Search for the decay B+→ K+ v(v)over-bar -: art. no. 101801

被引：37

作者：

Aubert, B ^{[1
]}

Barate, R

Boutigny, D

Couderc, F

Gaillard, JM

Hicheur, A

Karyotakis, Y

Lees, JP

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

Lynch, G

Mir, LM

Oddone, PJ

Orimoto, TJ

Pripstein, M

Roe, NA

Ronan, MT

Shelkov, VG

Wenzel, WA

Barrett, M

Ford, KE

Harrison, TJ

Hart, AJ

机构：

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

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

[3] Univ Bari, 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 Natl Lab, Berkeley, CA 94720 USA

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

[9] Ruhr Univ Bochum, Inst Expt Phys 1, 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] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

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

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

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

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

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

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

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

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

[33] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

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

[38] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy

[39] Univ Perugia, 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 72E, Merseyside, England

[43] Queen Mary Univ London, 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 | 2005年 / 94卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.94.101801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We search for the rare flavor-changing neutral-current decay B+ -> K+ v (v) over tilde in a data sample of 82 fb(-1) collected with the BABAR detector at the PEP-II B-factory. Signal events are selected by examining the properties of the system recoiling against either a reconstructed hadronic or semileptonic charged-B decay. Using these two independent samples we obtain a combined limit of B(B+ -> K+ v (v) over bar) < 5.2 x10(-5) at the 90% confidence level. In addition, by selecting for pions rather than kaons, we obtain a limit of B(B+ -> pi(+) v (v) over bar) < 1.0 x 10(-4) using only the hadronic B reconstruction method.

引用

页数：7

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