scholarly journals Parton distribution functions and constraints on the intrinsic charm content of the proton using the Brodsky-Hoyer-Peterson-Saka approach

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
H. Abdolmaleki ◽  
A. Khorramian
Keyword(s):  
Parton Distribution ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Intrinsic Charm

scholarly journals Production of massless charm jets in pp collisions at next-to-leading order of QCD

2015 ◽  
Vol 30 (18n19) ◽  
pp. 1550111 ◽  
Author(s):  
Isabella Bierenbaum ◽  
Gustav Kramer
Keyword(s):  
Transverse Momentum ◽  
Parton Distribution ◽  
Distribution Functions ◽  
Inclusive Production ◽  
Leading Order ◽  
Parton Distribution Functions ◽  
Proton Proton ◽  
Proton Collisions ◽  
Intrinsic Charm ◽  
Proton Proton Collisions

We present predictions for the inclusive production of charm jets in proton–proton collisions at 7 TeV. Several CTEQ parton distribution functions (PDFs) of the CTEQ6.6M type are employed, where two of the CTEQ6.6 PDFs have intrinsic charm. At large enough jet transverse momentum and large jet rapidity, the intrinsic charm content can be tested.

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 CTEQ-TEA parton distribution functions with intrinsic charm

2018 ◽  
Vol 192 ◽  
pp. 00003
Author(s):  
Marco Guzzi ◽  
Tie-Jiun Hou ◽  
Sayipjamal Dulat ◽  
Jun Gao ◽  
Joey Huston ◽  
...  
Keyword(s):  
Parton Distribution ◽  
Parton Distribution Function ◽  
Hadron Collider ◽  
Distribution Functions ◽  
Leading Order ◽  
Parton Distribution Functions ◽  
Intrinsic Charm ◽  
Standard Candle ◽  
Potential Impact ◽  
Theoretical Issues

We present a study in which the possibility of a (sizable) nonperturbative contribution to the charm parton distribution function (PDF) in a nucleon is investigated together with theoretical issues arising in its interpretation. The separation of the universal component of the nonperturbative charm from the rest of the radiative contributions is also discussed. We illustrate the potential impact of a nonperturbative charm PDF on LHC scattering processes. An estimate of nonperturbative charm magnitude in the CT14 and CT14HERA2 global QCD analyses at the next-to-next-to leading order (NNLO) in the QCD coupling strength is given by including the latest experimental data from HERA and the Large Hadron Collider. We show a comparison between different models of intrinsic charm and illustrate prospects for standard candle observables at the LHC.

PARTON DISTRIBUTION FUNCTIONS AND THE QCD-IMPROVED PARTON MODEL — AN OVERVIEW

1987 ◽  
Vol 02 (04) ◽  
pp. 1369-1387 ◽  
Author(s):  
Wu-Ki Tung
Keyword(s):  
Parton Distribution ◽  
Particle Production ◽  
Heavy Particle ◽  
Parton Model ◽  
Distribution Functions ◽  
Collider Physics ◽  
Parton Distribution Functions ◽  
Parton Distributions ◽  
First Order ◽  
Small X

Some non-trivial features of the QCD-improved parton model relevant to applications on heavy particle production and semi-hard (small-x) processes of interest to collider physics are reviewed. The underlying ideas are illustrated by a simple example. Limitations of the naive parton formula as well as first order corrections and subtractions to it are dis-cussed in a quantitative way. The behavior of parton distribution functions at small x and for heavy quarks are discussed. Recent work on possible impact of unconventional small-x behavior of the parton distributions on small-x physics at SSC and Tevatron are summarized. The Drell-Yan process is found to be particularly sensitive to the small x dependence of parton distributions. Measurements of this process at the Tevatron can provide powerful constraints on the expected rates of semi-hard processes at the SSC.

scholarly journals PDFFlow: Parton distribution functions on GPU

2021 ◽  
Vol 264 ◽  
pp. 107995
Author(s):  
Stefano Carrazza ◽  
Juan M. Cruz-Martinez ◽  
Marco Rossi
Keyword(s):  
Parton Distribution ◽  
Distribution Functions ◽  
Parton Distribution Functions

scholarly journals Delineating the Polarized and Unpolarized Parton Structure of the Nucleon

2015 ◽  
Vol 37 ◽  
pp. 1560053
Author(s):  
Pedro Jimenez-Delgado
Keyword(s):  
Parton Distribution ◽  
Distribution Functions ◽  
Distribution Analysis ◽  
Coupling Constant ◽  
Parton Distribution Functions ◽  
Careful Treatment ◽  
Future Data ◽  
The Impact

Reports on our latest extractions of parton distribution functions of the nucleon are given. First an overview of the recent JR14 upgrade of our unpolarized PDFs, including NNLO determinations of the strong coupling constant and a discussion of the role of the input scale in parton distribution analysis. In the second part of the talk recent results on the determination of spin-dependent PDFs from the JAM collaboration are reported, including a careful treatment of hadronic and nuclear corrections, as well as reports on the impact of present and future data in our understanding of the spin of the nucleon.

scholarly journals ON THE $\bar{d}/\bar{u}$ ASYMMETRY AND PARTON DISTRIBUTIONS

2002 ◽  
Vol 17 (02) ◽  
pp. 269-278
Author(s):  
ALEJANDRO DALEO ◽  
CARLOS A. GARCIA CANAL ◽  
GABRIELA A. NAVARRO ◽  
RODOLFO SASSOT
Keyword(s):  
Parton Distribution ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Parton Distributions ◽  
The Impact

We discuss the impact of different measurements of the [Formula: see text] asymmetry in the extraction of parametrizations of parton distribution functions.

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