Direct CP violating asymmetry in B0-->K+pi- decays

B Aubert; R Barate; D Boutigny; F Couderc; J-M Gaillard; A Hicheur; Y Karyotakis; J P Lees; V Tisserand; A Zghiche; A Palano; A Pompili; J C Chen; N D Qi; G Rong; P Wang; Y S Zhu; G Eigen; I Ofte; B Stugu; G S Abrams; A W Borgland; A B Breon; D N Brown; J Button-Shafer; R N Cahn; E Charles; C T Day; M S Gill; A V Gritsan; Y Groysman; R G Jacobsen; R W Kadel; J Kadyk; L T Kerth; Yu G Kolomensky; G Kukartsev; G Lynch; L M Mir; P J Oddone; T J Orimoto; M Pripstein; N A Roe; M T Ronan; V G Shelkov; W A Wenzel; M Barrett; K E Ford; T J Harrison; A J Hart; C M Hawkes; S E Morgan; A T Watson; M Fritsch; K Goetzen; T Held; H Koch; B Lewandowski; M Pelizaeus; M Steinke; J T Boyd; N Chevalier; W N Cottingham; M P Kelly; T E Latham; F F Wilson; T Cuhadar-Donszelmann; C Hearty; N S Knecht; T S Mattison; J A McKenna; D Thiessen; A Khan; P Kyberd; L Teodorescu; A E Blinov; V E Blinov; V P Druzhinin; V B Golubev; V N Ivanchenko; E A Kravchenko; A P Onuchin; S I Serednyakov; Yu I Skovpen; E P Solodov; A N Yushkov; D Best; M Bruinsma; M Chao; I Eschrich; D Kirkby; A J Lankford; M Mandelkern; R K Mommsen; W Roethel; D P Stoker; C Buchanan; B L Hartfiel; S D Foulkes; J W Gary; B C Shen; K Wang; D del Re; H K Hadavand; E J Hill; D B MacFarlane; H P Paar; Sh Rahatlou; V Sharma; J W Berryhill; C Campagnari; B Dahmes; O Long; A Lu; M A Mazur; J D Richman; W Verkerke; T W Beck; A M Eisner; C A Heusch; J Kroseberg; W S Lockman; G Nesom; T Schalk; B A Schumm; A Seiden; P Spradlin; D C Williams; M G Wilson; J Albert; E Chen; G P Dubois-Felsmann; A Dvoretskii; D G Hitlin; I Narsky; T Piatenko; F C Porter; A Ryd; A Samuel; S Yang; S Jayatilleke; G Mancinelli; B T Meadows; M D Sokoloff; T Abe; F Blanc; P Bloom; S Chen; W T Ford; U Nauenberg; A Olivas; P Rankin; J G Smith; J Zhang; L Zhang; A Chen; J L Harton; A Soffer; W H Toki; R J Wilson; Q L Zeng; D Altenburg; T Brandt; J Brose; M Dickopp; E Feltresi; A Hauke; H M Lacker; R Müller-Pfefferkorn; R Nogowski; S Otto; A Petzold; J Schubert; K R Schubert; R Schwierz; B Spaan; J E Sundermann; D Bernard; G R Bonneaud; F Brochard; P Grenier; S Schrenk; Ch Thiebaux; G Vasileiadis; M Verderi; D J Bard; P J Clark; D Lavin; F Muheim; S Playfer; Y Xie; M Andreotti; V Azzolini; D Bettoni; C Bozzi; R Calabrese; G Cibinetto; E Luppi; M Negrini; L Piemontese; A Sarti; E Treadwell; F Anulli; R Baldini-Ferroli; A Calcaterra; R de Sangro; G Finocchiaro; P Patteri; I M Peruzzi; M Piccolo; A Zallo; A Buzzo; R Capra; R Contri; G Crosetti; M Lo Vetere; M Macri; M R Monge; S Passaggio; C Patrignani; E Robutti; A Santroni; S Tosi; S Bailey; G Brandenburg; K S Chaisanguanthum; M Morii; E Won; R S Dubitzky; U Langenegger; W Bhimji; D A Bowerman; P D Dauncey; U Egede; J R Gaillard; G W Morton; J A Nash; M B Nikolich; G P Taylor; M J Charles; G J Grenier; U Mallik; J Cochran; H B Crawley; J Lamsa; W T Meyer; S Prell; E I Rosenberg; A E Rubin; J Yi; M Biasini; R Covarelli; M Pioppi; M Davier; X Giroux; G Grosdidier; A Höcker; S Laplace; F Le Diberder; V Lepeltier; A M Lutz; T C Petersen; S Plaszczynski; M H Schune; L Tantot; G Wormser; C H Cheng; D J Lange; M C Simani; D M Wright; A J Bevan; C A Chavez; J P Coleman; I J Forster; J R Fry; E Gabathuler; R Gamet; D E Hutchcroft; R J Parry; D J Payne; R J Sloane; C Touramanis; J J Back; C M Cormack; P F Harrison; F Di Lodovico; G B Mohanty; C L Brown; G Cowan; R L Flack; H U Flaecher; M G Green; P S Jackson; T R McMahon; S Ricciardi; F Salvatore; M A Winter; D Brown; C