Quark shapes of most modern parton distribution functions

Authors

HASAN OĞUL

Abstract

Parton distribution functions (PDFs) describe the internal structure of the proton and are necessary inputs to almost all theory predictions of hadron colliders. One way to do a precise measurement of a PDF is to measure the lepton charge asymmetry of W boson where u$\bar{d}\to W^{+}$ and $d\bar{u}\to W^{-}$. Therefore, u, d, $\bar{u}$, and $\bar{d}$ quark shapes of the most modern PDF models (NNPDF3.1, NNPDF3.0, CT14, MMHT2014, and HERAPDF2.0) are inspected using the APFEL online cluster in this paper. The ratio of $d$ to $u$ is further investigated since the charge asymmetry is sensitive to the value of $d$ over $u$ momentum distributions in the proton. $Q$ scale dependence of PDFs are further studied in a range from 1 to 100 GeV.

DOI

10.3906/fiz-1706-12

Keywords

High energy physics, parton distribution functions, NNPDF3.1, quarks

First Page

545

Last Page

550

Recommended Citation

OĞUL, HASAN (2017) "Quark shapes of most modern parton distribution functions," Turkish Journal of Physics: Vol. 41: No. 6, Article 8. https://doi.org/10.3906/fiz-1706-12
Available at: https://journals.tubitak.gov.tr/physics/vol41/iss6/8