Results 31 to 40 of about 194,290 (301)

Elastic parton-parton scattering from AdS/CFT [PDF]

open access: yesPhysics Letters B, 1999
Using the AdS/CFT correspondence and the eikonal approximation, we evaluate the elastic parton-parton scattering amplitude at large $N$ and strong coupling $g^2N$ in N=4 SYM. We obtain a scattering amplitude with a Regge behavior that unitarizes at large $\sqrt{s}$.
Rho, Mannque   +2 more
openaire   +2 more sources

Parton distributions for the LHC run II [PDF]

open access: yes, 2014
A bstractWe present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II deep-inelastic inclusive cross-sections, the combined HERA ...
R. Ball   +11 more
semanticscholar   +1 more source

Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2022
A measurement of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momenta of jets within |η| < 4.7 are required to exceed 35, 30, 25, and 20 GeV for the first-, second-, third ...
The CMS collaboration   +2347 more
doaj   +1 more source

Parton distributions in the LHC era: MMHT 2014 PDFs [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2014
We present LO, NLO and NNLO sets of parton distribution functions (PDFs) of the proton determined from global analyses of the available hard scattering data.
L. Harland–Lang   +3 more
semanticscholar   +1 more source

New parton distribution functions from a global analysis of quantum chromodynamics [PDF]

open access: yes, 2015
Here, we present new parton distribution functions (PDFs) up to next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics.
S. Dulat   +10 more
semanticscholar   +1 more source

LHAPDF6: parton density access in the LHC precision era [PDF]

open access: yesThe European Physical Journal C, 2014
The Fortran LHAPDF library has been a long-term workhorse in particle physics, providing standardised access to parton density functions for experimental and phenomenological purposes alike, following on from the venerable PDFLIB package. During Run 1 of
Andy Buckley   +7 more
semanticscholar   +1 more source

The x-dependence of hadronic parton distributions: A review on the progress of lattice QCD [PDF]

open access: yesEuropean Physical Journal A, 2020
In this article, we review recent lattice calculations on the x-dependence of parton distributions, with the latter providing information on hadron structure.
M. Constantinou
semanticscholar   +1 more source

Two-loop splitting in double parton distributions: the colour non-singlet case

open access: yesJournal of High Energy Physics, 2021
At small inter-parton distances, double parton distributions receive their dominant contribution from the splitting of a single parton. We compute this mechanism at next-to-leading order in perturbation theory for all colour configurations of the ...
M. Diehl, J. R. Gaunt, P. Plößl
doaj   +1 more source

Production of three isolated photons in the high-energy factorization approach

open access: yesSciPost Physics Proceedings, 2022
We study large-$p_T$ three-photon production at the LHC at the center-of-mass energy $\sqrt{s}=8$ TeV. We use the LO approximation of the parton Reggeization approach consistently merged with the real NLO corrections.
Vladimir Saleev
doaj   +1 more source

EPPS16: nuclear parton distributions with LHC data [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2016
We introduce a global analysis of collinearly factorized nuclear parton distribution functions (PDFs) including, for the first time, data constraints from LHC proton–lead collisions.
K. Eskola   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy