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Scaling function and nucleon momentum distribution

Journal Article · · Physical Review. C, Nuclear Physics
 [1];  [2]; ;  [3];  [4]
  1. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, ES-41080 Sevilla (Spain)
  2. Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
  3. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia (Bulgaria)
  4. Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
+ Show Author Affiliations
Scaling studies of inclusive quasielastic electron scattering reactions have been used in the past as a basic tool to obtain information on the nucleon momentum distribution in nuclei. However, the connection between the scaling function, extracted from the analysis of cross-section data, and the spectral function only exists assuming very restricted approximations. We revisit the basic expressions involved in scaling studies and how they can be linked to the nucleon momentum distribution. In particular, the analysis applied in the past to the so-called scaling region, that is, negative values of the scaling variable y, is extended here to positive y, as a 'universal' superscaling function has been extracted from the analysis of the separated longitudinal data. This leads to results that clearly differ from those based solely on the negative-y scaling region, providing new information on how the energy and momentum are distributed in the spectral function.
OSTI ID:
21389067
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

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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
BARYONS
CALCULATION METHODS
CROSS SECTIONS
DISTRIBUTION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
LEPTONS
NUCLEI
NUCLEONS
SCALING
SCATTERING
SPECTRAL FUNCTIONS