On a Missed Mechanism of Dielectron Production in Nucleon-Nucleon Collisions

Journal Article · Mon Oct 24 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647170· OSTI ID:21608423

Khrykin, Anatoliy S ^[1]

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1. Dzhelepov Laboratory of Nuclear Problems, JINR, 141980 Dubna, Moscow Region (Russian Federation)

We examine a new mechanism of e{sup +}e{sup -} pair production in NN collisions associated with the NN-decoupled dibaryon d{sub 1}*(1956) formation in the process NN{yields}{gamma}*d{sub 1}*, where {gamma}{sup *} is the virtual photon which converts into a e{sup +}e{sup -} pair. It is shown that a substantial excess of dielectron yields from Ca+Ca and C+C collisions at 1 GeV/A in the dielectron mass spectra in the region from 0.2 to 0.5 GeV/c{sup 2} measured by the DLS Collaboration as compared with calculated ones can be attributed to the contribution of this mechanism. A simple means for verification of the existence of such a mechanism is proposed.

• OSTI ID: 21608423
• Journal Information: AIP Conference Proceedings, Vol. 1374, Issue 1; Conference: MENU 2010: 12. international conference on meson-nucleon physics and the structure of the nucleon, Williamsburg, VA (United States), 31 May - 4 Jun 2010; Other Information: DOI: 10.1063/1.3647170; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CALCIUM 40 REACTIONS
CALCIUM 40 TARGET
CARBON 12 REACTIONS
CARBON 12 TARGET
DIBARYONS
ELECTRONS
GEV RANGE
MASS SPECTRA
NUCLEAR REACTION YIELD
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PAIR PRODUCTION
PHOTONS
POSITRONS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATTER
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
SPECTRA
TARGETS
YIELDS