SEARCH FOR THE DECAYS K+-]PI+NU(NU)OVER-BAR AND K+-]PI+X0 FOR 150 LESS-THAN-MX0-LESS-THAN-250-MEV/C2

被引：11

作者：

ATIYA, MS

CHIANG, IH

FRANK, JS

HAGGERTY, JS

ITO, MM

KYCIA, TF

LI, KK

LITTENBERG, LS

SAMBAMURTI, A

STEVENS, A

STRAND, RC

LOUIS, WC

AKERIB, DS

MARLOW, DR

MEYERS, PD

SELEN, MA

SHOEMAKER, FC

SMITH, AJS

BLACKMORE, EW

BRYMAN, DA

FELAWKA, L

KITCHING, P

KONAKA, A

KUNO, Y

MACDONALD, JA

NUMAO, T

PADLEY, P

POUTISSOU, JM

POUTISSOU, R

ROY, J

SOLUK, R

TURCOT, AS

机构：

[1] LOS ALAMOS NATL LAB,DIV MEDIUM ENERGY PHYS,LOS ALAMOS,NM 87545

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

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

来源：

PHYSICAL REVIEW D | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.48.R1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for the decays K+ --> pi+nunuBAR and K+ --> pi+X0, where X0 is any weakly interacting neutral particle or system of neutral particles with 150 < M(X0) < 250 MeV/c2, was performed in the pion kinematic region below the K(pi2) (K+ --> pi+pi0) peak. An upper limit on B(K+ --> pi+nunuBAR) is set at 1.7 x 10(-8) (90% C.L.) and B(K+ --> pi+X0) is restricted to the 10(-7) level or lower. Limits are also set for the production of K+ --> pi+nunuBAR through scalar or tensor interactions at 1.8 x 10(-8) and 1.0 x 10(-8) (90% C.L.), respectively.

引用

页码：R1 / R4

页数：4

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