DIS2022: XXIX International Workshop on Deep-Inelastic Scattering and Related Subjects

Different PDFs sets and the $k_t$-factorization structure functions and the Gaussian $k_t$-dependence of KMR UPDFs

Not scheduled

20m

Parallel talk WG1: Structure Functions and Parton Densities WG1: Structure Functions and Parton Densities

Speaker

majid modarres (University of Tehran)

Description

In this work, we investigate the dependence of proton $k_t$-factorization structure functions on the different sets of parton distribution functions (PDFs), i.e. MMHT2014, CJ15lo, CTEQ6l1, HERAPDF15, MSTW2008 and MSHT20. The Kimber-Martin-Ryskin (KMR) unintegrated parton distribution functions (UPDFs), which can use the above PDFs sets as input, are considered to calculate the
proton $k_t$-factorization structure functions. The results are compared with the experimental data of ZEUS, NMC and H1+ZEUS at $Q^2 =27$ and $90$ $GeV^2$. The ratios of different PDFs and UPDFs sets are also evaluated and discussed. Then, by fitting a Gaussian dependence on the transverse momentum of the KMR UPDFs and averaging over $x$ (the fractional parton momentum), we obtain the average transverse momentums in the scale range $Q^2=2.4-1.44\times10^4$ $GeV^2$, which is in agreement with the other groups predictions. Finally, we explore for what amount of the average transverse momentum, the results of proton structure function with the KMR UPDFs and Gaussian dependence are closer to each other.