Off-mass-shell deformation of the nucleon structure function

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.377· OSTI ID:277418

Umnikov, A Y; Khanna, F C ^[1]; Kaptari, L P ^[2]

---

1. Theoretical Physics Institute, Physics Department, University of Alberta, Edmonton, Alberta, T6G 2J1 (CANADA)
2. Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna (Russia)

The off-mass-shell behavior of the nucleon structure function {ital F}{sup {ital N}}{sub 2} is studied within an approach motivated by the Sullivan model. Deep inelastic scattering on the nucleon is considered to second order in the pion-nucleon coupling constant, corresponding to the dressing of the bare nucleons by the mesonic cloud. The inclusive and semi-inclusive deep inelastic processes on the deuteron involving off-shell nucleons are considered. A deformation of the mesonic cloud for the off-mass-shell nucleon, compared to the free one, generates observable effects in deep inelastic scattering. In particular, it leads to the breakdown of the convolution model, i.e., the deuteron structure functions are not expressed through the free nucleon structure function. Analysis of the semi-inclusive deep inelastic scattering on the deuteron, in the spectator approximation, shows that this reaction opens new possibilities to study the role of the off-shell effects in determining the nucleon structure function. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 277418
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COUPLING CONSTANTS
DEEP INELASTIC SCATTERING
DEFORMATION
DEUTERONS
MASS
NUCLEONS
PION-NUCLEON INTERACTIONS
SHELLS
STRUCTURE FUNCTIONS