Search for the KL→π0π0e+e- decay in the KTeV experiment -: art. no. 211801

被引：5

作者：

Alavi-Harati, A

Alexopoulos, T

Arenton, M

Arisaka, K

Averitte, S

Barbosa, RF

Barker, AR

Barrio, M

Bellantoni, L

Bellavance, A

Belz, J

Bergman, DR

Blucher, E

Bock, GJ

Bown, C

Bright, S

Cheu, E

Childress, S

Coleman, R

Corcoran, MD

Corti, G

Cox, B

Erwin, AR

Ford, R

Glazov, A

Golossanov, A

Graham, G

Graham, J

Halkiadakis, E

Hamm, J

Hanagaki, K

Hidaka, S

Hsiung, YB

Jejer, V

Jensen, DA

Kessler, R

Kobrak, HGE

LaDue, J

Lath, A

Ledovskoy, A ^{[1
]}

McBride, PL

Mikelsons, P

Monnier, E

Nakaya, T

Nelson, KS

Nguyen, H

O'Dell, V

Pordes, R

Prasad, V

Qi, XR

机构：

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

[13] Univ Wisconsin, Madison, WI 53706 USA

[14] Univ Sao Paulo, Sao Paulo, Brazil

[15] CNRS, CPP Marseille, Marseille, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.89.211801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recent discovery of a large CP violating asymmetry in K-L --> pi(+)pi(-)e(+)e(-) mode has prompted us to seach for the associated K-L --> pi(0)pi(0)e(+)e(-) decay mode in the KTeV-E799 experiment at Fermilab. In 2.7 x 10(11) K-L decays, one candidate event has been observed with an expected background of 0.3 event, resulting in an upper limit for the K-L --> pi(0)pi(0)e(+)e(-) branching ratio of 6.6 x 10(-9) at the 90% C.L.

引用

页数：4

共 50 条

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Alavi-Harati, A
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PHYSICAL REVIEW LETTERS, 2004, 93 (02) : 021805 - 1
[2] First observation of the decay KL → π0e+e-γ -: art. no. 021801
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[3] Search for the decay KL → π0e+e-
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