Color transparency in semi-inclusive electroproduction of {rho} mesons

Journal Article · Tue Jul 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.015208· OSTI ID:21192062

Frankfurt, L ^[1]; Miller, G A ^[2]; Strikman, M ^[3]

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1. Tel Aviv University, Tel Aviv (Israel)
2. University of Washington, Seattle, Washington 98195-1560 (United States)
3. Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

We study the electroproduction of {rho} mesons in nuclei at intermediate energies, deriving a treatment of the energy lost by the {rho} in each step of multiple scattering. This enables a close match between calculations and the experimental kinematic conditions. A standard Glauber calculation is presented, and then the effects of color-transparency are included. The influence of poor experimental resolution on the extracted transparency is assessed. The effects of {rho} meson decay inside the nucleus are examined, and are typically about 5% at most. This effect disappears rapidly as Q{sup 2} increases from about 1 to 3 GeV{sup 2}, causing a rise in the transparency that is not attributable to color transparency. The size of color transparency effects for C and Fe nuclei is studied for values of Q{sup 2} up to 10 GeV{sup 2}. The detailed results depend strongly on the assumed value of the {rho}N cross section. The overall effects of color transparency are greater than about 10% for both nuclear targets if Q{sup 2} is greater than about 5 GeV{sup 2}.

• OSTI ID: 21192062
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CARBON
COLOR MODEL
CROSS SECTIONS
DECAY
ELECTROPRODUCTION
GLAUBER THEORY
IRON
MESONS
MULTIPLE SCATTERING
NUCLEI
OPACITY
RESOLUTION
SIMULATION