Nuclear transparency and effective kaon-nucleon cross section from the A(e,e{sup '}K{sup +}) reaction

Journal Article · Fri Jul 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.015210· OSTI ID:21596615

Nuruzzaman,; Dutta, D ^[1]; Arrington, J; Fassi, L El; Zheng, X C ^[2]; Asaturyan, R; Mkrtchyan, H; Navasardyan, T; Tadevosyan, V ^[3]; Benmokhtar, F ^[4]; Boeglin, W; Markowitz, P ^[5]; Bosted, P; Bruell, A; Chudakov, E; Ent, R; Fenker, H C; Gaskell, D; Jones, M K; Lung, A F ^[6]

---

1. Mississippi State University, Starkville, Mississippi (United States)
2. Argonne National Laboratory, Argonne, Illinois (United States)
3. Yerevan Physics Institute, Yerevan (Armenia)
4. University of Maryland, College Park, Maryland (United States)
5. Florida International University, Miami, Florida (United States)
6. Thomas Jefferson National Laboratory, Newport News, Virginia (United States)

We have determined the transparency of the nuclear medium to kaons from A(e,e{sup '}K{sup +}) measurements on {sup 12}C, {sup 63}Cu, and {sup 197}Au targets. The measurements were performed at the Jefferson Laboratory and span a range in four-momentum-transfer squared Q{sup 2}=1.1-3.0 GeV{sup 2}. The nuclear transparency was defined as the ratio of measured kaon electroproduction cross sections with respect to deuterium ({sigma}{sup A}/{sigma}{sup D}). We further extracted the atomic number (A) dependence of the transparency as parametrized by T=(A/2){sup {alpha}-1} and, within a simple model assumption, the in-medium effective kaon-nucleon cross sections. The effective cross sections extracted from the electroproduction data were found to be smaller than the free cross sections determined from kaon-nucleon scattering experiments, and the parameter {alpha} was found to be significantly larger than those obtained from kaon-nucleus scattering. We have included similar comparisons between pion- and proton-nucleon effective cross sections as determined from electron-scattering experiments and pion-nucleus and proton-nucleus scattering data.

• OSTI ID: 21596615
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ATOMIC NUMBER
BARYON-BARYON INTERACTIONS
BARYONS
BASIC INTERACTIONS
BOSONS
CARBON 12 TARGET
CEBAF ACCELERATOR
COMPARATIVE EVALUATIONS
COPPER 63 TARGET
CROSS SECTIONS
DEUTERIUM
ELECTROMAGNETIC INTERACTIONS
ELECTRONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
FOUR MOMENTUM TRANSFER
GOLD 197 TARGET
HADRON-HADRON INTERACTIONS
HADRONS
HYDROGEN ISOTOPES
INTERACTIONS
ISOTOPES
KAON-NUCLEON INTERACTIONS
KAONS
KAONS PLUS
LEPTONS
LIGHT NUCLEI
LINEAR ACCELERATORS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MOMENTUM TRANSFER
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
ODD-ODD NUCLEI
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
SCATTERING
STABLE ISOTOPES
STRANGE MESONS
STRANGE PARTICLES
TARGETS