L Davis; J Allison; N R Barlow; R J Barlow; P A Hart; M C Hodgkinson; G D Lafferty; A J Lyon; J C Williams; A Farbin; W D Hulsbergen; A Jawahery; D Kovalskyi; C K Lae; V Lillard; D A Roberts; G Blaylock; C Dallapiccola; K T Flood; S S Hertzbach; R Kofler; V B Koptchev; T B Moore; S Saremi; H Staengle; S Willocq; R Cowan; G Sciolla; S J Sekula; F Taylor; R K Yamamoto; D J J Mangeol; P M Patel; S H Robertson; A Lazzaro; V Lombardo; F Palombo; J M Bauer; L Cremaldi; V Eschenburg; R Godang; R Kroeger; J Reidy; D A Sanders; D J Summers; H W Zhao; S Brunet; D Côté; P Taras; H Nicholson; N Cavallo; F Fabozzi; C Gatto; L Lista; D Monorchio; P Paolucci; D Piccolo; C Sciacca; M Baak; H Bulten; G Raven; H L Snoek; L Wilden; C P Jessop; J M Losecco; T Allmendinger; K K Gan; K Honscheid; D Hufnagel; H Kagan; R Kass; T Pulliam; A M Rahimi; R Ter-Antonyan; Q K Wong; J Brau; R Frey; O Igonkina; C T Potter; N B Sinev; D Strom; E Torrence; F Colecchia; A Dorigo; F Galeazzi; M Margoni; M Morandin; M Posocco; M Rotondo; F Simonetto; R Stroili; G Tiozzo; C Voci; M Benayoun; H Briand; J Chauveau; P David; Ch de la Vaissière; L Del Buono; O Hamon; M J J John; Ph Leruste; J Malcles; J Ocariz; M Pivk; L Roos; S T'Jampens; G Therin; P F Manfredi; V Re; P K Behera; L Gladney; Q H Guo; J Panetta; C Angelini; G Batignani; S Bettarini; M Bondioli; F Bucci; G Calderini; M Carpinelli; F Forti; M A Giorgi; A Lusiani; G Marchiori; F Martinez-Vidal; M Morganti; N Neri; E Paoloni; M Rama; G Rizzo; F Sandrelli; J Walsh; M Haire; D Judd; K Paick; D E Wagoner; N Danielson; P Elmer; Y P Lau; C Lu; V Miftakov; J Olsen; A J S Smith; A V Telnov; F Bellini; G Cavoto; R Faccini; F Ferrarotto; F Ferroni; M Gaspero; L Li Gioi; M A Mazzoni; S Morganti; M Pierini; G Piredda; F Safai Tehrani; C Voena; S Christ; G Wagner; R Waldi; T Adye; N De Groot; B Franek; N I Geddes; G P Gopal; E O Olaiya; R Aleksan; S Emery; A Gaidot; S F Ganzhur; P-F Giraud; G Hamel de Monchenault; W Kozanecki; M Legendre; G W London; B Mayer; G Schott; G Vasseur; Ch Yèche; M Zito; M V Purohit; A W Weidemann; J R Wilson; F X Yumiceva; D Aston; R Bartoldus; N Berger; A M Boyarski; O L Buchmueller; R Claus; M R Convery; M Cristinziani; G De Nardo; D Dong; J Dorfan; D Dujmic; W Dunwoodie; E E Elsen; S Fan; R C Field; T Glanzman; S J Gowdy; T Hadig; V Halyo; C Hast; T Hryn'ova; W R Innes; M H Kelsey; P Kim; M L Kocian; D W G S Leith; J Libby; S Luitz; V Luth; H L Lynch; H Marsiske; R Messner; D R Muller; C P O'Grady; V E Ozcan; A Perazzo; M Perl; S Petrak; B N Ratcliff; A Roodman; A A Salnikov; R H Schindler; J Schwiening; G Simi; A Snyder; A Soha; J Stelzer; D Su; M K Sullivan; J Va'vra; S R Wagner; M Weaver; A J R Weinstein; W J Wisniewski; M Wittgen; D H Wright; A K Yarritu; C C Young; P R Burchat; A J Edwards; T I Meyer; B A Petersen; C Roat; S Ahmed; M S Alam; J A Ernst; M A Saeed; M Saleem; F R Wappler; W Bugg; M Krishnamurthy; S M Spanier; R Eckmann; H Kim; J L Ritchie; A Satpathy; R F Schwitters; J M Izen; I Kitayama; X C Lou; S Ye; F Bianchi; M Bona; F Gallo; D Gamba; L Bosisio; C Cartaro; F Cossutti; G Della Ricca; S Dittongo; S Grancagnolo; L Lanceri; P Poropat; L Vitale; G Vuagnin; R S Panvini; Sw Banerjee; C M Brown; D Fortin; P D Jackson; R Kowalewski; J M Roney; R J Sobie; H R Band; B Cheng; S Dasu; M Datta; A M Eichenbaum; M Graham; J J Hollar; J R Johnson; P E Kutter; H Li; R Liu; A Mihalyi; A K Mohapatra; Y Pan; R Prepost; P Tan; J H von Wimmersperg-Toeller; J Wu; S L Wu; Z Yu; M G Greene; H Neal; BaBar Collaboration

