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, Roberto; Lo Vetere, Maurizio; Monge, Maria Roberta; Passaggio, S.; Patrignani, Claudia; Robutti, E.; Bhuyan, B.; Prasad, V.; Adametz, A.; Uwer, U.; Lacker, H.  . m.; Dauncey, P.  . d.; Mallik, U.; Chen, C.; Cochran, J.; Prell, S.; Ahmed, H.; Gritsan, A.  . v.; Arnaud, N.; Davier, M.; Derkach, D.; Grosdidier, G.; Le Diberder, F.; Lutz, A.  . m.; Malaescu, B.; Roudeau, P.; Stocchi, A.; Wormser, G.; Lange, D.  . j.; Wright, D.  . m.; Coleman, J.  . p.; Fry, J.  . r.; Gabathuler, E.; Hutchcroft, D.  . e.; Payne, D.  . j.; Touramanis, C.; Bevan, A.  . j.; Di Lodovico, F.; Sacco, R.; Cowan, G.; Bougher, J.; Brown, D.  . n.; 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.; Hamilton, B.; Jawahery, A.; Roberts, D.  . a.; Cowan, R.; Sciolla, G.; Cheaib, R.; Patel, P.  . m.; Robertson, S.  . h.; Neri, N.; Palombo, F.; Cremaldi, L.; Godang, R.; Sonnek, P.; Summers, D.  . j.; Simard, M.; Taras, P.; De Nardo, G.; Onorato, G.; Sciacca, C.; Martinelli, M.; Raven, G.; Jessop, C.  . p.; Losecco, J.  . m.; Honscheid, K.; Kass, R.; Feltresi, E.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simi, G.; Simonetto, F.; Stroili, R.; Akar, S.; Ben Haim, E.; Bomben, M.; Bonneaud, G.  . r.; Briand, H.; Calderini, G.; Chauveau, J.; Leruste, P. h.; Marchiori, G.; Ocariz, J.; Biasini, M.; Manoni, E.; Pacetti, S.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Chrzaszcz, M.; Forti, F.; Giorgi, M.  . a.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Perez, A.; Rizzo, G.; Walsh, J.  . j.; Lopes Pegna, D.; Olsen, J.; Smith, A.  . j.  . s.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Pilloni, A.; Piredda, G.; Bünger, C.; Dittrich, S.; Grünberg, O.; Hess, M.; Leddig, T.; Voß, C.; Waldi, R.; Adye, T.; Olaiya, E.  . o.; Wilson, F.  . f.; Emery, S.; Vasseur, G.; Anulli, F.; Aston, D.; Bard, D.  . j.; Cartaro, C.; Convery, M.  . r.; Dorfan, J.; Dubois Felsmann, G.  . p.; 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.; Lewis, P.; Lindemann, D.; Luitz, S.; Luth, V.; Lynch, H.  . l.; Macfarlane, D.  . b.; Muller, D.  . r.; Neal, H.; 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.; Wisniewski, W.  . j.; Wulsin, H.  . w.; Purohit, M.  . v.; White, R.  . m.; 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.; Ruland, A.  . m.; Schwitters, R.  . f.; Wray, B.  . c.; Izen, J.  . m.; Lou, X.  . c.; Bianchi, F.; De Mori, F.; Filippi, A.; Gamba, D.; Lanceri, L.; Vitale, L.; Martinez Vidal, F.; Oyanguren, A.; Villanueva Perez, P.; Albert, J.; Banerjee, S. w.; Beaulieu, A.; Bernlochner, F.  . u.; Choi, H.  . h.  . f.; King, G.  . j.; Kowalewski, R.; Lewczuk, M.  . j.; Lueck, T.; Nugent, I.  . m.; Roney, J.  . m.; Sobie, R.  . j.; Tasneem, N.; Gershon, T.  . j.; Harrison, P.  . f.; Latham, T.  . e.; Band, H.  . r.; Dasu, S.; Pan, Y.; Prepost, R.; S.  . l., Wu

doi:10.1103/PhysRevD.91.052022

Based on a sample of 500 million e(+)e(-) -> c (c) over bar events recorded by the BABAR detector at c. m. energies of close to 10.6 GeV, we report on a study of the decay D0 ->pi(-)e(+)nu(e). We measure the ratio of branching fractions, R-D = B(D-0 -> pi(-)e(+)nu(e))/beta(D-0 -> K-pi(+)) = 0.0713 +/- 0.0017(stat) +/- 0.0024(syst), and use the present world average for B(D-0 -> K-pi(+)) to obtain B(D-0 -> pi(-)e(+)nu e) = (2.770 +/- 0.068(stat) +/- 0.092(syst) +/- 0.037(ext)) x 10(-3) where the third error accounts for the uncertainty