Proton and deuteron F[subscript 2] structure function at low Q[superscript 2]
Author(s)
Tvaskis, V.; Arrington, J.; Asturyan, R.; Baker, O. K.; Blok, H. P.; Bosted, P.; Boswell, M.; Bruell, A.; Christy, M. E.; Cochran, A.; Ent, R.; Filippone, Bradley W.; Gasparian, A.; Keppel, C. E.; Kinney, E.; Lapikas, L.; Lorenson, W.; Mack, D. J.; Mammei, J.; Martin, J. W.; Mkrtchyan, H.; Niculescu, I.; Piercey, R. B.; Potterveld, D. H.; Smith, G.; Spurlock, K.; van der Steenhoven, G.; Stepanyan, S.; Tadevosian, V.; Wood, S. A.; ... Show more Show less
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Alternative title
Proton and deuteron F2 structure function at low Q2
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Show full item recordAbstract
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.
Date issued
2010-05Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review C
Publisher
American Physical Society
Citation
Tvaskis, V. et al. “Proton and Deuteron F_{2} Structure Function at Low Q^{2}.” Physical Review C 81.5 (2010) : 055207 © 2010 The American Physical Society.
Version: Final published version
ISSN
0556-2813