Observation of direct CP violation in KS,L → ππ decays

被引：404

作者：

Alavi-Harati, A ^{[1
]}

Albuquerque, IF

Alexopoulos, T

Arenton, M

Arisaka, K

Averitte, S

Barker, AR

Bellantoni, L

Bellavance, A

Belz, J

Ben-David, R

Bergman, DR

Blucher, E

Bock, GJ

Bown, C

Bright, S

Cheu, E

Childress, S

Coleman, R

Corcoran, MD

Corti, G

Cox, B

Crisler, MB

Erwin, AR

Ford, R

Glazov, A

Golossanov, A

Graham, G

Graham, J

Hagan, K

Halkiadakis, E

Hanagaki, K

Hidaka, S

Hsiung, YB

Jejer, V

Jennings, J

Jensen, DA

Kessler, R

Kobrak, HGE

LaDue, J

Lath, A

Ledovskoy, A

McBride, PL

McManus, AP

Mikelsons, P

Monnier, E

Nakaya, T

Nauenberg, U

Nelson, KS

Nguyen, H

机构：

[1] Univ Wisconsin, Madison, WI 53706 USA

[2] Univ Arizona, Tucson, AZ 85721 USA

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[4] Univ Calif San Diego, La Jolla, CA 92093 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[6] Univ Colorado, Boulder, CO 80309 USA

[7] Elmhurst Coll, Elmhurst, IL 60126 USA

[8] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[9] Osaka Univ, Toyonaka, Osaka 560, Japan

[10] Rice Univ, Houston, TX 77005 USA

[11] Rutgers State Univ, Piscataway, NJ 08855 USA

[12] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[13] Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.83.22

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have compared the decay rates of K-L and K-S to pi(+)pi(-) and pi(0)pi(0) final states using a subset of the data from the KTeV experiment (E832) at Fermilab. We find that the direct-CP-violation parameter Re(epsilon'/epsilon) is equal to [28.0 +/- 3.0(stat) +/- 2.8(syst)] x 10(-4). This result definitively establishes the existence of CP violation in a decay process.

引用

页码：22 / 27

页数：6

共 21 条

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