Determination of the relative decay rate KS→πeν/KL→πeν

被引：6

作者：

Batley, J. R.

Kalmus, G. E.

Lazzeroni, C. ^{[1
]}

Munday, D. J.

Patel, M.

Slater, M. W.

Wotton, S. A.

Arcidiacono, R.

Bocquet, G.

Ceccucci, A.

Cundy, D.

Doble, N.

Falaleev, V.

Gatignon, L.

Gonidec, A.

Grafstroem, P.

Kubischta, W.

Marchetto, F.

Mikulec, I.

Norton, A.

Panzer-Steindel, B.

Rubin, P.

Wahl, H.

Goudzovski, E.

Hristov, P.

Kekelidze, V.

Litov, L.

Madigozhin, D.

Molokanova, N.

Potrebenikov, Yu.

Stoynev, S.

Zinchenko, A.

Monnier, E.

Swallow, E.

Winston, R.

Sacco, R.

Walker, A.

Baldini, W.

Dalpiaz, P.

Frabetti, P. L.

Gianoli, A.

Martini, M.

Petrucci, F.

Scarpa, M.

Savrie, M.

Bizzeti, A.

Calvetti, M.

Collazuol, G.

Graziani, G.

Iacopini, E.

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] CERN, CH-1211 Geneva, Switzerland

[3] Joint Nucl Res Inst, Dubna, Russia

[4] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60126 USA

[5] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

[6] Univ Ferrara, Dipartimento Fis, Sezione INFN, I-44100 Ferrara, Italy

[7] Univ Florence, Dipartimento Fis, Sezione INFN, I-50125 Florence, Italy

[8] Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[9] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[10] Univ Perugia, Dipartimento Fis, Sezione INFN, I-06100 Perugia, Italy

[11] Scuola Normale Super Pisa, Dipartimento Fis, Sezione INFN, I-56100 Pisa, Italy

[12] CEA Saclay, DSM DAPNIA, F-91191 Gif Sur Yvette, France

[13] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[14] Univ Turin, Dipartimento Fis Sperimentale, Sezione INFN, I-10125 Turin, Italy

[15] Soltan Inst Nucl Studies, High Energy Phys Lab, PL-00681 Warsaw, Poland

[16] Inst Hochenergiephys, Osterreichische Akad Wissenschaften, A-10560 Vienna, Austria

[17] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

[18] Univ Pisa, Dipartimento Fis, Sezione INFN, I-56100 Pisa, Italy

[19] Univ Turin, Sezione INFN, I-10125 Turin, Italy

[20] Inst Hochenergiephys, Osterreichische Akad Wissenschaften, A-1050 Vienna, Austria

[21] Univ Richmond, Richmond, VA 23173 USA

[22] Univ Ferrara, Dipartmento Fis, Sezione INFN, I-44100 Ferrara, Italy

[23] CERN, CH-1211 Geneva, Switzerland

[24] Univ Mediterrane, Ctr Phys Particules, CNRS, IN2P3, Marseille, France

[25] Univ Paris 11, CNRS, Lab Accelerateur Lineaire, IN2P3, F-91898 Orsay, France

[26] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy

[27] Univ Urbino, Inst Fis, I-61029 Urbino, Italy

[28] Univ Bonn, Inst Phys, D-53113 Bonn, Germany

来源：

PHYSICS LETTERS B | 2007年 / 653卷 / 2-4期

关键词：

kaon decays; semileptonic decays; test of standard model;

D O I：

10.1016/j.physletb.2007.07.064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The decay rate of K-S -> pi ev relative to the rate of K-L -> pi rev has been measured by the NA48 Collaboration in a neutral kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is 0.993 +/- 0.026(stat) +/- 0.022(syst), compatible with I in agreement with the Standard Model prediction at tree level. It implies B R (K-S -> pi ev) = (7.05 +/- 0.18(stat) +/- 0.16(syst)) X 10(-4). (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：145 / 150

页数：6

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