on the branching fraction for the reference channel. The measured dependence of the differential branching fraction on q(2), the four-momentum transfer squared between the D and the pi meson, is compared to various theoretical predictions for the hadronic form factor, f(+,D)(pi)(q(2)), and the normalization vertical bar V-cd vertical bar x f(+,D)(pi)(q(2) = 0) = 0.1374 +/- 0.0038(stat) +/- 0.0022(sys)t +/- 0.0009(ext). is extracted from a fit to data. Using the most recent LQCD prediction of f(+,D)(pi)(q(2) = 0) = 0.666 +/- 0.029, we obtain vertical bar V-cd vertical bar = 0.206 +/- 0.007(exp) +/- 0.009(LQCD). Assuming, instead, vertical bar V-cd vertical bar = vertical bar V-us vertical bar = 0.2252 +/- 0.0009, we obtain f(+,D)(pi)(q(2) = 0) = 0.610 +/- 0.020(exp) +/- 0.005(ext). The q(2) dependence of f(+,D)(pi)(q(2)) is compared to a variety of multipole parametrizations. This information is applied to B-0 -> pi(-)e(+)nu(e) decays and, combined with an earlier B-0 -> pi(-)e(+)nu(e) measurement by BABAR, is used to derive estimates of vertical bar V-ub vertical bar.

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Titolo:	Measurement of theD0→π−e+νedifferential decay branching fraction as a function ofq2and study of form factor parametrizations
Autori:	Lees, J. .p. Poireau, V. Tisserand, V. Grauges, E. Palano, A. Eigen, G. Stugu, B. Brown, D. .n. Kerth, L. .t. Kolomensky, Y.u. .g. Lee, M. .j. Lynch, G. Koch, H. Schroeder, T. Hearty, C. Mattison, T. .s. Mckenna, J. .a. So, R. .y. Khan, A. 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. Mandelkern, M. Dey, B. Gary, J. .w. Long, O. Campagnari, C. Franco Sevilla, M. Hong, T. .m. Kovalskyi, D. Richman, J. .d. West, C. .a. Eisner, A. .m. Lockman, W. .s. Panduro Vazquez, W. Schumm, B. .a. Seiden, A. Chao, D. .s. Cheng, C. .h. Echenard, B. Flood, K. .t. Hitlin, D. .g. Miyashita, T. .s. Ongmongkolkul, P. Porter, F. .c. Röhrken, M. Andreassen, R. Huard, Z. Meadows, B. .t. Pushpawela, B. .g. Sokoloff, M. .d. Sun, L. Bloom, P. .c. Ford, W. .t. Gaz, A. Smith, J. .g. Wagner, S. .r. Ayad, R. Toki, W. .h. Spaan, B. Bernard, D. Verderi, M. Playfer, S. Bettoni, D. Bozzi, C. Calabrese, R. Cibinetto, G. Fioravanti, E. Garzia, I. Luppi, E. Piemontese, L. Santoro, V. Calcaterra, A. de Sangro, R. Finocchiaro, G. Martellotti, S. Patteri, P. Peruzzi, I. .m. Piccolo, M. Rama, M. Zallo, A. CONTRI, ROBERTO LO VETERE, MAURIZIO MONGE, MARIA ROBERTA Passaggio, S. PATRIGNANI, CLAUDIA Robutti, E. Bhuyan, B. Prasad, V. Adametz, A. Uwer, U. Lacker, H. .m. Dauncey, P. .d. Mallik, U. Chen, C. Cochran, J. Prell, S. Ahmed, H. Gritsan, A. .v. Arnaud, N. Davier, M. Derkach, D. Grosdidier, G. Le Diberder, F. Lutz, A. .m. Malaescu, B. Roudeau, P. Stocchi, A. Wormser, G. Lange, D. .j. Wright, D. .m. Coleman, J. .p. Fry, J. .r. Gabathuler, E. Hutchcroft, D. .e. Payne, D. .j. Touramanis, C. Bevan, A. .j. Di Lodovico, F. Sacco, R. Cowan, G. Bougher, J. Brown, D. .n. 