Observation of CP violation in the B0 meson system

B. Aubert; D. Boutigny; J. M. Gaillard; A. Hicheur; Y. Karyotakis; J. P. Lees; P. Robbe; V. Tisserand; A. Palano; G. P. Chen; J. C. Chen; N. D. Qi; G. Rong; P. Wang; Y. S. Zhu; G. Eigen; P. L. Reinertsen; B. Stugu; B. Abbott; G. S. Abrams; A. W. Borgland; A. B. Breon; D. N. Brown; J. Button-Shafer; R. N. Cahn; A. R. Clark; M. S. Gill; A. V. Gritsan; Y. Groysman; R. G. Jacobsen; R. W. Kadel; J. Kadyk; L. T. Kerth; S. Kluth; Yu G. Kolomensky; J. F. Kral; C. LeClerc; M. E. Levi; T. Liu; G. Lynch; A. B. Meyer; M. Momayezi; P. J. Oddone; A. Perazzo; M. Pripstein; N. A. Roe; A. Romosan; M. T. Ronan; V. G. Shelkov; A. V. Telnov; W. A. Wenzel; M. S. Zisman; P. G. Bright-Thomas; T. J. Harrison; C. M. Hawkes; D. J. Knowles; S. W. O'Neale; R. C. Penny; A. T. Watson; N. K. Watson; T. Deppermann; K. Goetzen; H. Koch; J. Krug; M. Kunze; B. Lewandowski; K. Peters; H. Schmuecker; M. Steinke; J. C. Andress; N. R. Barlow; W. Bhimji; N. Chevalier; P. J. Clark; W. N. Cottingham; N. De Groot; N. Dyce; B. Foster; J. D. McFall; D. Wallom; F. F. Wilson; K. Abe; C. Hearty; T. S. Mattison; J. A. McKenna; D. Thiessen; S. Jolly; A. K. McKemey; J. Tinslay; V. E. Blinov; A. D. Bukin; D. A. Bukin; A. R. Buzykaev; V. B. Golubev; V. N. Ivanchenko; A. A. Korol; E. A. Kravchenko; A. P. Onuchin; A. A. Salnikov; S. I. Serednyakov; Yu I. Skovpen; V. I. Telnov; A. N. Yushkov; D. Best; A. J. Lankford; M. Mandelkern; S. McMahon; D. P. Stoker; A. Ahsan; K. Arisaka; C. Buchanan; S. Chun; J. G. Branson; D. B. MacFarlane; S. Prell; Sh Rahatlou; G. Raven; V. Sharma; C. Campagnari; B. Dahmes; P. A. Hart; N. Kuznetsova; S. L. Levy; O. Long; A. Lu; J. D. Richman; W. Verkerke; M. Witherell; S. Yellin; J. Beringer; D. E. Dorfan; A. M. Eisner; A. Frey; A. A. Grillo; M. Grothe; C. A. Heusch; R. P. Johnson; W. Kroeger; W. S. Lockman; T. Pulliam; H. Sadrozinski; T. Schalk; R. E. Schmitz; B. A. Schumm; A. Seiden; M. Turri; W. Walkowiak; D. C. Williams; M. G. Wilson; E. Chen; G. P. Dubois-Felsmann; A. Dvoretskii; D. G. Hitlin; S. Metzler; J. Oyang; F. C. Porter; A. Ryd; A. Samuel; M. Weaver; S. Yang; R. Y. Zhu; S. Devmal; T. L. Geld; S. Jayatilleke; G. Mancinelli; B. T. Meadows; M. D. Sokoloff; T. Barillari; P. Bloom; M. O. Dima; S. Fahey; W. T. Ford; D. R. Johnson; U. Nauenberg; A. Olivas; H. Park; P. Rankin; J. Roy; S. Sen; J. G. Smith; W. C. van Hoek; D. L. Wagner; J. Blouw; J. L. Harton; M. Krishnamurthy; A. Soffer; W. H. Toki; R. J. Wilson; J. Zhang; T. Brandt; J. Brose; T. Colberg; G. Dahlinger; M. Dickopp; R. S. Dubitzky; A. Hauke; E. Maly; R. Müller-Pfefferkorn; S. Otto; K. R. Schubert; R. Schwierz; B. Spaan; L. Wilden; L. Behr; D. Bernard; G. R. Bonneaud; F. Brochard; J. Cohen-Tanugi; S. Ferrag; E. Roussot; S. T'Jampens; Ch Thiebaux; G. Vasileiadis; M. Verderi; A. Anjomshoaa; R. Bernet; A. Khan; D. Lavin; F. Muheim; S. Playfer; J. E. Swain; M. Falbo; C. Borean; C. Bozzi; S. Dittongo; M. Folegani; L. Piemontese; E. Treadwell; F. Anulli; R. Baldini-Ferroli; A. Calcaterra; R. de Sangro; D. Falciai; G. Finocchiaro; P. Patteri; I. M. Peruzzi; M. Piccolo; Y. Xie; A. Zallo; S. Bagnasco; A. Buzzo; R. Contri; G. Crosetti; P. Fabbricatore; S. Farinon; M. Lo Vetere; M. Macri; M. R. Monge; U. Egede; J. A. Nash

