Measurement of D^{0}-D[over ¯]^{0} mixing and CP violation in two-body D^{0} decays

Lees, J.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D.; Kerth, L.; Kolomensky, Y.; Lynch, G.; Koch, H.; Schroeder, T.; Asgeirsson, D.; Hearty, C.; Mattison, T.; Mckenna, J.; So, R.; Khan, A.; Blinov, V.; Buzykaev, A.; Druzhinin, V.; Golubev, V.; Kravchenko, E.; Onuchin, A.; Serednyakov, S.; Skovpen, Y.; Solodov, E.; Todyshev, K.; Yushkov, A.; Bondioli, M.; Kirkby, D.; Lankford, A.; Mandelkern, M.; Atmacan, H.; Gary, J.; Liu, F.; Long, O.; Vitug, G.; Campagnari, C.; Hong, T.; Kovalskyi, D.; Richman, J.; West, C.; Eisner, A.; Kroseberg, J.; Lockman, W.; Martinez, A.; Schumm, B.; Seiden, A.; Chao, D.; Cheng, C.; Echenard, B.; Flood, K.; Hitlin, D.; Ongmongkolkul, P.; Porter, F.; Rakitin, A.; Andreassen, R.; Huard, Z.; Meadows, B.; Sokoloff, M.; Sun, L.; Bloom, P.; Ford, W.; Gaz, A.; Nauenberg, U.; Smith, J.; Wagner, S.; Ayad, R.; Toki, W.; Spaan, B.; Schubert, K.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P.; Playfer, S.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Munerato, M.; Piemontese, L.; Santoro, V.; Baldini Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Patteri, P.; Peruzzi, I.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M.; Passaggio, S.; Patrignani, C.; Robutti, E.; Bhuyan, B.; Prasad, V.; Lee, C.; Morii, M.; Edwards, A.; Adametz, A.; Uwer, U.; Lacker, H.; Lueck, T.; Dauncey, P.; Mallik, U.; Chen, C.; Cochran, J.; Meyer, W.; Prell, S.; Rubin, A.; Gritsan, A.; Guo, Z.; Arnaud, N.; Davier, M.; Derkach, D.; Grosdidier, G.; Le Diberder, F.; Lutz, A.; Malaescu, B.; Roudeau, P.; Schune, M.; Stocchi, A.; Wormser, G.; Lange, D.; Wright, D.; Chavez, C.; Coleman, J.; Fry, J.; Gabathuler, E.; Hutchcroft, D.; Payne, D.; Touramanis, C.; Bevan, A.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.; Brown, D.; Davis, C.; Denig, A.; Fritsch, M.; Gradl, W.; Griessinger, K.; Hafner, A.; Prencipe, E.; Barlow, R.; Jackson, G.; Lafferty, G.; Behn, E.; Cenci, R.; Hamilton, B.; Jawahery, A.; Roberts, D.; Dallapiccola, C.; Cowan, R.; Dujmic, D.; Sciolla, G.; Cheaib, R.; Lindemann, D.; Patel, P.; Robertson, S.; Biassoni, P.; Neri, N.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D.; Nguyen, X.; Simard, M.; Taras, P.; De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.; Martinelli, M.; Raven, G.; Jessop, C.; Losecco, J.; Wang, W.; Honscheid, K.; Kass, R.; Brau, J.; Frey, R.; Sinev, N.; Strom, D.; Torrence, E.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simi, G.; Simonetto, F.; Stroili, R.; Akar, S.; Ben Haim, E.; Bomben, M.; Bonneaud, G.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, P.; 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.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Perez, A.; Rizzo, G.; Walsh, J.; Lopes Pegna, D.; Olsen, J.; Smith, A.; Telnov, A.; Anulli, F.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Li Gioi, L.; Mazzoni, M.; Piredda, G.; Bünger, C.; Grünberg, O.; Hartmann, T.; Leddig, T.; Schröder, H.; Voss, C.; Waldi, R.; Adye, T.; Olaiya, E.; Wilson, F.; Emery, S.; Hamel de Monchenault, G.; Vasseur, G.; Yèche, C.; Aston, D.; Bard, D.; Bartoldus, R.; Benitez, J.; Cartaro, C.; Convery, M.; Dorfan, J.; Dubois Felsmann, G.; Dunwoodie, W.; Ebert, M.; Field, R.; Franco Sevilla, M.; Fulsom, B.; Gabareen, A.; Graham, M.; Grenier, P.; Hast, C.; Innes, W.; Kelsey, M.; Kim, P.; Kocian, M.; Leith, D.; Lewis, P.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H.; Macfarlane, D.; Muller, D.; Neal, H.; Nelson, S.; Perl, M.; Pulliam, T.; Ratcliff, B.; Roodman, A.; Salnikov, A.; Schindler, R.; Snyder, A.; Su, D.; Sullivan, M.; Va’Vra, J.; Wagner, A.; Wisniewski, W.; Wittgen, M.; Wright, D.; Wulsin, H.; Young, C.; Ziegler, V.; Park, W.; Purohit, M.; White, R.; Wilson, J.; Randle Conde, A.; Sekula, S.; Bellis, M.; Burchat, P.; Miyashita, T.; Puccio, E.; Alam, M.; Ernst, J.; Gorodeisky, R.; Guttman, N.; Peimer, D.; Soffer, A.; Lund, P.; Spanier, S.; Ritchie, J.; Ruland, A.; Schwitters, R.; Wray, B.; Izen, J.; Lou, X.; Bianchi, F.; Gamba, D.; Zambito, S.; Lanceri, L.; Vitale, L.; Martinez Vidal, F.; Oyanguren, A.; Ahmed, H.; Albert, J.; Banerjee, S.; Bernlochner, F.; Choi, H.; King, G.; Kowalewski, R.; Lewczuk, M.; Nugent, I.; Roney, J.; Sobie, R.; Tasneem, N.; Gershon, T.; Harrison, P.; Latham, T.; Band, H.; Dasu, S.; Pan, Y.; Prepost, R.; Wu, S.

