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arXiv · 1012.0286

Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses

K. Kovarik·I. Schienbein·F. Olness·J. Y. Yu·C. Keppel·J. G. Morfin·J. F. Owens·T. Stavreva
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Abstract

We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing criterion based on the chi^2 distribution which we apply to the total chi^2 as well as to the chi^2 of the individual data sets. We find that it is not possible to accommodate the data from nu-A and l^+A DIS by an acceptable combined fit. Our result has strong implications for the extraction of both nuclear and proton parton distribution functions using combined neutrino and charged-lepton data sets.

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K. Kovarik, I. Schienbein, F. Olness, J. Y. Yu, C. Keppel, J. G. Morfin, J. F. Owens, T. Stavreva. 2010-12-01. Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses. https://doi.org/10.1103/physrevlett.106.122301

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