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

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 `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.

arXiv comment5 pages, 4 figures, to be submitted to physical review

References in corpus (9)

• New measurements of the EMC effect in very light nuclei
• A Review of Target Mass Corrections
• Hadrons in the Nuclear Medium
• x- and xi-scaling of the Nuclear Structure Function at Large x
• Low-Q scaling, duality, and the EMC effect
• Inclusive Electron Scattering from Nuclei at $x\simeq 1$
• Coulomb distortion of relativistic electrons in the nuclear electrostatic field
• Nuclear Structure Functions in the Large x Large Q^2 Kinematic Region in Neutrino Deep Inelastic Scattering
• Q**2-dependence of deep inelastic lepton scattering off nuclear targets

Cited by in corpus (26)

• nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework
• New measurements of high-momentum nucleons and short-range structures in nuclei
• Hard probes of short-range nucleon-nucleon correlations
• Progress in understanding short-range structure in nuclei: an experimental perspective
• New Results on Short-Range Correlations in Nuclei
• Nuclear parton distribution functions with uncertainties in a general mass variable flavor number scheme
• Removal Energies and Final State Interaction in Lepton Nucleus Scattering
• Measurement of the EMC effect in light and heavy nuclei
• Exposing Novel Quark and Gluon Effects in Nuclei
• Lepton-Nucleus Cross Section Measurements for DUNE with the LDMX Detector
• Assessing the accuracy of the GENIE event generator with electron-scattering data
• Electron Scattering and Neutrino Physics
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Searching for three-nucleon short-range correlations
• Comparison of optical potential for nucleons and $\Delta$ resonances
• Target mass corrections in lepton--nucleus DIS: theory and applications to nuclear PDFs
• Probing superfast quarks in nuclei through dijet production at the LHC
• Deep-inelastic and quasielastic electron scattering from $A=3$ nuclei
• Short-range correlations and their implications for isospin-dependent modification of nuclear quark distributions
• QCD Evolution of Superfast Quarks
• Quasielastic electron-deuteron scattering in the weak binding approximation
• Electron-nucleus cross sections from transfer learning
• Azimuthal Dependence of DIS with Spin-1 Target
• Hard processes in multi-TeV ion collisions
• Re-optimization of a deep neural network model for electron-carbon scattering using new experimental data
• The SHMS 11 GeV/c Spectrometer in Hall C at Jefferson Lab