doi:10.1103/PhysRevD.87.012004

We present a measurement of D0-D̅ 0 mixing and CP violation using the ratio of lifetimes simultaneously extracted from a sample of D0 mesons produced through the flavor-tagged process D*+→D0π+, where D0 decays to K∓π±, K-K+, or π-π+, along with the untagged decays D0→K∓π± and D0→K-K+. The lifetimes of the CP-even, Cabibbo-suppressed modes K-K+ and π-π+ are compared to that of the CP-mixed mode K∓π± in order to measure yCP and ΔY. We obtain yCP=[0.72±0.18(stat)±0.12(syst)]% and ΔY=[0.09±0.26(stat)±0.06(syst)]%, where ΔY constrains possible CP violation. The yCP result excludes the null mixing hypothesis at 3.3σ significance. This analysis is based on an integrated luminosity of 468 fb-1 collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider.

Measurement of D^{0}-D[over ¯]^{0} mixing and CP violation in two-body D^{0} decays / J. Lees, V. Poireau, V. Tisserand, J. Garra Tico, E. Grauges, A. Palano, G. Eigen, B. Stugu, D. Brown, L. Kerth, Y. Kolomensky, G. Lynch, H. Koch, T. Schroeder, D. Asgeirsson, C. Hearty, T. Mattison, J. McKenna, R. So, A. Khan, V. Blinov, A. Buzykaev, V. Druzhinin, V. Golubev, E. Kravchenko, A. Onuchin, S. Serednyakov, Y. Skovpen, E. Solodov, K. Todyshev, A. Yushkov, M. Bondioli, D. Kirkby, A. Lankford, M. Mandelkern, H. Atmacan, J. Gary, F. Liu, O. Long, G. Vitug, C. Campagnari, T. Hong, D. Kovalskyi, J. Richman, C. West, A. Eisner, J. Kroseberg, W. Lockman, A. Martinez, B. Schumm, A. Seiden, D. Chao, C. Cheng, B. Echenard, K. Flood, D. Hitlin, P. Ongmongkolkul, F. Porter, A. Rakitin, R. Andreassen, Z. Huard, B. Meadows, M. Sokoloff, L. Sun, P. Bloom, W. Ford, A. Gaz, U. Nauenberg, J. Smith, S. Wagner, R. Ayad, W. Toki, B. Spaan, K. Schubert, R. Schwierz, D. Bernard, M. Verderi, P. Clark, S. Playfer, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, M. Munerato, L. Piemontese, V. Santoro, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, P. Patteri, I. Peruzzi, M. Piccolo, M. Rama, A. Zallo, R. Contri, E. Guido, M. Lo Vetere, M. Monge, S. Passaggio, C. Patrignani, E. Robutti, B. Bhuyan, V. Prasad, C. Lee, M. Morii, A. Edwards, A. Adametz, U. Uwer, H. Lacker, T. Lueck, P. Dauncey, U. Mallik, C. Chen, J. Cochran, W. Meyer, S. Prell, A. Rubin, A. Gritsan, Z. Guo, N. Arnaud, M. Davier, D. Derkach, G. Grosdidier, F. Le Diberder, A. Lutz, B. Malaescu, P. Roudeau, M. Schune, A. Stocchi, G. Wormser, D. Lange, D. Wright, C. Chavez, J. Coleman, J. Fry, E. Gabathuler, D. Hutchcroft, D. Payne, C. Touramanis, A. Bevan, F. Di