Cross sections and Rosenbluth separations in {sup 1}H(e,e{sup '}K{sup +})LAMBDA up to Q{sup 2}=2.35 GeV{sup 2}

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.052201· OSTI ID:21389004

Coman, M; Markowitz, P; Boeglin, W U; Klein, F; Kramer, L; Raue, B; Reinhold, J ^[1]; Aniol, K A; Margaziotis, D J ^[2]; Baker, K; Cha, J; Cole, L; Gueye, P; Hinton, W; Jackson, C; Keppel, C; Tang, L ^[3]; Breuer, H; Chang, C C; Chant, N ^[4]

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1. Florida International University, Miami, Florida 33199 (United States)
2. California State University, Los Angeles, Los Angeles, California 90032 (United States)
3. Hampton University, Hampton, Virginia 23668 (United States)
4. University of Maryland, College Park, Maryland 20742 (United States)

The kaon electroproduction reaction {sup 1}H(e,e{sup '}K{sup +})LAMBDA was studied as a function of the virtual-photon four-momentum, Q{sup 2}, total energy, W, and momentum transfer, t, for different values of the virtual-photon polarization parameter. Data were taken at electron beam energies ranging from 3.40 to 5.75 GeV. The center of mass cross section was determined for twenty-one kinematics corresponding to Q{sup 2} of 1.90 and 2.35 GeV{sup 2}, and the longitudinal, sigma{sub L}, and transverse, sigma{sub T}, cross sections were separated using the Rosenbluth technique at fixed W and t. The separated cross sections reveal a flat energy dependence at forward kaon angles not satisfactorily described by existing electroproduction models. Influence of the kaon pole on the cross sections was investigated by adopting an off-shell form factor in the Regge model, which better describes the observed energy dependence of sigma{sub T} and sigma{sub L}.

• OSTI ID: 21389004
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BASIC INTERACTIONS
BEAMS
BOSONS
CENTER-OF-MASS SYSTEM
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC INTERACTIONS
ELECTRON BEAMS
ELECTRON REACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
FORM FACTORS
GEV RANGE
GEV RANGE 01-10
HADRONS
HYDROGEN 1
HYDROGEN ISOTOPES
HYPERONS
INTERACTIONS
ISOTOPES
KAONS
KAONS PLUS
LAMBDA BARYONS
LAMBDA PARTICLES
LEPTON BEAMS
LEPTON REACTIONS
LIGHT NUCLEI
MASSLESS PARTICLES
MESONS
MOMENTUM TRANSFER
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE BEAMS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTONS
POLARIZATION
PSEUDOSCALAR MESONS
REGGE CALCULUS
SIMULATION
STABLE ISOTOPES
STRANGE MESONS
STRANGE PARTICLES