Measurements of CP-violating asymmetries and branching fractions in B meson decays to η′K -: art. no. 161801

被引:47
作者
Aubert, B [1 ]
Barate, R
Boutigny, D
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
Kral, JF
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 Phys Expt, 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 San Diego, La Jolla, CA 92093 USA
[17] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[18] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA
[19] CALTECH, Pasadena, CA 91125 USA
[20] Univ Cincinnati, Cincinnati, OH 45221 USA
[21] Univ Colorado, Boulder, CO 80309 USA
[22] Colorado State Univ, Ft Collins, CO 80523 USA
[23] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany
[24] Ecole Polytech, LLR, F-91128 Palaiseau, France
[25] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland
[26] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy
[27] Univ Ferrara, Ist Nazl Fis Nucl, I-44100 Ferrara, Italy
[28] Florida A&M Univ, Tallahassee, FL 32307 USA
[29] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[30] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[31] Univ Genoa, Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[32] Harvard Univ, Cambridge, MA 02138 USA
[33] Univ London Imperial Coll Sci Technol & Med, London SW7 2BW, England
[34] Univ Iowa, Iowa City, IA 52242 USA
[35] Iowa State Univ, Ames, IA 50011 USA
[36] Lab Accelerateur Lineaire, F-91898 Orsay, France
[37] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[38] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
[39] Univ London, Queen Mary, London E1 4NS, England
[40] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England
[41] Univ Louisville, Louisville, KY 40292 USA
[42] Univ Manchester, Manchester M13 9PL, Lancs, England
[43] Univ Maryland, College Pk, MD 20742 USA
[44] Univ Massachusetts, Amherst, MA 01003 USA
[45] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA
[46] McGill Univ, Montreal, PQ H3A 2T8, Canada
[47] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[48] Univ Milan, Ist Nazl Fis Nucl, I-20133 Milan, Italy
[49] Univ Mississippi, University, MS 38677 USA
[50] Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada
关键词
D O I
10.1103/PhysRevLett.91.161801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present measurements of the branching fractions of the decays B+-->eta(')K(+) and B-0-->eta(')K(0). For B-0-->eta(')K(S)(0) we also measure the time-dependent CP-violation parameters (SetaKS0)-K-' and (CetaKS0)-K-', and for B+-->eta(')K(+) the time-integrated charge asymmetry A(ch). The data sample corresponds to 88.9x10(6) B (B) over bar pairs produced by e(+)e(-) annihilation at the Y(4S). The results are B(B+-->eta(')K(+))=(76.9+/-3.5+/-4.4)x10(-6), <tcal>B</tcal>(B-0-->eta(')K(0))=(60.6+/-5.6+/-4.6)x10(-6), (SetaKS0)-K-'=0.02+/-0.34+/-0.03, (CetaKS0)-K-'=0.10+/-0.22+/-0.04, and A(ch)=0.037+/-0.045+/-0.011.
引用
收藏
页码:1618011 / 1618017
页数:7
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