Lodovico, R. Sacco, M. Sigamani, G. Cowan, D. Brown, C. Davis, A. Denig, M. Fritsch, W. Gradl, K. Griessinger, A. Hafner, E. Prencipe, R. Barlow, G. Jackson, G. Lafferty, E. Behn, R. Cenci, B. Hamilton, A. Jawahery, D. Roberts, C. Dallapiccola, R. Cowan, D. Dujmic, G. Sciolla, R. Cheaib, D. Lindemann, P. Patel, S. Robertson, P. Biassoni, N. Neri, F. Palombo, S. Stracka, L. Cremaldi, R. Godang, R. Kroeger, P. Sonnek, D. Summers, X. Nguyen, M. Simard, P. Taras, G. De Nardo, D. Monorchio, G. Onorato, C. Sciacca, M. Martinelli, G. Raven, C. Jessop, J. LoSecco, W. Wang, K. Honscheid, R. Kass, J. Brau, R. Frey, N. Sinev, D. Strom, E. Torrence, E. Feltresi, N. Gagliardi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. Bonneaud, H. Briand, G. Calderini, J. Chauveau, O. Hamon, P. Leruste, G. Marchiori, J. Ocariz, S. Sitt, M. Biasini, E. Manoni, S. Pacetti, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, F. Forti, M. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, A. Perez, G. Rizzo, J. Walsh, D. Lopes Pegna, J. Olsen, A. Smith, A. Telnov, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M. Mazzoni, G. Piredda, C. Bünger, O. Grünberg, T. Hartmann, T. Leddig, H. Schröder, C. Voss, R. Waldi, T. Adye, E. Olaiya, F. Wilson, S. Emery, G. Hamel de Monchenault, G. Vasseur, C. Yèche, D. Aston, D. Bard, R. Bartoldus, J. Benitez, C. Cartaro, M. Convery, J. Dorfan, G. Dubois-Felsmann, W. Dunwoodie, M. Ebert, R. Field, M. Franco Sevilla, B. Fulsom, A. Gabareen, M. Graham, P. Grenier, C. Hast, W. Innes, M. Kelsey, P. Kim, M. Kocian, D. Leith, P. Lewis, B. Lindquist, S. Luitz, V. Luth, H. Lynch, D. MacFarlane, D. Muller, H. Neal, S. Nelson, M. Perl, T. Pulliam, B. Ratcliff, A. Roodman, A. Salnikov, R. Schindler, A. Snyder, D. Su, M. Sullivan, J. Va’vra, A. Wagner, W. Wisniewski, M. Wittgen, D. Wright, H. Wulsin, C. Young, V. Ziegler, W. Park, M. Purohit, R. White, J. Wilson, A. Randle-Conde, S. Sekula, M. Bellis, P. Burchat, T. Miyashita, E. Puccio, M. Alam, J. Ernst, R. Gorodeisky, N. Guttman, D. Peimer, A. Soffer, P. Lund, S. Spanier, J. Ritchie, A. Ruland, R. Schwitters, B. Wray, J. Izen, X. Lou, F. Bianchi, D. Gamba, S. Zambito, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, H. Ahmed, J. Albert, S. Banerjee, F. Bernlochner, H. Choi, G. King, R. Kowalewski, M. Lewczuk, I. Nugent, J. Roney, R. Sobie, N. Tasneem, T. Gershon, P. Harrison, T. Latham, H. Band, S. Dasu, Y. Pan, R. Prepost, S. Wu. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:1(2013), pp. 012004.012004.1-012004.012004.12.

