Production of delta isobars on tantalum nuclei in CTa collisions at a projectile momentum of 4.2 GeV/c per nucleon

A procedure that relies on analyzing the angle between the momenta of the proton and the pion originating from CTa interaction at a projectile momentum of 4.2 GeV/ c per nucleon was used to investigate for the first time the production of Δ 0 and Δ ++ resonances in such interactions and to determine...

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Bibliographic Details
Published in:Physics of atomic nuclei 2010-03, Vol.73 (3), p.433-442
Main Author: Olimov, Kh. K.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CARBON
CARBON 12
CARBON ISOTOPES
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
Elementary Particles and Fields
ELEMENTS
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOBARIC NUCLEI
ISOTOPES
LIGHT NUCLEI
MASS DISTRIBUTION
MESONS
METALS
NONMETALS
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
Particle and Nuclear Physics
PARTICLE INTERACTIONS
Physics
Physics and Astronomy
PIONS
PIONS MINUS
PROTONS
PSEUDOSCALAR MESONS
REFRACTORY METALS
RESONANCE
SPATIAL DISTRIBUTION
STABLE ISOTOPES
TANTALUM
TRANSITION ELEMENTS
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Description
Summary:A procedure that relies on analyzing the angle between the momenta of the proton and the pion originating from CTa interaction at a projectile momentum of 4.2 GeV/ c per nucleon was used to investigate for the first time the production of Δ 0 and Δ ++ resonances in such interactions and to determine their parameters. The criterion of stability in the parameter a characterizing the background contribution was presented for the first time and was used to reconstruct the mass distributions of Δ 0 and Δ ++ resonances. The contributions of Δ 0 - and Δ ++ -resonance decays to the production of charged pions were estimated. The results of this study are compared with similar data obtained by using the analogous procedure for Δ 0 and Δ ++ resonances produced on carbon nuclei in CC and 4 HeC collisions at a projectile momentum of 4.2 GeV/ c per nucleon and in π −12 C interactions at a projectile momentum of 40 GeV/ c .
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778810030051