Measurement of CP violation observables and parameters for the decays B±→DK*±

被引：55

作者：

Aubert, B. ^{[1
]}

Karyotakis, Y. ^{[1
]}

Lees, J. P. ^{[1
]}

Poireau, V. ^{[1
]}

Prencipe, E. ^{[1
]}

Prudent, X. ^{[1
]}

Tisserand, V. ^{[1
]}

Garra Tico, J. ^{[2
]}

Grauges, E. ^{[2
]}

Martinelli, M. ^{[3
,4
]}

Palano, A. ^{[3
,4
]}

Pappagallo, M. ^{[3
,4
]}

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Sun, L. ^{[5
]}

Battaglia, M. ^{[76
]}

Brown, D. N. ^{[36
,76
]}

Kerth, L. T. ^{[76
]}

Kolomensky, Yu. G. ^{[76
]}

Lynch, G. ^{[76
]}

Osipenkov, I. L. ^{[76
]}

Tackmann, K. ^{[76
]}

Tanabe, T. ^{[76
]}

Hawkes, C. M. ^{[77
]}

Soni, N. ^{[77
]}

Watson, A. T. ^{[77
]}

Koch, H. ^{[6
]}

Schroeder, T. ^{[6
]}

Asgeirsson, D. J. ^{[7
]}

Fulsom, B. G. ^{[7
]}

Hearty, C. ^{[7
]}

Mattison, T. S. ^{[7
]}

McKenna, J. A. ^{[7
]}

Barrett, M. ^{[8
]}

Khan, A. ^{[8
]}

Randle-Conde, A. ^{[8
]}

Blinov, V. E. ^{[9
]}

Bukin, A. D. ^{[9
]}

Buzykaev, A. R. ^{[9
]}

Druzhinin, V. P. ^{[9
]}

Golubev, V. B. ^{[9
]}

Onuchin, A. P. ^{[9
]}

Serednyakov, S. I. ^{[9
]}

Skovpen, Yu. I. ^{[9
]}

Solodov, E. P. ^{[9
]}

Todyshev, K. Yu. ^{[9
]}

Bondioli, M. ^{[10
]}

Curry, S. ^{[10
]}

Eschrich, I. ^{[10
]}

Kirkby, D. ^{[10
]}

机构：

[1] Univ Savoie, CNRS, LAPP, IN2P3, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[3] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[4] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy

[5] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[6] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[7] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[8] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[9] Budker Institute of Nuclear Phys, Novosibirsk 630090, Russia

[10] Univ Calif Irvine, Irvine, CA 92697 USA

[11] Univ Calif Riverside, Riverside, CA 92521 USA

[12] Univ Calif San Diego, La Jolla, CA 92093 USA

[13] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[14] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[15] CALTECH, Pasadena, CA 91125 USA

[16] Univ Cincinnati, Cincinnati, OH 45221 USA

[17] Univ Colorado, Boulder, CO 80309 USA

[18] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[19] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[20] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[21] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[22] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[23] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[24] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[25] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[26] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[27] Harvard Univ, Cambridge, MA 02138 USA

[28] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[29] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[30] Univ Iowa, Iowa City, IA 52242 USA

[31] Iowa State Univ, Ames, IA 50011 USA

[32] Johns Hopkins Univ, Baltimore, MD 21218 USA

[33] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[34] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[35] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[36] Univ Louisville, Louisville, KY 40292 USA

[37] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[38] Univ Massachusetts, Amherst, MA 01003 USA

[39] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[40] McGill Univ, Montreal, PQ H3A 2T8, Canada

[41] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[42] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[43] Univ Montreal, Montreal, PQ H3C 3J7, Canada

[44] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

[45] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

[46] Univ Notre Dame, Notre Dame, IN 46556 USA

[47] Ohio State Univ, Columbus, OH 43210 USA

[48] Univ Oregon, Eugene, OR 97403 USA

[49] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[50] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 09期

基金：

英国科学技术设施理事会; 加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

WEAK PHASE;

D O I：

10.1103/PhysRevD.80.092001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the decay B--> DK*- using a sample of 379x10(6) Upsilon(4S)-> BB events collected with the BABAR detector at the PEP-II B factory. We perform a Gronau-London-Wyler analysis where the D meson decays into either a CP-even (CP+) eigenstate (K+K-, pi(+)pi(-)), CP-odd (CP-) eigenstate (K-S(0)pi(0), K-S(0)phi, K-S(0)omega) or a non-CP state (K-pi(+)). We also analyze D meson decays into K+pi(-) from a Cabibbo-favored D-0 decay or doubly suppressed D-0 decay [Atwood-Dunietz-Soni (ADS) analysis]. We measure observables that are sensitive to the Cabibbo-Kobayashi-Maskawa angle gamma: the partial-rate charge asymmetries A(CP +/-), the ratios R-CP +/- of the B-decay branching fractions in CP +/- and non-CP decay, the ratio R-ADS of the charge-averaged branching fractions, and the charge asymmetry A(ADS) of the ADS decays: A(CP+)=0.09 +/- 0.13 +/- 0.06, A(CP-)=-0.23 +/- 0.21 +/- 0.07, RCP+=2.17 +/- 0.35 +/- 0.09, RCP-=1.03 +/- 0.27 +/- 0.13, R-ADS=0.066 +/- 0.031 +/- 0.010, and A(ADS)=-0.34 +/- 0.43 +/- 0.16, where the first uncertainty is statistical and the second is systematic. Combining all the measurements and using a frequentist approach yields the magnitude of the ratio between the Cabibbo-suppressed and favored amplitudes, r(B)=0.31 with a one (two) sigma confidence level interval of [0.24, 0.38] ([0.17, 0.43]). The value r(B)=0 is excluded at the 3.3 sigma level. A similar analysis excludes values of gamma in the intervals [0, 7]degrees, [55, 111]degrees, and [175, 180]degrees ([85, 99]degrees) at the one (two) sigma confidence level.

引用

页数：14

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