Scaling of the $F_2$ structure function in nuclei and quark distributions at $x>1$ - INSPIRE

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Scaling of the $F_2$ structure function in nuclei and quark distributions at $x>1$

N. Fomin
(
- Virginia U. and
- Tennessee U.
)
,
J. Arrington
(
- Argonne
)
,
D.B. Day
(
- Virginia U.
)
,
D. Gaskell
(
- Jefferson Lab
)
,
A. Daniel
(
- Houston U.
)

Aug, 2010

5 pages

Published in:

Phys.Rev.Lett. 105 (2010) 212502

e-Print:

1008.2713 [nucl-ex]

DOI:

10.1103/PhysRevLett.105.212502

Report number:

JLAB-PHY-10-1238

View in:

reference search31 citations

Citations per year

Abstract: (arXiv)

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 `super-fast' quarks probed at x>1. The falloff at x>1 is noticeably stronger in ^2H and ^3He, but nearly identical for all heavier nuclei.

25.30.Fj
13.60.Hb
24.85.+p
electron nucleus: inclusive reaction
nucleon: structure function
scaling
x-dependence
momentum transfer dependence
mass number: dependence
spectrometer

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Figures(0)

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