ncteq is hosted by Hepforge, IPPP Durham

nCTEQ15HIX results:


  • nCTEQ15HIX bound proton grids:  
    • Full PDF uncertainty sets: here (86 Mb)
    • Mathematica ManeParse Testing Code for nCTEQ15HIX: here (8.5 Mb)

  • nCTEQ15HIX_FullNuc full nucleus grids   (Z fp + N fn)/A
    • Full PDF uncertainty sets: here (86 Mb)

If you use any of the grids provided here, please cite

  • nCTEQ15HIX: "Extending nuclear PDF analyses into the high-x , low-Q2 region"
    E.P. Segarra, T. Jezo, A. Accardi, P. Duwentaster, O. Hen, T.J. Hobbs, C. Keppel, M. Klasen, K. Kovarik, A. Kusina, J.G. Morfin, K.F. Muzakka, F.I. Olness, I. Schienbein, J.Y. Yu.
    Phys.Rev.D 103 (2021) 11, 114015   e-Print: 2012.11566 [hep-ph]

We use the nCTEQ analysis framework to investigate nuclear Parton Distribution Functions (nPDFs) in the region of large x and intermediate-to-low Q, with special attention to recent JLab Deep Inelastic Scattering data on nuclear targets. This data lies in a region which is often excluded by W and Q cuts in global nPDF analyses. As we relax these cuts, we enter a new kinematic region, which requires new phenomenology. In particular, we study the impact of i) target mass corrections, ii) higher twist corrections, iii) deuteron corrections, and iv) the shape of the nuclear PDF parametrization at large-x close to one. Using the above tools, we produce a new nPDF set (named nCTEQ15HIX) which yields a good description of the new JLab data in this challenging kinematic region, and displays reduced uncertainties at large x, in particular for up and down quark flavors.

The [x,Q2] Kinematic plane

[x,Q] Kinematic Plane

Data & Theory Comparison

Data & Theory Comparison

The [x,Q2] Kinematic plane

PDF Comparison

for comments or requests contact K.Kovarik