doi:10.1103/PhysRevLett.87.091801

Observation of CP violation in the B⁰ meson system

B. Aubert, D. Boutigny, J. M. Gaillard, A. Hicheur, Y. Karyotakis, J. P. Lees, P. Robbe, V. Tisserand, A. Palano, G. P. Chen, J. C. Chen, N. D. Qi, G. Rong, P. Wang, Y. S. Zhu, G. Eigen, P. L. Reinertsen, B. Stugu, B. Abbott, G. S. AbramsA. W. Borgland, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, A. R. Clark, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kerth, S. Kluth, Yu G. Kolomensky, J. F. Kral, C. LeClerc, M. E. Levi, T. Liu, G. Lynch, A. B. Meyer, M. Momayezi, P. J. Oddone, A. Perazzo, M. Pripstein, N. A. Roe, A. Romosan, M. T. Ronan, V. G. Shelkov, A. V. Telnov, W. A. Wenzel, M. S. Zisman, P. G. Bright-Thomas, T. J. Harrison, C. M. Hawkes, D. J. Knowles, S. W. O'Neale, R. C. Penny, A. T. Watson, N. K. Watson, T. Deppermann, K. Goetzen, H. Koch, J. Krug, M. Kunze, B. Lewandowski, K. Peters, H. Schmuecker, M. Steinke, J. C. Andress, N. R. Barlow, W. Bhimji, N. Chevalier, P. J. Clark, W. N. Cottingham, N. De Groot, N. Dyce, B. Foster, J. D. McFall, D. Wallom, F. F. Wilson, K. Abe, C. Hearty, T. S. Mattison, J. A. McKenna, D. Thiessen, S. Jolly, A. K. McKemey, J. Tinslay, V. E. Blinov, A. D. Bukin, D. A. Bukin, A. R. Buzykaev, V. B. Golubev, V. N. Ivanchenko, A. A. Korol, E. A. Kravchenko, A. P. Onuchin, A. A. Salnikov, S. I. Serednyakov, Yu I. Skovpen, V. I. Telnov, A. N. Yushkov, D. Best, A. J. Lankford, M. Mandelkern, S. McMahon, D. P. Stoker, A. Ahsan, K. Arisaka, C. Buchanan, S. Chun, J. G. Branson, D. B. MacFarlane, S. Prell, Sh Rahatlou, G. Raven, V. Sharma, C. Campagnari, B. Dahmes, P. A. Hart, N. Kuznetsova, S. L. Levy, O. Long, A. Lu, J. D. Richman, W. Verkerke, M. Witherell, S. Yellin, J. Beringer, D. E. Dorfan, A. M. Eisner, A. Frey, A. A. Grillo, M. Grothe, C. A. Heusch, R. P. Johnson, W. Kroeger, W. S. Lockman, T. Pulliam, H. Sadrozinski, T. Schalk, R. E. Schmitz, B. A. Schumm, A. Seiden, M. Turri, W. Walkowiak, D. C. Williams, M. G. Wilson, E. Chen, G. P. Dubois-Felsmann, A. Dvoretskii, D. G. Hitlin, S. Metzler, J. Oyang, F. C. Porter, A. Ryd, A. Samuel, M. Weaver, S. Yang, R. Y. Zhu, S. Devmal, T. L. Geld, S. Jayatilleke, G. Mancinelli, B. T. Meadows, M. D. Sokoloff, T. Barillari, P. Bloom, M. O. Dima, S. Fahey, W. T. Ford, D. R. Johnson, U. Nauenberg, A. Olivas, H. Park, P. Rankin, J. Roy, S. Sen, J. G. Smith, W. C. van Hoek, D. L. Wagner, J. Blouw, J. L. Harton, M. Krishnamurthy, A. Soffer, W. H. Toki, R. J. Wilson, J. Zhang, T. Brandt, J. Brose, T. Colberg, G. Dahlinger, M. Dickopp, R. S. Dubitzky, A. Hauke, E. Maly, R. Müller-Pfefferkorn, S. Otto, K. R. Schubert, R. Schwierz, B. Spaan, L. Wilden, L. Behr, D. Bernard, G. R. Bonneaud, F. Brochard, J. Cohen-Tanugi, S. Ferrag, E. Roussot, S. T'Jampens, Ch Thiebaux, G. Vasileiadis, M. Verderi, A. Anjomshoaa, R. Bernet, A. Khan, D. Lavin, F. Muheim, S. Playfer, J. E. Swain, M. Falbo, C. Borean, C. Bozzi, S. Dittongo, M. Folegani, L. Piemontese, E. Treadwell, F. Anulli, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, D. Falciai, G. Finocchiaro, P. Patteri, I. M. Peruzzi, M. Piccolo, Y. Xie, A. Zallo, S. Bagnasco, A. Buzzo, R. Contri, G. Crosetti, P. Fabbricatore, S. Farinon, M. Lo Vetere, M. Macri, M. R. Monge, U. Egede, J. A. Nash

