SEARCH FOR NEW LONG-LIVED PARTICLES WITH MASSES IN THE RANGE 1.4 TO 3.0 GEV, AT THE CERN ISR

被引：12

作者：

ARMITAGE, JCM

BENZ, P

BOBBINK, GJ

ERNE, FC

KOOIJMAN, P

LOEBINGER, FK

MACBETH, AA

MONTGOMERY, HE

MURPHY, PG

POORTHUIS, JJM

RABOU, L

RUDGE, A

SENS, JC

STORK, D

TIMMER, J

机构：

[1] DARESBURY LAB,WARRINGTON WA4 4AD,ENGLAND

[2] FOM,FDN FUNDAMENTAL RES MAT,AMSTERDAM,NETHERLANDS

[3] UNIV MANCHESTER,MANCHESTER M13 9PL,LANCASHIRE,ENGLAND

[4] STATE UNIV UTRECHT,UTRECHT,NETHERLANDS

来源：

NUCLEAR PHYSICS B | 1979年 / 150卷 / 01期

基金：

英国科研创新办公室;

关键词：

D O I：

10.1016/0550-3213(79)90294-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A search has been made at the CERN ISR for long-lived non-annihilating particles of two types: those which exhibit strong interactions and those which do not (heavy leptons). Invariant cross section upper limits of 6 nb GeV-2 and 1.8 nb GeV-2 were measured for these two classes of particles, respectively, for particle masses close to the antideuteron mass. Upper limits are also placed on the production of new particles with masses in the range 1.4 to 3.0 GeV, and invariant cross sections are quoted for π-, p, d production. The experiment was performed at √s = 53 GeV with x(= 2pL/√s) in the range 0.07 to 0.15 and pT between 0.08 and 0.16 GeV/c. Antideuterons were identified by annihilation in a 1.4 m3 scintillation calorimeter. © 1979.

引用

页码：87 / 108

页数：22

共 21 条

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