Evidence for the decay K+->pi(+)nu(nu)over-bar

被引：151

作者：

Adler, S

Atiya, MS

Chiang, IH

Diwan, MV

Frank, JS

Haggerty, JS

Kettell, SH

Kycia, TF

Li, KK

Littenberg, LS

Ng, C

Sambamurti, A

Stevens, A

Strand, RC

Witzig, C

Komatsubara, TK

Kuriki, M

Muramatsu, N

Sugimoto, S

Inagaki, T

Kabe, S

Kobayashi, M

Kuno, Y

Sato, T

Shinkawa, T

Yoshimura, Y

Kishi, Y

Nakano, T

Ardebili, M

Bazarko, AO

Convery, MR

Ito, MM

Marlow, DR

McPherson, RA

Meyers, PD

Shoemaker, FC

Smith, AJS

Stone, JR

Aoki, M

Blackmore, EW

Bergbusch, PC

Bryman, DA

Konaka, A

Macdonald, JA

Mildenberger, J

Numao, T

Padley, P

Poutissou, JM

Poutissou, R

Redlinger, G

机构：

[1] HIGH ENERGY ACCELERATOR RES ORG,KEK,TANASHI,TOKYO 188,JAPAN

[2] HIGH ENERGY ACCELERATOR RES ORG,KEK,TSUKUBA,IBARAKI 305,JAPAN

[3] OSAKA UNIV,DEPT PHYS,TOYONAKA,OSAKA 560,JAPAN

[4] PRINCETON UNIV,JOSEPH HENRY LABS,PRINCETON,NJ 08544

[5] TRIUMF,VANCOUVER,BC V6T 2A3,CANADA

[6] UNIV ALBERTA,CTR SUBATOM RES,EDMONTON,AB T6G 2N5,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An event consistent with the signature expected for the rare kaon decay K+ --> pi(+) nu<(nu)over bar> has been observed. In the pion momentum region examined, 211 < P < 230 MeV/c, the backgrounds are estimated to contribute 0.08 +/- 0.03 events. If the event is due to K+ --> pi(+) nu<(nu)over bar>, the branching ratio is 4.2(-3.5)(+9.7) X 10(-10).

引用

页码：2204 / 2207

页数：4

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