Research output: Contribution to journal › Article › Research › peer-review

539 Citations (Scopus)

Abstract

We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of γ(4S)decays collected in 2001, bringing the data available to 32 ×10⁶ BB^¯ We select events in which one neutral B meson is fully reconstructed in a final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2β, is derived from the decay time distributions in such events. The result sin2β=0.59 ± 0.14(stat)±0.05(syst) establishes CP violation in the B⁰ meson system. We also determine |λ|= 0.93±0.09(stat)±0.03(syst), consistent with no direct CP violation.

Original language	English
Journal	Physical Review Letters
Volume	87
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.87.091801
Publication status	Published - 14 Aug 2001
Externally published	Yes

Access to Document

10.1103/PhysRevLett.87.091801

Cite this

Aubert, B., Boutigny, D., Gaillard, J. M., Hicheur, A., Karyotakis, Y., Lees, J. P., Robbe, P., Tisserand, V., Palano, A., Chen, G. P., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Reinertsen, P. L., Stugu, B., Abbott, B., ... Nash, J. A. (2001). Observation of CP violation in the B⁰ meson system. Physical Review Letters, 87(9). https://doi.org/10.1103/PhysRevLett.87.091801

@article{b5ba003f91124261a2b0a94a332d562b,

title = "Observation of CP violation in the B0 meson system",

abstract = "We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of γ(4S)decays collected in 2001, bringing the data available to 32 ×106 BB¯ We select events in which one neutral B meson is fully reconstructed in a final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2β, is derived from the decay time distributions in such events. The result sin2β=0.59 ± 0.14(stat)±0.05(syst) establishes CP violation in the B0 meson system. We also determine |λ|= 0.93±0.09(stat)±0.03(syst), consistent with no direct CP violation.",

author = "B. Aubert and D. Boutigny and Gaillard, {J. M.} and A. Hicheur and Y. Karyotakis and Lees, {J. P.} and P. Robbe and V. Tisserand and A. Palano and Chen, {G. P.} and Chen, {J. C.} and Qi, {N. D.} and G. Rong and P. Wang and Zhu, {Y. S.} and G. Eigen and Reinertsen, {P. L.} and B. Stugu and B. Abbott and Abrams, {G. S.} and Borgland, {A. W.} and Breon, {A. B.} and Brown, {D. N.} and J. Button-Shafer and Cahn, {R. N.} and Clark, {A. R.} and Gill, {M. S.} and Gritsan, {A. V.} and Y. Groysman and Jacobsen, {R. G.} and Kadel, {R. W.} and J. Kadyk and Kerth, {L. T.} and S. Kluth and Kolomensky, {Yu G.} and Kral, {J. F.} and C. LeClerc and Levi, {M. E.} and T. Liu and G. Lynch and Meyer, {A. B.} and M. Momayezi and Oddone, {P. J.} and A. Perazzo and M. Pripstein and Roe, {N. A.} and A. Romosan and Ronan, {M. T.} and Shelkov, {V. G.} and Telnov, {A. V.} and Wenzel, {W. A.} and Zisman, {M. S.} and Bright-Thomas, {P. G.} and Harrison, {T. J.} and Hawkes, {C. M.} and Knowles, {D. J.} and O'Neale, {S. W.} and Penny, {R. C.} and Watson, {A. T.} and Watson, {N. K.} and T. Deppermann and K. Goetzen and H. Koch and J. Krug and M. Kunze and B. Lewandowski and K. Peters and H. Schmuecker and M. Steinke and Andress, {J. C.