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Nuclear Corrections in Neutrino-Nucleus Deep Inelastic Scattering and their Compatibility with Global Nuclear Parton-Distribution-Function Analyses

Abstract : We perform a global \chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino--nucleus (\nu A) deep inelastic scattering (DIS), charged-lepton--nucleus (l^\pm A) 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^\pm 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^\pm A DIS by an acceptable combined fit. Our result has strong implications for the extraction of both nuclear and proton PDFs using combined neutrino and charged lepton data sets.
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http://hal.in2p3.fr/in2p3-00542354
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, December 2, 2010 - 1:42:25 PM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM

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K. Kovarik, I. Schienbein, F. Olness, J.Y. Ju, C. Keppel, et al.. Nuclear Corrections in Neutrino-Nucleus Deep Inelastic Scattering and their Compatibility with Global Nuclear Parton-Distribution-Function Analyses. Physical Review Letters, American Physical Society, 2011, 106, pp.122301. ⟨10.1103/PhysRevLett.106.122301⟩. ⟨in2p3-00542354⟩

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