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We report on measurements of the decays of B¯ mesons into the semileptonic final states B¯→D^(*)π^(+)π^(-)ℓ^(-)ν¯, where D^(*) represents a D or D^(*) meson and ℓ^(-) is an electron or a muon. These measurements are based on 471×10^(6) BB ¯ pairs recorded with the BABAR detector at the SLAC asymmetric B factory PEP-II. We determine the branching fraction ratios R_π^+π^-^(*)=B(B[over ¯]→D^(*)π^+π^-ℓ^-ν[over ¯])/B(B[over ¯]→D^(*)ℓ^-ν[over ¯]) using events in which the second B meson is fully reconstructed. We find R_π^+π^-=0.067±0.010±0.008 and R_π^+π^-^*=0.019±0.005±0.004, where the first uncertainty is statistical and the second is systematic. Based on these results and assuming isospin invariance, we estimate that B[over ¯]→D^(*)ππℓ^-ν[over ¯] decays, where π denotes either a π^± and π^0 meson, account for up to half the difference between the measured inclusive semileptonic branching fraction to charm hadrons and the corresponding sum of previously measured exclusive branching fractions.
Observation of B→D(*) π^(+)π^(-)ℓ^(-)ν Decays in e^(+)e^(-) Collisions at the Υ(4S) Resonance / Lees, J. P; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D. N; Kerth, L. T; Kolomensky, Yu 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, Yu I; Solodov, E. P; Todyshev, K. Yu; Lankford, A. J; Gary, J. W; Long, O; 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; Kim, J; 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; Ford, W. T; 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; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, I. M; Piccolo, M; Zallo, A; Contri, R; Monge, M. R; Passaggio, S; Patrignani, C; Bhuyan, B; Prasad, V; Adametz, A; Uwer, U; Lacker, H. M; 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; 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; Cheaib, R; Patel, P. M; Robertson, S. H; Dey, B; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, D. J; Simard, M; Taras, P; DE NARDO, Guglielmo; Onorato, G; Sciacca, C; Raven, G; Jessop, C. P; Losecco, J. M; Honscheid, K; Kass, R; 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, Ph; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Angelini, C; 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; Lopes Pegna, D; Olsen, J; Smith, A. J. S; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; 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; 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; Luitz, S; Luth, V; Macfarlane, D. B; Muller, D. R; Neal, H; Pulliam, T; Ratcliff, B. N; Roodman, A; Schindler, R. H; Snyder, A; Su, D; Sullivan, M. K; Va'Vra, J; Wisniewski, W. J; Wulsin, H. W; 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; Banerjee, Sw; 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.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 116:4(2016), p. 041801. [10.1103/PhysRevLett.116.041801]
Observation of B→D(*) π^(+)π^(-)ℓ^(-)ν Decays in e^(+)e^(-) Collisions at the Υ(4S) Resonance
Lees, J. P;Poireau, V;Tisserand, V;Grauges, E;Palano, A;Eigen, G;Stugu, B;Brown, D. N;Kerth, L. T;Kolomensky, Yu 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, Yu I;Solodov, E. P;Todyshev, K. Yu;Lankford, A. J;Gary, J. W;Long, O;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;Kim, J;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;Ford, W. T;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;Santoro, V;Calcaterra, A;de Sangro, R;Finocchiaro, G;Martellotti, S;Patteri, P;Peruzzi, I. M;Piccolo, M;Zallo, A;Contri, R;Monge, M. R;Passaggio, S;Patrignani, C;Bhuyan, B;Prasad, V;Adametz, A;Uwer, U;Lacker, H. M;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;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;Cheaib, R;Patel, P. M;Robertson, S. H;Dey, B;Neri, N;Palombo, F;Cremaldi, L;Godang, R;Summers, D. J;Simard, M;Taras, P;DE NARDO, GUGLIELMO;Onorato, G;Sciacca, C;Raven, G;Jessop, C. P;Losecco, J. M;Honscheid, K;Kass, R;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, Ph;Marchiori, G;Ocariz, J;Biasini, M;Manoni, E;Rossi, A;Angelini, C;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;Lopes Pegna, D;Olsen, J;Smith, A. J. S;Anulli, F;Faccini, R;Ferrarotto, F;Ferroni, F;Gaspero, M;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;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;Luitz, S;Luth, V;Macfarlane, D. B;Muller, D. R;Neal, H;Pulliam, T;Ratcliff, B. N;Roodman, A;Schindler, R. H;Snyder, A;Su, D;Sullivan, M. K;Va'Vra, J;Wisniewski, W. J;Wulsin, H. W;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;Banerjee, Sw;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.
2016
Abstract
We report on measurements of the decays of B¯ mesons into the semileptonic final states B¯→D^(*)π^(+)π^(-)ℓ^(-)ν¯, where D^(*) represents a D or D^(*) meson and ℓ^(-) is an electron or a muon. These measurements are based on 471×10^(6) BB ¯ pairs recorded with the BABAR detector at the SLAC asymmetric B factory PEP-II. We determine the branching fraction ratios R_π^+π^-^(*)=B(B[over ¯]→D^(*)π^+π^-ℓ^-ν[over ¯])/B(B[over ¯]→D^(*)ℓ^-ν[over ¯]) using events in which the second B meson is fully reconstructed. We find R_π^+π^-=0.067±0.010±0.008 and R_π^+π^-^*=0.019±0.005±0.004, where the first uncertainty is statistical and the second is systematic. Based on these results and assuming isospin invariance, we estimate that B[over ¯]→D^(*)ππℓ^-ν[over ¯] decays, where π denotes either a π^± and π^0 meson, account for up to half the difference between the measured inclusive semileptonic branching fraction to charm hadrons and the corresponding sum of previously measured exclusive branching fractions.
Observation of B→D(*) π^(+)π^(-)ℓ^(-)ν Decays in e^(+)e^(-) Collisions at the Υ(4S) Resonance / Lees, J. P; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D. N; Kerth, L. T; Kolomensky, Yu 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, Yu I; Solodov, E. P; Todyshev, K. Yu; Lankford, A. J; Gary, J. W; Long, O; 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; Kim, J; 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; Ford, W. T; 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; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, I. M; Piccolo, M; Zallo, A; Contri, R; Monge, M. R; Passaggio, S; Patrignani, C; Bhuyan, B; Prasad, V; Adametz, A; Uwer, U; Lacker, H. M; 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; 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; Cheaib, R; Patel, P. M; Robertson, S. H; Dey, B; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, D. J; Simard, M; Taras, P; DE NARDO, Guglielmo; Onorato, G; Sciacca, C; Raven, G; Jessop, C. P; Losecco, J. M; Honscheid, K; Kass, R; 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, Ph; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Angelini, C; 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; Lopes Pegna, D; Olsen, J; Smith, A. J. S; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; 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; 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; Luitz, S; Luth, V; Macfarlane, D. B; Muller, D. R; Neal, H; Pulliam, T; Ratcliff, B. N; Roodman, A; Schindler, R. H; Snyder, A; Su, D; Sullivan, M. K; Va'Vra, J; Wisniewski, W. J; Wulsin, H. W; 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; Banerjee, Sw; 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.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 116:4(2016), p. 041801. [10.1103/PhysRevLett.116.041801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/670845
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.
