The proton and deuteron F{sub 2} structure function at low Q{sup 2}.

Journal Article · Sat May 01 04:00:00 EDT 2010 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.81.055207· OSTI ID:982677

Tvaskis, V; Arrington, J; Asaturyan, R; Baker, O K; Blok, H P; Potterveld, D H

Measurements of the proton and deuteron F2 structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range 0.06<Q2<2.8 GeV2 and Bjorken x values from 0.009 to 0.45, thus extending the knowledge of F2 to low values of Q2 at low x. Next-to-next-to-leading-order calculations using recent parton distribution functions start to deviate from the data for Q2<2 GeV2 at the low and high x values. Down to the lowest value of Q2, the structure function is in good agreement with a parametrization of F2 based on data that have been taken at much higher values of Q2 or much lower values of x, and which are constrained by data at the photon point. The ratio of the deuteron and proton structure functions at low x remains well described by a logarithmic dependence on Q2 at low Q2.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 982677
• Report Number(s): ANL/PHY/JA-66239
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: May 2010 Vol. 81; ISSN 0556-2813
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DATA
DEUTERONS
DISTRIBUTION FUNCTIONS
PHOTONS
PROTONS
RANGE
STRUCTURE FUNCTIONS