doi:10.1103/PhysRevLett.93.131801

Direct CP violating asymmetry in B0-->K+pi- decays

Phys Rev Lett. 2004 Sep 24;93(13):131801. doi: 10.1103/PhysRevLett.93.131801. Epub 2004 Sep 20.

Authors

B Aubert¹, R Barate, D Boutigny, F Couderc, J-M Gaillard, A Hicheur, Y Karyotakis, J P Lees, V Tisserand, A Zghiche, A Palano, A Pompili, J C Chen, N D Qi, G Rong, P Wang, Y S Zhu, G Eigen, I Ofte, B Stugu, G S Abrams, A W Borgland, A B Breon, D N Brown, J Button-Shafer, R N Cahn, E Charles, C T Day, M S Gill, A V Gritsan, Y Groysman, R G Jacobsen, R W Kadel, J Kadyk, L T Kerth, Yu G Kolomensky, G Kukartsev, G Lynch, L M Mir, P J Oddone, T J Orimoto, M Pripstein, N A Roe, M T Ronan, V G Shelkov, W A Wenzel, M Barrett, K E Ford, T J Harrison, A J Hart, C M Hawkes, S E Morgan, A T Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, M Steinke, J T Boyd, N Chevalier, W N Cottingham, M P Kelly, T E Latham, F F Wilson, T Cuhadar-Donszelmann, C Hearty, N S Knecht, T S Mattison, J A McKenna, D Thiessen, A Khan, P Kyberd, L Teodorescu, A E Blinov, V E Blinov, V P Druzhinin, V B Golubev, V N Ivanchenko, E A Kravchenko, A P Onuchin, S I Serednyakov, Yu I Skovpen, E P Solodov, A N Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, A J Lankford, M Mandelkern, R K Mommsen, W Roethel, D P Stoker, C Buchanan, B L Hartfiel, S D Foulkes, J W Gary, B C Shen, K Wang, D del Re, H K Hadavand, E J Hill, D B MacFarlane, H P Paar, Sh Rahatlou, V Sharma, J W Berryhill, C Campagnari, B Dahmes, O Long, A Lu, M A Mazur, J D Richman, W Verkerke, T W Beck, A M Eisner, C A Heusch, J Kroseberg, W S Lockman, G Nesom, T Schalk, B A Schumm, A Seiden, P Spradlin, D C Williams, M G Wilson, J Albert, E Chen, G P Dubois-Felsmann, A Dvoretskii, D G Hitlin, I Narsky, T Piatenko, F C Porter, A Ryd, A Samuel, S Yang, S Jayatilleke, G Mancinelli, B T Meadows, M D Sokoloff, T Abe, F Blanc, P Bloom, S Chen, W T Ford, U Nauenberg, A Olivas, P Rankin, J G Smith, J Zhang, L Zhang, A Chen, J L Harton, A Soffer, W H Toki, R J Wilson, Q L Zeng, D Altenburg, T Brandt, J Brose, M Dickopp, E Feltresi, A Hauke, H M Lacker, R Müller-Pfefferkorn, R Nogowski, S Otto, A Petzold, J Schubert, K R Schubert, R Schwierz, B Spaan, J E Sundermann, D Bernard, G R Bonneaud, F Brochard, P Grenier, S Schrenk, Ch Thiebaux, G Vasileiadis, M Verderi, D J Bard, P J Clark, D Lavin, F Muheim, S Playfer, Y Xie, M Andreotti, V Azzolini, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Luppi, M Negrini, L Piemontese, A Sarti, E Treadwell, F Anulli, R Baldini-Ferroli, A Calcaterra, R de Sangro, G Finocchiaro, P Patteri, I