Precision measurement of the ratio of the charged kaon leptonic decay rates

被引：96

作者：

Lazzeroni, C. ^{[1
]}

Romano, A. ^{[1
]}

Ceccucci, A. ^{[2
]}

Danielsson, H. ^{[2
]}

Falaleev, V. ^{[2
]}

Gatignon, L. ^{[2
]}

Goy Lopez, S. ^{[2
]}

Hallgren, B. ^{[2
]}

Maier, A. ^{[2
]}

Peters, A. ^{[2
]}

Piccini, M. ^{[2
]}

Riedler, P. ^{[2
]}

Frabetti, P. L. ^{[3
]}

Gersabeck, E. ^{[3
]}

Kekelidze, V. ^{[3
]}

Madigozhin, D. ^{[3
]}

Misheva, M. ^{[3
]}

Molokanova, N. ^{[3
]}

Movchan, S. ^{[3
]}

Potrebenikov, Yu. ^{[3
]}

Shkarovskiy, S. ^{[3
]}

Zinchenko, A. ^{[3
]}

Rubin, P. ^{[4
]}

Baldini, W. ^{[5
,31
]}

Ramusino, A. Cotta ^{[5
,31
]}

Dalpiaz, P. ^{[5
,31
]}

Fiorini, M. ^{[5
,31
]}

Gianoli, A. ^{[5
,31
]}

Norton, A. ^{[5
,31
]}

Petrucci, F. ^{[5
,31
]}

Savrie, M. ^{[5
,31
]}

Bizzeti, A. ^{[6
,28
]}

Bucci, F. ^{[6
,29
]}

Iacopini, E. ^{[6
,29
]}

Lenti, M. ^{[6
]}

Veltri, M. ^{[6
,30
]}

Antonelli, A. ^{[7
]}

Moulson, M. ^{[7
]}

Raggi, M. ^{[7
]}

Spadaro, T. ^{[7
]}

Eppard, K. ^{[8
]}

Hita-Hochgesand, M. ^{[8
]}

Kleinknecht, K. ^{[8
]}

Renk, B. ^{[8
]}

Wanke, R. ^{[8
]}

Winhart, A. ^{[8
]}

Winston, R. ^{[9
]}

Bolotov, V. ^{[10
]}

Duk, V. ^{[10
]}

Gushchin, E. ^{[10
]}

机构：

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

[2] CERN, CH-1211 Geneva 23, Switzerland

[3] Joint Inst Nucl Res, Dubna 141980, MO, Russia

[4] George Mason Univ, Fairfax, VA 22030 USA

[5] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44122 Ferrara, Italy

[6] Sez INFN Firenze, I-50019 Sesto Fiorentino, FI, Italy

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

[8] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[9] Univ Calif, Merced, CA 95344 USA

[10] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[11] Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy

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

[13] Sez INFN Perugia, I-06100 Perugia, Italy

[14] Univ Pisa, Dipartimento Fis, I-56100 Pisa, Italy

[15] Sez INFN Pisa, I-56100 Pisa, Italy

[16] Scuola Normale Super Pisa, I-56100 Pisa, Italy

[17] Inst High Energy Phys, Protvino 142281, MO, Russia

[18] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[19] Sez INFN Roma 1, I-00185 Rome, Italy

[20] Sez INFN Roma Tor Vergata, I-00133 Rome, Italy

[21] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[22] Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78240, Mexico

[23] Stanford Univ, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[24] Univ Sofia, Fac Phys, Sofia 1164, Bulgaria

[25] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy

[26] Sez INFN Torino, I-10125 Turin, Italy

[27] TRIUMF, Vancouver, BC V6T 2A3, Canada

[28] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41125 Modena, Italy

[29] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, FI, Italy

[30] Univ Urbino, Ist Fis, I-61029 Urbino, Italy

[31] Sez INFN Ferrara, I-44122 Ferrara, Italy

[32] Sez INFN Napoli, I-80126 Naples, Italy

来源：

PHYSICS LETTERS B | 2013年 / 719卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

SIMULATION;

D O I：

10.1016/j.physletb.2013.01.037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A precision measurement of the ratio R-K of the rates of kaon leptonic decays K-+/- -> e(+/-)v and K-+/- -> mu(+/-)v with the full data sample collected by the NA62 experiment at CERN in 2007-2008 is reported. The result, obtained by analysing similar to 150 000 reconstructed K-+/- -> e(+/-)v candidates with 11% background contamination, is R-K = (2.488 +/- 0.010) x 10(-5), in agreement with the Standard Model expectation. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：326 / 336

页数：11

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