English

Nuclear effects in extracting $\sin^2\theta_W$ and a probe for short-range correlations

High Energy Physics - Phenomenology 2023-05-29 v2

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 sin2θW\sin^2\theta_W determination. The ratios of structure function F2(NC)AF_{2(NC)}^{A} and xF3(NC)Ax F_{3(NC)}^{A} are presented where the nuclei AA 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 sin2θW\sin^2\theta_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 sin2θW\sin^2\theta_W.

Keywords

Cite

@article{arxiv.2305.11538,
  title  = {Nuclear effects in extracting $\sin^2\theta_W$ and a probe for short-range correlations},
  author = {Xing-Hua Yang and Fei Huang and Ji Xu},
  journal= {arXiv preprint arXiv:2305.11538},
  year   = {2023}
}

Comments

8 pages, 7 figures