A precision measurement of direct CP violation in the decay of neutral kaons into two pions

被引：233

作者：

Batley, JR ^{[1
]}

Dosanjh, RS

Gershon, TJ

Kalmus, GE

Lazzeroni, C

Munday, DJ

Olaiya, E

Patel, M

Parker, MA

White, TO

Wotton, SA

Arcidiacono, R

Barr, G

Bocquet, G

Ceccucci, A

Cuhadar-Dönszelmann, T

Cundy, D

Doble, N

Falaleev, V

Gatignon, L

Gonidec, A

Gorini, B

Grafström, P

Kubischta, W

Mikulec, I

Norton, A

Palestini, S

Panzer-Steindel, B

Schinzel, D

Wahl, H

Cheshkov, C

Hristov, P

Kekelidze, V

Madigojine, D

Molokanova, N

Potrebenikov, Y

Zinchenko, A

Rubin, P

Sacco, R

Walker, A

Bettoni, D

Calabrese, R

Dalpiaz, P

Duclos, J

Frabetti, PL

Gianoli, A

Martini, M

Masetti, L

Petrucci, E

Savrié, M

机构：

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

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

[3] Joint Nucl Res Inst, Dubna, Russia

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

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

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

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

[8] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[9] Univ Mainz, Inst Phys, D-55099 Mainz, Germany

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

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

[12] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy

[13] Scuola Normale Super Pisa, Dipartmento Fis, I-56100 Pisa, Italy

[14] Ist Nazl Fis Nucl, Sez Pisa, I-56100 Pisa, Italy

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

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

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

[18] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

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

[20] Austrian Acad Sci, Inst Hochenergiephys, A-1050 Vienna, Austria

[21] Univ Richmond, Dept Phys, Richmond, VA USA

[22] Dipartimento Fis, I-40127 Bologna, Italy

[23] Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[24] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy

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

来源：

PHYSICS LETTERS B | 2002年 / 544卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(02)02476-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The direct CP violation parameter Re(epsilon'/epsilon) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. The 2001 running period was devoted to collecting additional data under varied conditions compared to earlier years (1997-1999). The new data yield the result: Re(epsilon'/epsilon) = (13.7 +/- 3.1) x 10(-4). Combining this result with that published from the 1997, 98 and 99 data, an overall value of Re(epsilon'/epsilon) = (14.7 +/- 2.2) x 10(-4) is obtained from the NA48 experiment. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 112

页数：16

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