Pion production in inelastic and central nuclear collisions at high energy

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.895· OSTI ID:6051580

Anikina, M; Golokhvastov, A; Iovchev, K; Khorozov, S; Kuznetzova, E; Lukstins, J; Okonov, E; Ostanevich, T; Toneev, V; Vardenga, G

A detailed study of pion production in inelastic and central nucleus-nucleus collisions was carried out using a 2 m streamer spectrometer. Nuclear targets mounted inside the streamer chamber were exposed to nuclear beams of 4.5 GeV/c/nucleon momentum. A systematic study of the influence of the central trigger on observed data is performed. The data on multiplicities, rapidities, transverse momenta, and emission angles of negative pions are presented for various pairs of colliding nuclei. Intercorrelations between various characteristics are studied and discussed. The results are compared with predictions of some theoretical models. It is shown that the main features of the pion production in nuclear collisions can be satisfactorily described by a model assuming independent nucleon-nucleon collisions with subsequent cascading process. However, the observed correlation between ..lambda.. and pion characteristics seems to be unexplained by this picture.

• Research Organization: Joint Institute for Nuclear Research, Dubna, Union of Soviet Socialist Republics
• OSTI ID: 6051580
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651425* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FLUIDS
GAS TRACK DETECTORS
GASES
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INTERACTIONS
LINEAR MOMENTUM
MATTER
MEASURING INSTRUMENTS
MESONS
MULTIPLICITY
NEON
NONMETALS
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PIONS
PIONS MINUS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RARE GASES
SCATTERING
SPARK CHAMBERS
STREAMER SPARK CHAMBERS
TRANSVERSE MOMENTUM