Search for the decay KL→π0ν(ν)over-bar

被引：22

作者：

Adams, J ^{[1
]}

Alavi-Harati, A

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

Field, S

Ford, R

Graham, G

Graham, J

Hagan, K

Halkiadakis, E

Hanagaki, K

Hazumi, M

Hidaka, S

Hsiung, YB

Jejer, V

Jennings, J

Jensen, DA

Johnson, PT

Kessler, R

Kobrak, HGE

LaDue, J

Lath, A

Ledovskoy, A

McManus, AP

Mikelsons, P

Mochida, S

Monnier, E

Nakaya, T

Nauenberg, U

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] Fermi 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

来源：

PHYSICS LETTERS B | 1999年 / 447卷 / 3-4期

基金：

美国国家科学基金会; 日本学术振兴会;

关键词：

D O I：

10.1016/S0370-2693(98)01593-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a search for the rare decay K-L --> pi(0)nu(nu)over-bar in the KTeV experiment at Fermilab. We searched for two-photon events whose kinematics were consistent with an isolated pi(o) coming from the decay K-L --> pi(0)nu(nu)over-bar. One candidate event was observed, which was consistent with the expected level of background. An upper limit on the branching ratio was determined to be B(K-L --> pi(o)nu(nu)over-bar) less-than 1.6 x 10(-6) at the 90% confidence level. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：240 / 245

页数：6

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