Further search for the decay K+→π+ν(ν)over-bar

被引：91

作者：

Adler, S ^{[1
]}

Atiya, MS

Chiang, IH

Diwan, MV

Frank, JS

Haggerty, JS

Jain, V

Kettell, SH

Kycia, TF

Li, KK

Littenberg, LS

Ng, C

Strand, RC

Witzig, C

Kazumori, M

Komatsubara, TK

Kuriki, M

Muramatsu, N

Otomo, A

Sugimoto, S

Inagaki, T

Kabe, S

Kobayashi, M

Kuno, Y

Sato, T

Shinkawa, T

Yoshimura, Y

Kishi, Y

Nakano, T

Sasaki, T

Ardebili, M

Bazarko, AO

Convery, MR

Ito, MM

Marlow, DR

McPherson, RA

Meyers, PD

Shoemaker, FC

Smith, AJS

Stone, JR

Aoki, M

Bergbusch, PC

Blackmore, EW

Bryman, DA

Konaka, A

Macdonald, JA

Mildenberger, J

Numao, T

Padley, P

Poutissou, JM

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

[2] KEK, High Energy Accelerator Res Org, Tanashi Branch, Tanashi, Tokyo 1888501, Japan

[3] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[4] Osaka Univ, RCNP, Ibaraki, Osaka 5670047, Japan

[5] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA

[6] TRIUMF, Vancouver, BC V6T 2A3, Canada

[7] Univ Alberta, Ctr Subatom Res, Edmonton, AB T6G 2N5, Canada

[8] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.84.3768

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for additional evidence for the rare kaon decay K+ --> pi(+)nu<(nu)over bar> has been made with a new data set comparable in sensitivity to the previous exposure that produced a single event. No new events were found in the pion momentum region examined, 211 < P < 229 MeV/c. Including a reanalysis of the original data set, the backgrounds were estimated to contribute 0.08 +/- 0.02 events. Based on one observed event, the new branching ratio is B(K+ --> pi(+)nu<(nu)over bar>) = 1.5(-1.2)(+3.4) x 10(-10).

引用

页码：3768 / 3770

页数：3

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