Nuclear transparency to large-angle pp elastic scattering

Journal Article · Mon Oct 10 04:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.1698· OSTI ID:6798018

Carroll, A S; Barton, D S; Bunce, G; Gushue, S; Makdisi, Y I; Heppelmann, S; Courant, H; Fang, G; Heller, K J; Marshak, M L; others, and

Large-angle pp elastic and quasielastic (p,2p) scattering have been simultaneously observed in hydrogen and each of several nuclear targets (Li, C, AL, Cu, Pb) at incident proton momenta of 6, 10, and 12 GeV/c. The nuclear transparency is the ratio of such a cross section in a nucleus to the free pp cross section. The transparency of aluminum increases with incident momentum by more than a factor of 2 from 6 to 9.5 GeV/c and falls significantly between 9.5 and 12 GeV/c. This occurs in a region where the free-proton nucleon-absorption cross section exhibits little energy dependence. QCD predicts an increase in transparency with energy.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6798018
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:15; ISSN PRLTA
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALUMINIUM 27 TARGET
BARYON REACTIONS
BARYONS
BROOKHAVEN AGS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COPPER 63 TARGET
CYCLIC ACCELERATORS
DATA
DIRECT REACTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 01-10
GEV RANGE 10-100
HADRON REACTIONS
HADRONS
HYDROGEN 1 TARGET
INFORMATION
LEAD 208 TARGET
LITHIUM 7 TARGET
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
PROTON REACTIONS
PROTONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
SYNCHROTRONS
TARGETS