Scaling of the F-2 [F subscript 2] Structure Function in Nuclei and Quark Distributions at x > 1
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Fomin-2010-Scaling of the F2 Structure Function in Nuclei and Quark Distributions at x 1.pdf
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Author(s)
Clasie, Benjamin Michael Patrick
Seely, Jason
Date Issued
November 2010
Journal
Physical review letters
Publisher
American Physical Society
Citation
Fomin, N. et al. “Scaling of the F_{2} [F subscript 2] Structure Function in Nuclei and Quark Distributions at X > 1.” Physical Review Letters 105.21 (2010) : n. pag. © 2010 The American Physical Society
Version
Final published version
Abstract
We present new data on electron scattering from a range of nuclei taken in Hall C at Jefferson Lab. For heavy nuclei, we observe a rapid falloff in the cross section for x>1, which is sensitive to short-range contributions to the nuclear wave function, and in deep inelastic scattering corresponds to probing extremely high momentum quarks. This result agrees with higher energy muon scattering measurements, but is in sharp contrast to neutrino scattering measurements which suggested a dramatic enhancement in the distribution of the “superfast” quarks probed at x>1. The falloff at x>1 is noticeably stronger in 2H ]superscript 2 H] and 3He [superscript 3 He], but nearly identical for all heavier nuclei.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.105.212502
