Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Inclusive study of off-mass-shell. pi. /sup + -/p and. pi. /sup + -/. pi. /sup -/ interactions

Journal Article · · Phys. Rev. D; (United States)
; ; ; ; ; ; ; ; ; ; ;
We have studied inclusive rho/sup 0/ and ..delta../sup + +/ production in ..pi../sup +/p and ..pi../sup -/p interactions at 15 GeV/c in a region where pion exchange has been found to dominate the resonance production. By using rho/sup 0/ production, the off-mass-shell interactions of virtual pions with the target protons have been studied and compared with the same on-shell reactions at comparable energy. No significant differences between on-shell and off-shell reactions have been found in topological-cross-section ratios, inclusive longitudinal- or transverse-momentum distributions, or elastic dsigma/dt distributions. The effect of the negative mass squared of the virtual pions has also been studied. Inclusive ..delta../sup + +/ production has been found to be dominated by pion exchange for Vertical BartVertical Bar< or approx. =0.4 (GeV/c)/sup 2/. We have studied the interactions of these off-shell pions with the beam pions as a function of energy. The ratio sigma/sub el//sigma/sub T/ and the average charged-particle multiplicities have been examined and compared with those for various hadron-proton reactions. The values of have also been studied in terms of a simple model and found to give results consistent with studies at higher energies. We also present longitudinal- and transverse-momentum distributions for produced pions, as well as dsigma/dt distributions for ..pi.. ..pi.. elastic scattering.
Research Organization:
Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
OSTI ID:
6149148
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 24:5; ISSN PRVDA
Country of Publication:
United States
Language:
English

Similar Records

Forward production of. delta. (1232) and N*(1688) in the reaction. pi. /sup -/+d. -->. N/sup asterisk0/+. pi. /sup -/+(p/sub s/) at momentum 3. 65 GeV/c
Journal Article · Tue Jun 01 00:00:00 EDT 1982 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States) · OSTI ID:6235125
Study of diffraction processes in the p-barp. -->. p-barp. pi. /sup +/. pi. /sup -/. pi. /sup 0/ reaction at 22. 4 GeV/c
Journal Article · Sun Jan 31 23:00:00 EST 1988 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States) · OSTI ID:7137091
Pion production: A probe for coherence in medium-energy heavy-ion collisions
Journal Article · Mon Mar 31 23:00:00 EST 1986 · Phys. Rev. C; (United States) · OSTI ID:5872690

Related Subjects

645205 -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
645206* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON RESONANCES
BARYONS
BOSON-EXCHANGE MODELS
BOSONS
CROSS SECTIONS
DELTA-1236 RESONANCES
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
LONGITUDINAL MOMENTUM
MASS
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-MESON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N RESONANCES
OBE MODEL
OPE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
PION MINUS-PROTON INTERACTIONS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PION INTERACTIONS
PION-PROTON INTERACTIONS
RESONANCE PARTICLES
RHO-765 RESONANCES
SCATTERING
TRANSVERSE MOMENTUM
VECTOR MESONS