Subthreshold production of antinucleons and heavy quarks as a method of study of intranuclear structure

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5957295

Kopeliovich, V B

A measurement of cross sections for ''subthreshold'' production of antinucleons, K-bar mesons, and heavier particles (..lambda../sub c/,D, ...) is a very sensitive method of study of the high-momentum component (HMC) in the nucleon momentum distribution inside the nucleus. Contributions from the direct (single) process and the two-step process with a pion in the intermediate state to the cross section for antiproton production are estimated. The relative magnitude of these contributions and their energy dependence are functions of the elementary cross sections for ..pi..N..-->..p-barNN and pN..-->..N-bar3N and depend on the energy and invariant masses of the nucleons in the final state. The analysis of existing data point to the fact that the magnitude of the HMC in the copper nucleus is smaller than the value obtained with the assumption that cumulative nucleons are produced as a result of the HMC in the nucleus. In order to confirm this result, one must measure cross sections for elementary processes in the near-threshold region. The most valuable information can be extracted from the processes with incident pions (photons).

• Research Organization: Nuclear Physics Institute, Academy of Sciences of the USSR
• OSTI ID: 5957295
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 42:4
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTINUCLEONS
PARTICLE PRODUCTION
NUCLEAR STRUCTURE
MEASURING METHODS
PION REACTIONS
QUARKS
CROSS SECTIONS
ENERGY DEPENDENCE
ANTIBARYONS
ANTIMATTER
ANTIPARTICLES
BARYONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRONS
MESON REACTIONS
NUCLEAR REACTIONS
POSTULATED PARTICLES
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models
653003 - Nuclear Theory- Nuclear Reactions & Scattering