Investigation of the production of electron-positron pairs in nucleon-nucleon interactions with the HADES detector

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810060128· OSTI ID:21426717

Lapidus, K O ^[1]

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1. Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

The inclusive production of electron-positron pairs in proton-proton and deuteron-proton collisions at a beam kinetic energy of 1.25 GeV per nucleon was studied with the HADES (High Acceptance Dielectron Spectrometer) detector. The main objective of the deuteron-proton experiment was to investigate pair production in quasifree neutron-proton collisions. In the invariant-mass region M > 140 MeV/c{sup 2}, the invariant-mass spectrum determined in this channel shows a significant enhancement of the pair yield in relation to that in the case of proton-proton collisions.

• OSTI ID: 21426717
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 6; Other Information: DOI: 10.1134/S1063778810060128; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEUTERON BEAMS
ELECTRON SPECTROMETERS
ELECTRONS
GEV RANGE
KINETIC ENERGY
MASS SPECTRA
MEV RANGE
PAIR PRODUCTION
POSITRONS
PROTON BEAMS
PROTON-NEUTRON INTERACTIONS
PROTON-PROTON INTERACTIONS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BARYON-BARYON INTERACTIONS
BEAMS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
ION BEAMS
LEPTONS
MATTER
MEASURING INSTRUMENTS
NUCLEON BEAMS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE BEAMS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROTON-NUCLEON INTERACTIONS
SPECTRA
SPECTROMETERS