Measurement of D^{0}-D[over ¯]^{0} mixing and CP violation in two-body D^{0} decays

J. Lees;V. Poireau;V. Tisserand;J. Garra Tico;E. Grauges;A. Palano;G. Eigen;B. Stugu;D. Brown;L. Kerth;Y. Kolomensky;G. Lynch;H. Koch;T. Schroeder;D. Asgeirsson;C. Hearty;T. Mattison;J. McKenna;R. So;A. Khan;V. Blinov;A. Buzykaev;V. Druzhinin;V. Golubev;E. Kravchenko;A. Onuchin;S. Serednyakov;Y. Skovpen;E. Solodov;K. Todyshev;A. Yushkov;M. Bondioli;D. Kirkby;A. Lankford;M. Mandelkern;H. Atmacan;J. Gary;F. Liu;O. Long;G. Vitug;C. Campagnari;T. Hong;D. Kovalskyi;J. Richman;C. West;A. Eisner;J. Kroseberg;W. Lockman;A. Martinez;B. Schumm;A. Seiden;D. Chao;C. Cheng;B. Echenard;K. Flood;D. Hitlin;P. Ongmongkolkul;F. Porter;A. Rakitin;R. Andreassen;Z. Huard;B. Meadows;M. Sokoloff;L. Sun;P. Bloom;W. Ford;A. Gaz;U. Nauenberg;J. Smith;S. Wagner;R. Ayad;W. Toki;B. Spaan;K. Schubert;R. Schwierz;D. Bernard;M. Verderi;P. Clark;S. Playfer;D. Bettoni;C. Bozzi;R. Calabrese;G. Cibinetto;E. Fioravanti;I. Garzia;E. Luppi;M. Munerato;L. Piemontese;V. Santoro;R. Baldini Ferroli;A. Calcaterra;R. de Sangro;G. Finocchiaro;P. Patteri;I. Peruzzi;M. Piccolo;M. Rama;A. Zallo;R. Contri;E. Guido;M. Lo Vetere;M. Monge;S. Passaggio;C. Patrignani;E. Robutti;B. Bhuyan;V. Prasad;C. Lee;M. Morii;A. Edwards;A. Adametz;U. Uwer;H. Lacker;T. Lueck;P. Dauncey;U. Mallik;C. Chen;J. Cochran;W. Meyer;S. Prell;A. Rubin;A. Gritsan;Z. Guo;N. Arnaud;M. Davier;D. Derkach;G. Grosdidier;F. Le Diberder;A. Lutz;B. Malaescu;P. Roudeau;M. Schune;A. Stocchi;G. Wormser;D. Lange;D. Wright;C. Chavez;J. Coleman;J. Fry;E. Gabathuler;D. Hutchcroft;D. Payne;C. Touramanis;A. Bevan;F. Di Lodovico;R. Sacco;M. Sigamani;G. Cowan;D. Brown;C. Davis;A. Denig;M. Fritsch;W. Gradl;K. Griessinger;A. Hafner;E. Prencipe;R. Barlow;G. Jackson;G. Lafferty;E. Behn;R. Cenci;B. Hamilton;A. Jawahery;D. Roberts;C. Dallapiccola;R. Cowan;D. Dujmic;G. Sciolla;R. Cheaib;D. Lindemann;P. Patel;S. Robertson;P. Biassoni;N. Neri;F. Palombo;S. Stracka;L. Cremaldi;R. Godang;R. Kroeger;P. Sonnek;D. Summers;X. Nguyen;M. Simard;P. Taras;G. De Nardo;D. Monorchio;G. Onorato;C. Sciacca;M. Martinelli;G. Raven;C. Jessop;J. LoSecco;W. Wang;K. Honscheid;R. Kass;J. Brau;R. Frey;N. Sinev;D. Strom;E. Torrence;E. Feltresi;N. Gagliardi;M. Margoni;M. Morandin;M. Posocco;M. Rotondo;G. Simi;F. Simonetto;R. Stroili;S. Akar;E. Ben Haim;M. Bomben;G. Bonneaud;H. Briand;G. Calderini;J. Chauveau;O. Hamon;P. Leruste;G. Marchiori;J. Ocariz;S. Sitt;M. Biasini;E. Manoni;S. Pacetti;A. Rossi;C. Angelini;G. Batignani;S. Bettarini;M. Carpinelli;G. Casarosa;A. Cervelli;F. Forti;M. Giorgi;A. Lusiani;B. Oberhof;E. Paoloni;A. Perez;G. Rizzo;J. Walsh;D. Lopes