Low-Mass Electron-Pair Anomaly in 17-GeV/c $π^{-} p$ Collisions

14 December 1981

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 47 (24) , 1686-1689
https://doi.org/10.1103/physrevlett.47.1686

Abstract

Inclusive

e^{+} e^{-}

production in 17-GeV/c

π^{-} p

collisions has been measured. An excess of

e^{+} e^{-}

pairs over those from known sources for

0.1 <~ m_{ee} <~ 0.6

GeV and

x < 0.5

was found. No evidence is found for enhancements in specific final states involving electrons and photons or charged particles. The photon multiplicity associated with these pairs is measured.

Keywords

This publication has 24 references indexed in Scilit:

Observation of a direct low-mass e+e− continuum in π-p interactions at 16 GeV/c
Physics Letters B, 1980
Dimuon production in 15.5-GeV/cπpinteractions and the observation of a low-mass continuum
Physical Review D, 1980
Measurement of electron and pion cascades in a lead-acrylic scintillator shower detector
Nuclear Instruments and Methods, 1979
Muon pair production in proton-nucleon interactions and new parton radiative processes
Physical Review D, 1978
Lepton and photon production in hadron collisions
Physics Reports, 1978
Direct Electron-Pair Production in $π^{\pm} p$ Interactions at 18 GeV/c
Physical Review Letters, 1978
Production of Dimuons in 16-GeV/c $π p$ Interactions and the Observation of a Low-Mass Continuum of Unfamiliar Origin
Physical Review Letters, 1978
Inclusive $μ$ -Pair Production at 150 GeV by $π^{+}$ Mesons and Protons
Physical Review Letters, 1976
Production of ρ0 and f in π−p interactions at 16 GeV/c and separation into fragmentation and central components
Nuclear Physics B, 1976
Practical aspects of LiXe transition radiation detectors
Nuclear Instruments and Methods, 1975

Low-Mass Electron-Pair Anomaly in 17-GeV/cπ−pCollisions

Abstract

Keywords

Low-Mass Electron-Pair Anomaly in 17-GeV/c $π^{-} p$ Collisions