Proton and deuteron F_2 structure function at low Q^2
Creators
- Tvaskis, V.1, 2, 3
- Arrington, J.4
- Asaturyan, R.5
- Baker, O. K.3
- Blok, H. P.1, 2
- Bosted, P.6
- Boswell, M.7
- Bruell, A.8
- Christy, M. E.3
- Cochran, A.3
- Ent, R.6
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Filippone, B. W.9
- Gasparian, A.3
- Keppel, C. E.3, 6
- Kinney, E.10
- Lapikás, L.2
- Lorenzon, W.11
- Mack, D. J.6
- Mammei, J.12
- Martin, J. W.9
- Mkrtchyan, H.5
- Niculescu, I.13
- Piercey, R. B.14
- Potterveld, D. H.4
- Smith, G.6
- Spurlock, K.14
- van der Steenhoven, G.2
- Stepanyan, S.5
- Tadevosyan, V.5
- Wood, S. A.6
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1.
VU Amsterdam
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2.
National Institute for Subatomic Physics
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3.
Hampton University
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4.
Argonne National Laboratory
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5.
Alikhanyan National Laboratory
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6.
Thomas Jefferson National Accelerator Facility
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7.
Randolph College
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8.
Massachusetts Institute of Technology
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9.
California Institute of Technology
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10.
University of Colorado Boulder
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11.
University of Michigan–Ann Arbor
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12.
Juniata College
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13.
George Washington University
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14.
Mississippi State University
Abstract
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 < Q^2 < 2.8 GeV^2 and Bjorken x values from 0.009 to 0.45, thus extending the knowledge of F_2 to low values of Q^2 at low x. Next-to-next-to-leading-order calculations using recent parton distribution functions start to deviate from the data for Q^2 < 2 GeV^2 at the low and high x values. Down to the lowest value of Q^2, the structure function is in good agreement with a parametrization of F_2 based on data that have been taken at much higher values of Q^2 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 Q^2 at low Q^2.
Additional Information
© 2010 American Physical Society. Received 26 January 2010; published 19 May 2010. This work is supported in part by research grants from the US Department of Energy, the US National Science Foundation, and the Stichting voor Fundamenteel Onderzoek der Materie (FOM) of the Netherlands. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility under the US Department of Energy Contract No. DEAC05-84ER40150.Attached Files
Published - Tvaskis2010p10324Phys_Rev_C.pdf
Files
Tvaskis2010p10324Phys_Rev_C.pdf
Additional details
Identifiers
- Eprint ID
- 18706
- Resolver ID
- CaltechAUTHORS:20100616-113533670
Funding
- U. S. Department of Energy
- NSF
- Stichting voor Fundamenteel Onderzoek der Materie (FOM) of the Netherlands
Dates
- Created
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2010-06-16Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field