Pegna;J. Olsen;A. Smith;A. Telnov;F. Anulli;R. Faccini;F. Ferrarotto;F. Ferroni;M. Gaspero;L. Li Gioi;M. Mazzoni;G. Piredda;C. Bünger;O. Grünberg;T. Hartmann;T. Leddig;H. Schröder;C. Voss;R. Waldi;T. Adye;E. Olaiya;F. Wilson;S. Emery;G. Hamel de Monchenault;G. Vasseur;C. Yèche;D. Aston;D. Bard;R. Bartoldus;J. Benitez;C. Cartaro;M. Convery;J. Dorfan;G. Dubois Felsmann;W. Dunwoodie;M. Ebert;R. Field;M. Franco Sevilla;B. Fulsom;A. Gabareen;M. Graham;P. Grenier;C. Hast;W. Innes;M. Kelsey;P. Kim;M. Kocian;D. Leith;P. Lewis;B. Lindquist;S. Luitz;V. Luth;H. Lynch;D. MacFarlane;D. Muller;H. Neal;S. Nelson;M. Perl;T. Pulliam;B. Ratcliff;A. Roodman;A. Salnikov;R. Schindler;A. Snyder;D. Su;M. Sullivan;J. Va’vra;A. Wagner;W. Wisniewski;M. Wittgen;D. Wright;H. Wulsin;C. Young;V. Ziegler;W. Park;M. Purohit;R. White;J. Wilson;A. Randle Conde;S. Sekula;M. Bellis;P. Burchat;T. Miyashita;E. Puccio;M. Alam;J. Ernst;R. Gorodeisky;N. Guttman;D. Peimer;A. Soffer;P. Lund;S. Spanier;J. Ritchie;A. Ruland;R. Schwitters;B. Wray;J. Izen;X. Lou;F. Bianchi;D. Gamba;S. Zambito;L. Lanceri;L. Vitale;F. Martinez Vidal;A. Oyanguren;H. Ahmed;J. Albert;S. Banerjee;F. Bernlochner;H. Choi;G. King;R. Kowalewski;M. Lewczuk;I. Nugent;J. Roney;R. Sobie;N. Tasneem;T. Gershon;P. Harrison;T. Latham;H. Band;S. Dasu;Y. Pan;R. Prepost;S. Wu

2013

Abstract

We present a measurement of D0-D̅ 0 mixing and CP violation using the ratio of lifetimes simultaneously extracted from a sample of D0 mesons produced through the flavor-tagged process D*+→D0π+, where D0 decays to K∓π±, K-K+, or π-π+, along with the untagged decays D0→K∓π± and D0→K-K+. The lifetimes of the CP-even, Cabibbo-suppressed modes K-K+ and π-π+ are compared to that of the CP-mixed mode K∓π± in order to measure yCP and ΔY. We obtain yCP=[0.72±0.18(stat)±0.12(syst)]% and ΔY=[0.09±0.26(stat)±0.06(syst)]%, where ΔY constrains possible CP violation. The yCP result excludes the null mixing hypothesis at 3.3σ significance. This analysis is based on an integrated luminosity of 468 fb-1 collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider.

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				Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				2013
			
	Rivista in ANCE
	
				PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
			
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				https://dx.doi.org/10.1103/PhysRevD.87.012004
			
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