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

被引：83
作者：
Kovarik, K. [1 ,2 ]
Schienbein, I. [1 ]
Olness, F. I. [3 ]
Yu, J. Y. [3 ]
Keppel, C. [4 ,5 ]
Morfin, J. G. [6 ]
Owens, J. F. [7 ]
Stavreva, T. [1 ]
机构：
[1] Univ Grenoble 1, CNRS IN2P3, INPG, LPSC,UMR5821, F-38026 Grenoble, France
[2] Karlsruhe Inst Technol, D-76128 Karlsruhe, Germany
[3] So Methodist Univ, Dallas, TX 75275 USA
[4] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23602 USA
[5] Hampton Univ, Hampton, VA 23668 USA
[6] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[7] Florida State Univ, Tallahassee, FL 32306 USA
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 12期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.106.122301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 (+/-)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(+/-)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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