M Peruzzi, M Piccolo, A Zallo, A Buzzo, R Capra, R Contri, G Crosetti, M Lo Vetere, M Macri, M R Monge, S Passaggio, C Patrignani, E Robutti, A Santroni, S Tosi, S Bailey, G Brandenburg, K S Chaisanguanthum, M Morii, E Won, R S Dubitzky, U Langenegger, W Bhimji, D A Bowerman, P D Dauncey, U Egede, J R Gaillard, G W Morton, J A Nash, M B Nikolich, G P Taylor, M J Charles, G J Grenier, U Mallik, J Cochran, H B Crawley, J Lamsa, W T Meyer, S Prell, E I Rosenberg, A E Rubin, J Yi, M Biasini, R Covarelli, M Pioppi, M Davier, X Giroux, G Grosdidier, A Höcker, S Laplace, F Le Diberder, V Lepeltier, A M Lutz, T C Petersen, S Plaszczynski, M H Schune, L Tantot, G Wormser, C H Cheng, D J Lange, M C Simani, D M Wright, A J Bevan, C A Chavez, J P Coleman, I J Forster, J R Fry, E Gabathuler, R Gamet, D E Hutchcroft, R J Parry, D J Payne, R J Sloane, C Touramanis, J J Back, C M Cormack, P F Harrison, F Di Lodovico, G B Mohanty, C L Brown, G Cowan, R L Flack, H U Flaecher, M G Green, P S Jackson, T R McMahon, S Ricciardi, F Salvatore, M A Winter, D Brown, C L Davis, J Allison, N R Barlow, R J Barlow, P A Hart, M C Hodgkinson, G D Lafferty, A J Lyon, J C Williams, A Farbin, W D Hulsbergen, A Jawahery, D Kovalskyi, C K Lae, V Lillard, D A Roberts, G Blaylock, C Dallapiccola, K T Flood, S S Hertzbach, R Kofler, V B Koptchev, T B Moore, S Saremi, H Staengle, S Willocq, R Cowan, G Sciolla, S J Sekula, F Taylor, R K Yamamoto, D J J Mangeol, P M Patel, S H Robertson, A Lazzaro, V Lombardo, F Palombo, J M Bauer, L Cremaldi, V Eschenburg, R Godang, R Kroeger, J Reidy, D A Sanders, D J Summers, H W Zhao, S Brunet, D Côté, P Taras, H Nicholson, N Cavallo, F Fabozzi, C Gatto, L Lista, D Monorchio, P Paolucci, D Piccolo, C Sciacca, M Baak, H Bulten, G Raven, H L Snoek, L Wilden, C P Jessop, J M Losecco, T Allmendinger, K K Gan, K Honscheid, D Hufnagel, H Kagan, R Kass, T Pulliam, A M Rahimi, R Ter-Antonyan, Q K Wong, J Brau, R Frey, O Igonkina, C T Potter, N B Sinev, D Strom, E Torrence, F Colecchia, A Dorigo, F Galeazzi, M Margoni, M Morandin, M Posocco, M Rotondo, F Simonetto, R Stroili, G Tiozzo, C Voci, M Benayoun, H Briand, J Chauveau, P David, Ch de la Vaissière, L Del Buono, O Hamon, M J J John, Ph Leruste, J Malcles, J Ocariz, M Pivk, L Roos, S T'Jampens, G Therin, P F Manfredi, V Re, P K Behera, L Gladney, Q H Guo, J Panetta, C Angelini, G Batignani, S Bettarini, M Bondioli, F Bucci, G Calderini, M Carpinelli, F Forti, M A Giorgi, A Lusiani, G Marchiori, F Martinez-Vidal, M Morganti, N Neri, E Paoloni, M Rama, G Rizzo, F Sandrelli, J Walsh, M Haire, D