} and Barlow, {N. R.} and W. Bhimji and N. Chevalier and Clark, {P. J.} and Cottingham, {W. N.} and {De Groot}, N. and N. Dyce and B. Foster and McFall, {J. D.} and D. Wallom and Wilson, {F. F.} and K. Abe and C. Hearty and Mattison, {T. S.} and McKenna, {J. A.} and D. Thiessen and S. Jolly and McKemey, {A. K.} and J. Tinslay and Blinov, {V. E.} and Bukin, {A. D.} and Bukin, {D. A.} and Buzykaev, {A. R.} and Golubev, {V. B.} and Ivanchenko, {V. N.} and Korol, {A. A.} and Kravchenko, {E. A.} and Onuchin, {A. P.} and Salnikov, {A. A.} and Serednyakov, {S. I.} and Skovpen, {Yu I.} and Telnov, {V. I.} and Yushkov, {A. N.} and D. Best and Lankford, {A. J.} and M. Mandelkern and S. McMahon and Stoker, {D. P.} and A. Ahsan and K. Arisaka and C. Buchanan and S. Chun and Branson, {J. G.} and MacFarlane, {D. B.} and S. Prell and Sh Rahatlou and G. Raven and V. Sharma and C. Campagnari and B. Dahmes and Hart, {P. A.} and N. Kuznetsova and Levy, {S. L.} and O. Long and A. Lu and Richman, {J. D.} and W. Verkerke and M. Witherell and S. Yellin and J. Beringer and Dorfan, {D. E.} and Eisner, {A. M.} and A. Frey and Grillo, {A. A.} and M. Grothe and Heusch, {C. A.} and Johnson, {R. P.} and W. Kroeger and Lockman, {W. S.} and T. Pulliam and H. Sadrozinski and T. Schalk and Schmitz, {R. E.} and Schumm, {B. A.} and A. Seiden and M. Turri and W. Walkowiak and Williams, {D. C.} and Wilson, {M. G.} and E. Chen and Dubois-Felsmann, {G. P.} and A. Dvoretskii and Hitlin, {D. G.} and S. Metzler and J. Oyang and Porter, {F. C.} and A. Ryd and A. Samuel and M. Weaver and S. Yang and Zhu, {R. Y.} and S. Devmal and Geld, {T. L.} and S. Jayatilleke and G. Mancinelli and Meadows, {B. T.} and Sokoloff, {M. D.} and T. Barillari and P. Bloom and Dima, {M. O.} and S. Fahey and Ford, {W. T.} and Johnson, {D. R.} and U. Nauenberg and A. Olivas and H. Park and P. Rankin and J. Roy and S. Sen and Smith, {J. G.} and {van Hoek}, {W. C.} and Wagner, {D. L.} and J. Blouw and Harton, {J. L.} and M. Krishnamurthy and A. Soffer and Toki, {W. H.} and Wilson, {R. J.} and J. Zhang and T. Brandt and J. Brose and T. Colberg and G. Dahlinger and M. Dickopp and Dubitzky, {R. S.} and A. Hauke and E. Maly and R. M{\"u}ller-Pfefferkorn and S. Otto and Schubert, {K. R.} and R. Schwierz and B. Spaan and L. Wilden and L. Behr and D. Bernard and Bonneaud, {G. R.} and F. Brochard and J. Cohen-Tanugi and S. Ferrag and E. Roussot and S. T'Jampens and Ch Thiebaux and G. Vasileiadis and M. Verderi and A. Anjomshoaa and R. Bernet and A. Khan and D. Lavin and F. Muheim and S. Playfer and Swain, {J. E.} and M. Falbo and C. Borean and C. Bozzi and S. Dittongo and M. Folegani and L. Piemontese and E. Treadwell and F. Anulli and R. Baldini-Ferroli and A. Calcaterra and {de Sangro}, R. and D. Falciai and G. Finocchiaro and P. Patteri and Peruzzi, {I. M.} and M. Piccolo and Y. Xie and A. Zallo and S. Bagnasco and A. Buzzo and R. Contri and G. Crosetti and P. Fabbricatore and S. Farinon and {Lo Vetere}, M. and M. Macri and Monge, {M. R.} and U. Egede and Nash, {J. A.}",

