Search for the rare decay B → Kv(v)over-bar

被引：42

作者：

Sanchez, P. del Amo ^{[1
]}

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

Poireau, V. ^{[1
]}

Prencipe, E. ^{[1
]}

Tisserand, V. ^{[1
]}

Tico, J. Garra ^{[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. ^{[6
]}

Brown, D. N. ^{[6
,43
]}

Hooberman, B. ^{[6
]}

Kerth, L. T. ^{[6
]}

Kolomensky, Yu G. ^{[6
]}

Lynch, G. ^{[6
]}

Osipenkov, I. L. ^{[6
]}

Tanabe, T. ^{[6
]}

Hawkes, C. M. ^{[7
]}

Watson, A. T. ^{[7
]}

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

Asgeirsson, D. J. ^{[9
]}

Hearty, C. ^{[9
]}

Mattison, T. S. ^{[9
]}

McKenna, J. A. ^{[9
]}

Khan, A. ^{[10
]}

Randle-Conde, A. ^{[10
]}

Blinov, V. E. ^{[11
]}

Buzykaev, A. R. ^{[11
]}

Druzhinin, V. P. ^{[11
]}

Golubev, V. B. ^{[11
]}

Onuchin, A. P. ^{[11
]}

Serednyakov, S. I. ^{[11
]}

Skovpen, Yu I. ^{[11
]}

Solodov, E. P. ^{[11
]}

Todyshev, K. Yu ^{[11
]}

Yushkov, A. N. ^{[11
]}

Bondioli, M. ^{[12
]}

Curry, S. ^{[12
]}

Kirkby, D. ^{[12
]}

Lankford, A. J. ^{[12
]}

Mandelkern, M. ^{[12
]}

Martin, E. C. ^{[12
]}

Stoker, D. P. ^{[12
]}

Atmacan, H. ^{[13
]}

Gary, J. W. ^{[13
]}

机构：

[1] Univ Savoie, CNRS, IN2P3, LAPP, 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, Dipartimento Fis, I-70126 Bari, Italy

[5] Univ Bergen, Inst 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 Expt Phys 1, D-44780 Bochum, Germany

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

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

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

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

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

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

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

[16] CALTECH, Pasadena, CA 91125 USA

[17] Univ Cincinnati, Cincinnati, OH 45221 USA

[18] Univ Colorado, Boulder, CO 80309 USA

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

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

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

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

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

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

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

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

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

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

[29] Indian Inst Technol, Gauhati 781039, Assam, India

[30] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

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

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

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

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

[38] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France

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

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

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

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

[43] Univ Louisville, Louisville, KY 40292 USA

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

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

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

[47] Univ Massachusetts, Amherst, MA 01003 USA

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

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

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

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 11期

基金：

美国国家科学基金会; 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;

关键词：

D O I：

10.1103/PhysRevD.82.112002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for the rare decays B+ -> K+ v (v) over bar and B-0 -> K-0 v (v) over bar using 459 x 10(6) B (B) over bar pairs collected with the BABAR detector at the SLAC National Accelerator Laboratory. Flavor-changing neutral-current decays such as these are forbidden at tree level but can occur through one-loop diagrams in the standard model (SM), with possible contributions from new physics at the same order. The presence of two neutrinos in the final state makes identification of signal events challenging, so reconstruction in the semileptonic decay channels B -> D-(*) lv of the B meson recoiling from the signal B is used to suppress backgrounds. We set an upper limit at the 90% confidence level (CL) of 1.3 x 10(-5) on the total branching fraction for B+ -> K+ v (v) over bar, and 5.6 x 10(-5) for B-0 -> K-0 v (v) over bar. We additionally report 90% CL upper limits on partial branching fractions in two ranges of dineutrino mass squared for B+ -> K+ v (v) over bar.

引用

页数：10

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