scholarly journals Global analysis of AAC for determining polarized parton distribution functions

2006 ◽  
Author(s):  
M. Hirai
Keyword(s):  
Parton Distribution ◽  
Global Analysis ◽  
Distribution Functions ◽  
Parton Distribution Functions

scholarly journals Polarized parton distribution functions: parametrization and transverse momentum dependence

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
H. Nematollahi ◽  
P. Abolhadi ◽  
S. Atashbar ◽  
A. Mirjalili ◽  
M. M. Yazdanpanah
Keyword(s):  
Data Analysis ◽  
Transverse Momentum ◽  
Parton Distribution ◽  
Jacobi Polynomials ◽  
Global Analysis ◽  
Distribution Functions ◽  
Momentum Dependence ◽  
Parton Distribution Functions ◽  
Transverse Momentum Dependent ◽  
Transverse Momentum Dependence

AbstractWe extract the polarized parton distribution functions (PPDFs) of proton. To this end we do a global analysis on recent and up-to-dated experimental data of polarized nucleon and deuteron structure functions at the NLO accuracy of perturbative QCD. We use the Jacobi polynomials expansion technique to do the required analyses. To achieve a more realistic estimation of the PPDFs and observable uncertainties we employ the Hessian error propagation. Following that we apply a theoretical approach which is based on imposing Lorentz structure in the parton model to investigate the transverse momentum dependence of these PPDFs. In this approach, the transverse momentum dependent (TMD) polarized parton distributions, which are also called the helicity distributions, are related to the integrated ones. This relation is indicating the priority and importance of data analysis for PPDFs. The results show a convenient general treatment expected for TMD densities which are in fact resulted from data analysis and fitting processes of integrated PPDFs in an adequate and a proper way.

scholarly journals Intrinsic charm parton distribution functions from CTEQ-TEA global analysis

2014 ◽  
Vol 89 (7) ◽  
Author(s):  
Sayipjamal Dulat ◽  
Tie-Jiun Hou ◽  
Jun Gao ◽  
Joey Huston ◽  
Jon Pumplin ◽  
...  
Keyword(s):  
Parton Distribution ◽  
Global Analysis ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Intrinsic Charm

scholarly journals CT14 intrinsic charm parton distribution functions from CTEQ-TEA global analysis

2018 ◽  
Vol 2018 (2) ◽  
Author(s):  
Tie-Jiun Hou ◽  
Sayipjamal Dulat ◽  
Jun Gao ◽  
Marco Guzzi ◽  
Joey Huston ◽  
...  
Keyword(s):  
Parton Distribution ◽  
Global Analysis ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Intrinsic Charm

scholarly journals Uncertainty of parton distribution functions due to physical observables in a global analysis

2017 ◽  
Vol 41 (2) ◽  
pp. 023101 ◽  
Author(s):  
Alireza Aleedaneshvar ◽  
Muhammad Goharipour ◽  
Saeedeh Rostami
Keyword(s):  
Parton Distribution ◽  
Global Analysis ◽  
Distribution Functions ◽  
Parton Distribution Functions

The impact of CMS inclusive jet data on parton distribution functions and their uncertainties

2017 ◽  
Vol 32 (22) ◽  
pp. 1750134
Author(s):  
A. Aleedaneshvar ◽  
A. Khorramian
Keyword(s):  
Parton Distribution ◽  
Parton Distribution Function ◽  
Global Analysis ◽  
Center Of Mass ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Jet Production ◽  
Inclusive Jet ◽  
Inclusive Jet Production ◽  
The Impact

It is well known that the jet production data at LHC provide important constraints on the medium and large-[Formula: see text] gluon parton distribution function (PDF), as well as on the large-[Formula: see text] sea quarks. In this work, we study the impact of recent CMS measurements for the inclusive jet production at center-of-mass energy of [Formula: see text][Formula: see text]=[Formula: see text]13 TeV on the PDFs and their uncertainties. To this aim, with use of the FastNLO and xFitter framework, we apply the parton distribution re-weighting procedure to study the impact of CMS data on two NLO modern CT14 and MMHT PDF sets. As a result, we found that the fit quality obtained using both of these PDF sets is very good. Moreover, the CMS data can impact both the central values and uncertainties of some PDFs especially at low and large [Formula: see text] regions. Overall, it is indicated that the CT14 PDFs compared with the MMHT ones are more affected. We emphasis that the inclusion of these data in a new global analysis of PDFs can improve the determination of the gluon and quark PDFs at both low and large [Formula: see text] regions.

scholarly journals New parton distribution functions from a global analysis of quantum chromodynamics

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
Sayipjamal Dulat ◽  
Tie-Jiun Hou ◽  
Jun Gao ◽  
Marco Guzzi ◽  
Joey Huston ◽  
...  
Keyword(s):  
Quantum Chromodynamics ◽  
Parton Distribution ◽  
Global Analysis ◽  
Distribution Functions ◽  
Parton Distribution Functions
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