year = "2001",

month = aug,

day = "14",

doi = "10.1103/PhysRevLett.87.091801",

language = "English",

volume = "87",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

Aubert, B, Boutigny, D, Gaillard, JM, Hicheur, A, Karyotakis, Y, Lees, JP, Robbe, P, Tisserand, V, Palano, A, Chen, GP, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Reinertsen, PL, Stugu, B, Abbott, B, Abrams, GS, Borgland, AW, Breon, AB, Brown, DN, Button-Shafer, J, Cahn, RN, Clark, AR, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadel, RW, Kadyk, J, Kerth, LT, Kluth, S, Kolomensky, YG, Kral, JF, LeClerc, C, Levi, ME, Liu, T, Lynch, G, Meyer, AB, Momayezi, M, Oddone, PJ, Perazzo, A, Pripstein, M, Roe, NA, Romosan, A, Ronan, MT, Shelkov, VG, Telnov, AV, Wenzel, WA, Zisman, MS, Bright-Thomas, PG, Harrison, TJ, Hawkes, CM, Knowles, DJ, O'Neale, SW, Penny, RC, Watson, AT, Watson, NK, Deppermann, T, Goetzen, K, Koch, H, Krug, J, Kunze, M, Lewandowski, B, Peters, K, Schmuecker, H, Steinke, M, Andress, JC, Barlow, NR, Bhimji, W, Chevalier, N, Clark, PJ, Cottingham, WN, De Groot, N, Dyce, N, Foster, B, McFall, JD, Wallom, D, Wilson, FF, Abe, K, Hearty, C, Mattison, TS, McKenna, JA, Thiessen, D, Jolly, S, McKemey, AK, Tinslay, J, Blinov, VE, Bukin, AD, Bukin, DA, Buzykaev, AR, Golubev, VB, Ivanchenko, VN, Korol, AA, Kravchenko, EA, Onuchin, AP, Salnikov, AA, Serednyakov, SI, Skovpen, YI, Telnov, VI, Yushkov, AN, Best, D, Lankford, AJ, Mandelkern, M, McMahon, S, Stoker, DP, Ahsan, A, Arisaka, K, Buchanan, C, Chun, S, Branson, JG, MacFarlane, DB, Prell, S, Rahatlou, S, Raven, G, Sharma, V, Campagnari, C, Dahmes, B, Hart, PA, Kuznetsova, N, Levy, SL, Long, O, Lu, A, Richman, JD, Verkerke, W, Witherell, M, Yellin, S, Beringer, J, Dorfan, DE, Eisner, AM, Frey, A, Grillo, AA, Grothe, M, Heusch, CA, Johnson, RP, Kroeger, W, Lockman, WS, Pulliam, T, Sadrozinski, H, Schalk, T, Schmitz, RE, Schumm, BA, Seiden, A, Turri, M, Walkowiak, W, Williams, DC, Wilson, MG, Chen, E, Dubois-Felsmann, GP, Dvoretskii, A, Hitlin, DG, Metzler, S, Oyang, J, Porter, FC, Ryd, A, Samuel, A, Weaver, M, Yang, S, Zhu, RY, Devmal, S, Geld, TL, Jayatilleke, S, Mancinelli, G, Meadows, BT, Sokoloff, MD, Barillari, T, Bloom, P, Dima, MO, Fahey, S, Ford, WT, Johnson, DR, Nauenberg, U, Olivas, A, Park, H, Rankin, P, Roy, J, Sen, S, Smith, JG, van Hoek, WC, Wagner, DL, Blouw, J, Harton, JL, Krishnamurthy, M, Soffer, A, Toki, WH, Wilson, RJ, Zhang, J, Brandt, T, Brose, J, Colberg, T, Dahlinger, G, Dickopp, M, Dubitzky, RS, Hauke, A, Maly, E, Müller-Pfefferkorn, R, Otto, S, Schubert, KR, Schwierz, R, Spaan, B, Wilden, L, Behr, L, Bernard, D, Bonneaud, GR, Brochard, F, Cohen-Tanugi, J, Ferrag, S, Roussot, E, T'Jampens, S, Thiebaux, C, Vasileiadis, G, Verderi, M, Anjomshoaa, A, Bernet, R, Khan, A, Lavin, D, Muheim, F, Playfer, S, Swain, JE, Falbo, M, Borean, C, Bozzi, C, Dittongo, S, Folegani, M, Piemontese, L, Treadwell, E, Anulli, F, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Falciai, D, Finocchiaro, G, Patteri, P, Peruzzi, IM, Piccolo, M, Xie, Y, Zallo, A, Bagnasco, S, Buzzo, A, Contri, R, Crosetti, G, Fabbricatore, P, Farinon, S, Lo Vetere, M, Macri, M, Monge, MR, Egede, U & Nash, JA 2001, 'Observation of CP violation in the B⁰ meson system', Physical Review Letters, vol. 87, no. 9. https://doi.org/10.1103/PhysRevLett.87.091801

TY - JOUR

T1 - Observation of CP violation in the B0 meson system

AU - Aubert, B.

AU - Boutigny, D.

AU - Gaillard, J. M.

AU - Hicheur, A.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Robbe, P.

AU - Tisserand, V.

AU - Palano, A.

AU - Chen, G. P.

AU - Chen, J. C.

AU - Qi, N. D.

AU - Rong, G.

AU - Wang, P.

AU - Zhu, Y. S.

AU - Eigen, G.

AU - Reinertsen, P. L.

