Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K0 -: art. no. 201802

被引：11

作者：

Aubert, B ^{[1
]}

Barate, R

Boutigny, D

Couderc, F

Gaillard, JM

Hicheur, A

Karyotakis, Y

Lees, JP

Robbe, P

Tisserand, V

Zghiche, A

Palano, A

Pompili, A

Chen, JC

Qi, ND

Rong, G

Wang, P

Zhu, YS

Eigen, G

Ofte, I

Stugu, B

Abrams, GS

Borgland, AW

Breon, AB

Brown, DN

Button-Shafer, J

Cahn, RN

Charles, E

Day, CT

Gill, MS

Gritsan, AV

Groysman, Y

Jacobsen, RG

Kadel, RW

Kadyk, J

Kerth, LT

Kolomensky, YG

Kukartsev, G

LeClerc, C

Levi, ME

Lynch, G

Mir, LM

Oddone, PJ

Orimoto, TJ

Pripstein, M

Roe, NA

Romosan, A

Ronan, MT

Shelkov, VG

Telnov, AV

机构：

[1] Phys Particules Lab, F-74941 Annecy Le Vieux, France

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

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

[4] Inst High Energy Phys, Beijing 100039, Peoples R China

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

[6] Univ Calif Berkeley, Berkeley, CA 94720 USA

[7] Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[8] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

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

[10] Univ Bristol, Bristol BS8 1TL, Avon, England

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

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

[13] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

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

[15] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

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

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

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

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

[20] CALTECH, Pasadena, CA 91125 USA

[21] Univ Cincinnati, Cincinnati, OH 45221 USA

[22] Univ Colorado, Boulder, CO 80309 USA

[23] Colorado State Univ, Ft Collins, CO 80523 USA

[24] CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France

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

[26] Ecole Polytech, LLR, F-91128 Palaiseau, France

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

[28] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

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

[30] Florida A&M Univ, Tallahassee, FL 32307 USA

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

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

[33] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[34] Harvard Univ, Cambridge, MA 02138 USA

[35] Heidelberg Univ, D-69120 Heidelberg, Germany

[36] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

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

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

[39] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

[40] Lab Accelerateur Lineaire, F-91898 Orsay, France

[41] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[42] Univ Liverpool, Liverpool L69 3BX, Merseyside, England

[43] Univ London, Queen Mary, London E1 4NS, England

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

[45] Univ Louisville, Louisville, KY 40292 USA

[46] Univ Manchester, Manchester M13 9PL, Lancs, England

[47] Univ Maryland, College Pk, MD 20742 USA

[48] Univ Massachusetts, Amherst, MA 01003 USA

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

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

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 20期

基金：

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：

D O I：

10.1103/PhysRevLett.92.201802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K-0. The results are based on a data sample of approximately 88x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+-->K(0)pi(+))=(22.3+/-1.7+/-1.1)x10(-6), B(B-0-->K(0)pi(0))=(11.4+/-1.7+/-0.8)x10(-6), B(B+-->(K) over bar K-0(+))<2.5x10(-6), and B(B-0-->K-0(K) over bar (0))<1.8x10(-6), where the first uncertainty is statistical and the second is systematic, and the upper limits are at the 90% confidence level. In addition, the following CP-violating asymmetries have been measured: A(CP)(B+-->K(0)pi(+))=-0.05+/-0.08+/-0.01 and A(CP)(B-0-->K(0)pi(0))=0.03+/-0.36+/-0.11.

引用

页码：201802 / 1

页数：7

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