Nuclear effects in extracting sin²θ_W and a probe for short-range correlations

2023/05/19 by Yang, Xing-Hua, Huang, Fei, Xu, Ji · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2305.11538

Abstract

We investigate the neutral-current neutrino-nucleon deep inelastic scattering with particular emphasis on short-range correlation and EMC effect, as well as their impact on the weak-mixing angle sin²θ_W determination. The ratios of structure function F_2(NC)^A and x F_3(NC)^A are presented where the nuclei A are chosen as carbon, iron and lead. One kind of universal modification function is proposed which would provide a nontrivial test of SRC universality on the platform of neutrino-nucleon DIS. In addition, we study the impact of ``SRC-driven'' nuclear effects on the extraction of sin²θ_W which is naturally associated with the renowned NuTeV anomaly. The results indicate that these effects may account for a substantial fraction of the NuTeV anomaly and considerably affect the value of extracted sin²θ_W.

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