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. Hamilton, B. Jawahery, A. Roberts, D. .a. Cowan, R. Sciolla, G. Cheaib, R. Patel, P. .m. Robertson, S. .h. Neri, N. Palombo, F. Cremaldi, L. Godang, R. Sonnek, P. Summers, D. .j. Simard, M. Taras, P. De Nardo, G. Onorato, G. Sciacca, C. Martinelli, M. Raven, G. Jessop, C. .p. Losecco, J. .m. Honscheid, K. Kass, R. Feltresi, E. Margoni, M. Morandin, M. Posocco, M. Rotondo, M. Simi, G. Simonetto, F. Stroili, R. Akar, S. Ben Haim, E. Bomben, M. Bonneaud, G. .r. Briand, H. Calderini, G. Chauveau, J. Leruste, P.h. Marchiori, G. Ocariz, J. Biasini, M. Manoni, E. Pacetti, S. Rossi, A. Angelini, C. Batignani, G. Bettarini, S. Carpinelli, M. Casarosa, G. Cervelli, A. Chrzaszcz, M. Forti, F. Giorgi, M. .a. Lusiani, A. Oberhof, B. Paoloni, E. Perez, A. Rizzo, G. Walsh, J. .j. Lopes Pegna, D. Olsen, J. Smith, A. .j. .s. Faccini, R. Ferrarotto, F. Ferroni, F. Gaspero, M. Li Gioi, L. Pilloni, A. Piredda, G. Bünger, C. Dittrich, S. Grünberg, O. Hess, M. Leddig, T. Voß, C. Waldi, R. Adye, T. Olaiya, E. .o. Wilson, F. .f. Emery, S. Vasseur, G. Anulli, F. Aston, D. Bard, D. .j. Cartaro, C. Convery, M. .r. Dorfan, J. Dubois Felsmann, G. .p. 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. Lewis, P. Lindemann, D. Luitz, S. Luth, V. Lynch, H. .l. Macfarlane, D. .b. Muller, D. .r. Neal, H. 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. Wisniewski, W. .j. Wulsin, H. .w. Purohit, M. .v. White, R. .m. 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. Ruland, A. .m. Schwitters, R. .f. Wray, B. .c. Izen, J. .m. Lou, X. .c. Bianchi, F. De Mori, F. Filippi, A. Gamba, D. Lanceri, L. Vitale, L. Martinez Vidal, F. Oyanguren, A. Villanueva Perez, P. Albert, J. Banerjee, S.w. Beaulieu, A. Bernlochner, F. .u. Choi, H. .h. .f. King, G. .j. Kowalewski, R. Lewczuk, M. .j. Lueck, T. Nugent, I. .m. Roney, J. .m. Sobie, R. .j. Tasneem, N. Gershon, T. .j. Harrison, P. .f. Latham, T. .e. Band, H. .r. Dasu, S. Pan, Y. Prepost, R. Wu, S. .l. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2015
Rivista:	PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract:	Based on a sample of 500 million e(+)e(-) -> c (c) over bar events recorded by the BABAR detector at c. m. energies of close to 10.6 GeV, we report on a study of the decay D0 ->pi(-)e(+)nu(e). We measure the ratio of branching fractions, R-D = B(D-0 -> pi(-)e(+)nu(e))/beta(D-0 -> K-pi(+)) = 0.0713 +/- 0.0017(stat) +/- 0.0024(syst), and use the present world average for B(D-0 -> K-pi(+)) to obtain B(D-0 -> pi(-)e(+)nu e) = (2.770 +/- 0.068(stat) +/- 0.092(syst) +/- 0.037(ext)) x 10(-3) where the third error accounts for the uncertainty on the branching fraction for the reference channel. The measured dependence of the differential branching fraction on q(2), the four-momentum transfer squared between the D and the pi meson, is compared to various theoretical predictions for the hadronic form factor, f(+,D)(pi)(q(2)), and the normalization vertical bar V-cd vertical bar x f(+,D)(pi)(q(2) = 0) = 0.1374 +/- 0.0038(stat) +/- 0.0022(sys)t +/- 0.0009(ext). is extracted from a fit to data. Using the most recent LQCD prediction of f(+,D)(pi)(q(2) = 0) = 0.666 +/- 0.029, we obtain vertical bar V-cd vertical bar = 0.206 +/- 0.007(exp) +/- 0.009(LQCD). Assuming, instead, vertical bar V-cd vertical bar = vertical bar V-us vertical bar = 0.2252 +/- 0.0009, we obtain f(+,D)(pi)(q(2) = 0) = 0.610 +/- 0.020(exp) +/- 0.005(ext). The q(2) dependence of f(+,D)(pi)(q(2)) is compared to a variety of multipole parametrizations. This information is applied to B-0 -> pi(-)e(+)nu(e) decays and, combined with an earlier B-0 -> pi(-)e(+)nu(e) measurement by BABAR, is used to derive estimates of vertical bar V-ub vertical bar.
Handle:	http://hdl.handle.net/11567/812544
Appare nelle tipologie:	01.01 - Articolo su rivista

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