Observation of the decay mode KL→π+π-e+e-

被引：8

作者：

Takeuchi, Y

Hemmi, Y

Kurashige, H

Matono, Y

Murakami, K

Nomura, T ^{[1
]}

Sakamoto, H

Sasao, N

Suehiro, M

Fukushima, Y

Ikegami, Y

Nakamura, TT

Taniguchi, T

Asai, M

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] High Energy Accelerator Res Org, Ibaraki, Osaka 3050801, Japan

[3] Hiroshima Inst Technol, Hiroshima 7315193, Japan

来源：

PHYSICS LETTERS B | 1998年 / 443卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(98)01359-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on results of an experimental search for the K-L --> pi(+)pi(-)e(+)e(-) decay mode. We found 13.5 +/- 4.0 events and determined its branching ratio to he (4.4 +/- 1.3(stat.) +/- 0.5 (syst.)) x 10(-7). The result agrees well with the theoretical prediction. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：409 / 414

页数：6

共 7 条

[1] Measurement of the branching fraction of the decay KL→π+π-e+e- [J].

Adams, J ;

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 ;

Ford, R ;

Graham, G ;

Graham, J ;

Hagan, KA ;

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 ;

Monnier, E ;

Nakaya, T ;

Nauenberg, U ;

Nelson, KS ;

Nguyen, H .

PHYSICAL REVIEW LETTERS, 1998, 80 (19) :4123-4126

[2] Review of Particle Physics [J].

The European Physical Journal C - Particles and Fields, 1998, 3 (1-4) :1-783

[3] Final-state interactions and CP violation in K-L->pi(+)pi(-)e(+)e(-) [J].

Elwood, JK ;

Wise, MB ;

Savage, MJ ;

Walden, JW .

PHYSICAL REVIEW D, 1996, 53 (07) :4078-4081

[4] K-L-]PI(+)PI(-)E(+)E(-) [J].

ELWOOD, JK ;

WISE, MB ;

SAVAGE, MJ .

PHYSICAL REVIEW D, 1995, 52 (09) :5095-5105

[5] CURRENT ALGEBRA, FIELD-CURRENT IDENTITY, K20K1O ELECTROMAGNETIC TRANSITION, AND DECAYS KO-]PIPIE+E- [J].

MAJUMDAR, DP ;

SMITH, J .

PHYSICAL REVIEW, 1969, 187 (05) :2039-&

[6] Experimental search for the decay mode K-L->pi(+)pi(-)e(+)e(-) [J].

Nomura, T ;

Hemmi, Y ;

Kurashige, H ;

Matono, Y ;

Murakami, K ;

Sakamoto, H ;

Sasao, N ;

Suehiro, M ;

Takeuchi, Y ;

Fukushima, Y ;

Ikegami, Y ;

Nakamura, TT ;

Taniguchi, T ;

Asai, M .

PHYSICS LETTERS B, 1997, 408 (1-4) :445-449

[7]

SASAO N, 1997, P SLAC TOP C AUG

← 1 →