Judd, K Paick, D E Wagoner, N Danielson, P Elmer, Y P Lau, C Lu, V Miftakov, J Olsen, A J S Smith, A V Telnov, F Bellini, G Cavoto, R Faccini, F Ferrarotto, F Ferroni, M Gaspero, L Li Gioi, M A Mazzoni, S Morganti, M Pierini, G Piredda, F Safai Tehrani, C Voena, S Christ, G Wagner, R Waldi, T Adye, N De Groot, B Franek, N I Geddes, G P Gopal, E O Olaiya, R Aleksan, S Emery, A Gaidot, S F Ganzhur, P-F Giraud, G Hamel de Monchenault, W Kozanecki, M Legendre, G W London, B Mayer, G Schott, G Vasseur, Ch Yèche, M Zito, M V Purohit, A W Weidemann, J R Wilson, F X Yumiceva, D Aston, R Bartoldus, N Berger, A M Boyarski, O L Buchmueller, R Claus, M R Convery, M Cristinziani, G De Nardo, D Dong, J Dorfan, D Dujmic, W Dunwoodie, E E Elsen, S Fan, R C Field, T Glanzman, S J Gowdy, T Hadig, V Halyo, C Hast, T Hryn'ova, W R Innes, M H Kelsey, P Kim, M L Kocian, D W G S Leith, J Libby, S Luitz, V Luth, H L Lynch, H Marsiske, R Messner, D R Muller, C P O'Grady, V E Ozcan, A Perazzo, M Perl, S Petrak, B N Ratcliff, A Roodman, A A Salnikov, R H Schindler, J Schwiening, G Simi, A Snyder, A Soha, J Stelzer, D Su, M K Sullivan, J Va'vra, S R Wagner, M Weaver, A J R Weinstein, W J Wisniewski, M Wittgen, D H Wright, A K Yarritu, C C Young, P R Burchat, A J Edwards, T I Meyer, B A Petersen, C Roat, S Ahmed, M S Alam, J A Ernst, M A Saeed, M Saleem, F R Wappler, W Bugg, M Krishnamurthy, S M Spanier, R Eckmann, H Kim, J L Ritchie, A Satpathy, R F Schwitters, J M Izen, I Kitayama, X C Lou, S Ye, F Bianchi, M Bona, F Gallo, D Gamba, L Bosisio, C Cartaro, F Cossutti, G Della Ricca, S Dittongo, S Grancagnolo, L Lanceri, P Poropat, L Vitale, G Vuagnin, R S Panvini, Sw Banerjee, C M Brown, D Fortin, P D Jackson, R Kowalewski, J M Roney, R J Sobie, H R Band, B Cheng, S Dasu, M Datta, A M Eichenbaum, M Graham, J J Hollar, J R Johnson, P E Kutter, H Li, R Liu, A Mihalyi, A K Mohapatra, Y Pan, R Prepost, P Tan, J H von Wimmersperg-Toeller, J Wu, S L Wu, Z Yu, M G Greene, H Neal; BaBar Collaboration

Affiliation

¹ Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France.

PMID: 15524703
DOI: 10.1103/PhysRevLett.93.131801

Abstract

We present a measurement of the direct CP violating asymmetry in the decay B0-->K+pi(-) using a data sample of 227x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We observe a total signal yield of nK-(pi(+))+nK+(pi(-))=1606+/-51 decays and measure the asymmetry (nK-(pi(+))-nK+(pi(-)))/(nK-(pi(+))+nK+(pi(-)))=-0.133+/-0.030(stat)+/-0.009(syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3x10(-5), corresponding to 4.2 standard deviations.