AU - Stugu, B.

AU - Abbott, B.

AU - Abrams, G. S.

AU - Borgland, A. W.

AU - Breon, A. B.

AU - Brown, D. N.

AU - Button-Shafer, J.

AU - Cahn, R. N.

AU - Clark, A. R.

AU - Gill, M. S.

AU - Gritsan, A. V.

AU - Groysman, Y.

AU - Jacobsen, R. G.

AU - Kadel, R. W.

AU - Kadyk, J.

AU - Kerth, L. T.

AU - Kluth, S.

AU - Kolomensky, Yu G.

AU - Kral, J. F.

AU - LeClerc, C.

AU - Levi, M. E.

AU - Liu, T.

AU - Lynch, G.

AU - Meyer, A. B.

AU - Momayezi, M.

AU - Oddone, P. J.

AU - Perazzo, A.

AU - Pripstein, M.

AU - Roe, N. A.

AU - Romosan, A.

AU - Ronan, M. T.

AU - Shelkov, V. G.

AU - Telnov, A. V.

AU - Wenzel, W. A.

AU - Zisman, M. S.

AU - Bright-Thomas, P. G.

AU - Harrison, T. J.

AU - Hawkes, C. M.

AU - Knowles, D. J.

AU - O'Neale, S. W.

AU - Penny, R. C.

AU - Watson, A. T.

AU - Watson, N. K.

AU - Deppermann, T.

AU - Goetzen, K.

AU - Koch, H.

AU - Krug, J.

AU - Kunze, M.

AU - Lewandowski, B.

AU - Peters, K.

AU - Schmuecker, H.

AU - Steinke, M.

AU - Andress, J. C.

AU - Barlow, N. R.

AU - Bhimji, W.

AU - Chevalier, N.

AU - Clark, P. J.

AU - Cottingham, W. N.

AU - De Groot, N.

AU - Dyce, N.

AU - Foster, B.

AU - McFall, J. D.

AU - Wallom, D.

AU - Wilson, F. F.

AU - Abe, K.

AU - Hearty, C.

AU - Mattison, T. S.

AU - McKenna, J. A.

AU - Thiessen, D.

AU - Jolly, S.

AU - McKemey, A. K.

AU - Tinslay, J.

AU - Blinov, V. E.

AU - Bukin, A. D.

AU - Bukin, D. A.

AU - Buzykaev, A. R.

AU - Golubev, V. B.

AU - Ivanchenko, V. N.

AU - Korol, A. A.

AU - Kravchenko, E. A.

AU - Onuchin, A. P.

AU - Salnikov, A. A.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

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PY - 2001/8/14

Y1 - 2001/8/14

N2 - We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of γ(4S)decays collected in 2001, bringing the data available to 32 ×106 BB¯ We select events in which one neutral B meson is fully reconstructed in a final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2β, is derived from the decay time distributions in such events. The result sin2β=0.59 ± 0.14(stat)±0.05(syst) establishes CP violation in the B0 meson system. We also determine |λ|= 0.93±0.09(stat)±0.03(syst), consistent with no direct CP violation.

AB - We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of γ(4S)decays collected in 2001, bringing the data available to 32 ×106 BB¯ We select events in which one neutral B meson is fully reconstructed in a final state containing charmonium and the flavor of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmetry, which in the standard model is proportional to sin2β, is derived from the decay time distributions in such events. The result sin2β=0.59 ± 0.14(stat)±0.05(syst) establishes CP violation in the B0 meson system. We also determine |λ|= 0.93±0.09(stat)±0.03(syst), consistent with no direct CP violation.

UR - http://www.scopus.com/inward/record.url?scp=0035959125&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.87.091801

DO - 10.1103/PhysRevLett.87.091801

M3 - Article

AN - SCOPUS:0035959125

VL - 87

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

ER -

Observation of CP violation in the B0 meson system

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Observation of CP violation in the B⁰ meson system