Measurement of branching fractions and search for CP-violating charge asymmetries in charmless two-body B decays into pions and kaons -: art. no. 151802

被引：57

作者：

Aubert, B ^{[1
]}

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

Fan, Q

Gill, MS

Gowdy, SJ

Gritsan, A

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

机构：

[1] Lab Annecy Le Vieux Phys Particules, 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, Dept Phys, N-5007 Bergen, Norway

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

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

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

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

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

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

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

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

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

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

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

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

[18] CALTECH, Pasadena, CA 91125 USA

[19] Univ Cincinnati, Cincinnati, OH 45221 USA

[20] Univ Colorado, Boulder, CO 80309 USA

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

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

[23] Ecole Polytech, F-91128 Palaiseau, France

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

[25] Elon Univ, Elonege, NC 27244 USA

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

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

[32] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

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

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

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

[39] Univ London, Imperial Coll, London SW7 2BW, England

[40] Univ London, London E1 4NS, England

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

[42] Univ Louisville, Louisville, KY 40292 USA

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

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

[45] Univ Massachusetts, Amherst, MA 01003 USA

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

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

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

[49] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[50] Univ Mississippi, University, MS 38677 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.87.151802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present measurements, based on a sample of approximately 23 x 10(6) B (B) over bar pairs, of the branching fractions and a search for CP-violating charge asymmetries in charmless hadronic decays of B mesons into two-body final states of kaons and pions. We find the branching fractions B(B-0--> pi (+)pi (-)) = (4.1 +/-1.0 +/-0.7) x 10(-6), B(B-0--> K(+)pi (-)) = (16.7 +/-1.6 +/-1.3) x 10(-6), B (B+-->K(+)pi (0)) = (10.8(-1.9)(+2.1)+/-1.0) x 10(-6), B(B+-->K(0)pi (+)) = (18.2(-3.0)(+3.3)+/-2.0) x 10(-6), B(B-0-->K(0)pi (0)) = (8.2(-2.7)(+3.1)+/-1.2) x 10(-6). We also report 90% confidence level upper limits for B meson decays to the pi (+)pi (0), K+K-, and (K) over bar K-0(+) final states. In addition, charge asymmetries have been found to be consistent with zero, where the statistical precision is in the range of +/-0.10 to +/-0.18, depending on the decay mode.

引用

页码：151802/1 / 151802/7

页数：7

共 19 条

[1] Observation of large CP violation in the neutral B meson system -: art. no. 091802 [J].

Abe, K ;

Abe, R ;

Adachi, I ;

Ahn, BS ;

Aihara, H ;

Akatsu, M ;

Alimonti, G ;

Asai, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Aushev, T ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behara, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chao, Y ;

Chen, KF ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Eiges, V ;

Enari, Y ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fukunaga, C ;

Fukushima, M ;

Gabyshev, N ;

Garmash, A ;

Gershon, TJ ;

Gordon, A ;

Gotow, K ;

Guler, H ;

Guo, R ;

Haba, J .

PHYSICAL REVIEW LETTERS, 2001, 87 (09)

[2]

ABE K, HEPEX0106095

[3]

ABE K, HEPEX0104030

[4]

Aubert B, 2001, PHYS REV LETT, V87, DOI [10.1103/PhysRevLett.87.241801, 10.1103/PhysRevLett.87.151801]

[5]

AUBERT B, SLACPUB8569

[6] QCD factorization for B → ππ decays:: Strong phases and CP violation in the heavy quark [J].

Beneke, M ;

Buchalla, G ;

Neubert, M ;

Sachrajda, CT .

PHYSICAL REVIEW LETTERS, 1999, 83 (10) :1914-1917

[7]

Buras AJ, 1999, EUR PHYS J C, V11, P93, DOI 10.1007/s100529900201

[8] UNITARY SYMMETRY AND LEPTONIC DECAYS [J].

CABIBBO, N .

PHYSICAL REVIEW LETTERS, 1963, 10 (12) :531-&

[9]

*CERN APPL SOFTW G, 1994, GEANT VERS 3 21

[10] Measurement of charge asymmetries in charmless hadronic B meson decays [J].

Chen, S ;

Fast, J ;

Hinson, JW ;

Lee, J ;

Menon, N ;

Miller, DH ;

Shibata, EI ;

Shipsey, IPJ ;

Pavlunin, V ;

Cronin-Hennessy, D ;

Kwon, Y ;

Lyon, AL ;

Thorndike, EH ;

Jessop, CP ;

Marsiske, H ;

Perl, ML ;

Savinov, V ;

Ugolini, D ;

Zhou, X ;

Coan, TE ;

Fadeyev, V ;

Maravin, Y ;

Narsky, I ;

Stroynowski, R ;

Ye, J ;

Wlodek, T ;

Artuso, M ;

Ayad, R ;

Boulahouache, C ;

Bukin, K ;

Dambasuren, E ;

Karamnov, S ;

Kopp, S ;

Majumder, G ;

Moneti, GC ;

Mountain, R ;

Sohuh, S ;

Skwarnicki, T ;

Stone, S ;

Viehhauser, G ;

Wang, JC ;

Wolf, A ;

Wu, J ;

Csorna, SE ;

Danko, I ;

McLean, KW ;

Márka, S ;

Xu, Z ;

Godang, R ;

Kinoshita, K .

PHYSICAL REVIEW LETTERS, 2000, 85 (03) :525-529

← 1 2 →