# Europhysics Conference on High-Energy Physics 2011

Jul 20 – 27, 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

## Parton distribution functions from DIS data

Not scheduled
Dauphine (Alpes Congrès - Alpexpo)

Poster QCD

### Speaker

Prof. Ali N. khorramian (Semnan university and IPM)

### Description

In this article we present the results of our QCD analysis for proton structure function $F_{2}^{p} (x,Q^2)$ in order to determine the parton distributions at next-to-leading order (NLO) of QCD. We also study the heavy quark contributions to the proton structure function $F_2^i(x,Q^2)$, with $i$ = $c$, $b$ within the framework of the so called `fixed flavor number scheme' (FFNS) parton model predictions at high energy colliders which is fully predictive in the heavy quark sector where the heavy quark flavors are produced entirely perturbatively from the initial light ($u$, $d$, $s$) quarks and gluons - in full agreement with present experiments. The results in the fixed-flavor scheme are compared with those of the general-mass variable-flavor-number scheme, fixed-flavor scheme and other prescriptions used in global fits of PDFs. We use a wide range of the inclusive neutral-current deep-inelastic-scattering (DIS) world data in the present QCD analysis. Our results are in very good agreement with the recent measurements of $F_{2}^{p} (x,Q^2)$.}

### Primary author

Prof. Ali N. khorramian (Semnan university and IPM)

### Co-authors

Mr Hamzeh Khanpour (Semnan university) Dr shahin Atashbar (IPM)

### Presentation materials

 EPS2011_PI-khorramian.pdf EPS2011_PI-khorramian.pptx