Results 31 to 40 of about 11,143 (214)

How to measure the linear polarization of gluons in unpolarized proton using the heavy-quark pair leptoproduction

open access: yesPhysics Letters B, 2018
We study the azimuthal cos⁡φ and cos⁡2φ asymmetries in heavy-quark pair leptoproduction, lN→l′QQ¯X, as probes of linearly polarized gluons inside unpolarized proton, where the azimuth φ is the angle between the lepton scattering plane (l,l′) and the ...
A.V. Efremov, N.Ya. Ivanov, O.V. Teryaev
doaj   +1 more source

The dimensionally reduced description of the high energy scattering and the effective action for the reggeized gluons

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We discuss the high energy scattering of hadrons with the multi-Regge kinematics. The effective 2D model for the interaction between the produced hard gluons appears as a result of the dimensional reduction, which is similar to the dimensional reduction $
S. Bondarenko, M. A. Zubkov
doaj   +1 more source

Quark propagation in a quark–gluon plasma with gluon condensate [PDF]

open access: yesPhysics Letters B, 1999
We present a calculation of the thermal quark propagator taking the gluon condensate above the critical temperature into account. The quark dispersion relation following from this propagator, describing two massive modes, is discussed.
Schaefer, Andreas, Thoma, Markus H.
openaire   +2 more sources

One-loop light-cone QCD, effective action for reggeized gluons and QCD RFT calculus

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
The effective action for reggeized gluons is based on the gluodynamic Yang–Mills Lagrangian with external current for longitudinal gluons added, see Lipatov (Nucl Phys B 452:369, 1995; Phys Rep 286:131, 1997; Subnucl Ser 49:131, 2013; Int J Mod Phys Conf
S. Bondarenko   +3 more
doaj   +1 more source

A New Method for Calculating the Energies Associated with Particle Reactions

open access: yesReports in Advances of Physical Sciences
A new method in which the energy and mass of elementary particles can be calculated is presented. Gluon-gluon interactions within a single elementary particle are considered, and the number of possible interactions per particle is determined.
Borros Arneth
doaj   +1 more source

Wigner distributions for gluons

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We investigate the gluon Wigner distributions for unpolarized, longitudinally polarized and transversely polarized target state. Instead of a nucleon, we take the target state to be a quark dressed with a gluon at one loop and investigate the gluon ...
Jai More, Asmita Mukherjee, Sreeraj Nair
doaj   +1 more source

Three-Loop Gluon Scattering in QCD and the Gluon Regge Trajectory

open access: yesPhysical Review Letters, 2022
We compute the three-loop helicity amplitudes for the scattering of four gluons in QCD. We employ projectors in the 't Hooft-Veltman scheme and construct the amplitudes from a minimal set of physical building blocks, which allows us to keep the computational complexity under control.
Caola, Fabrizio   +4 more
openaire   +3 more sources

Jets, Gluons, QCD

open access: yes, 1980
1. The evidence from e+ e− collisions for QCD's gluons is considered. The criterion for a convincing experimental test is that plausible alternative scenarios fail to describe data.2.
T. F. Walsh, Walsh, T. F.
core   +1 more source

Deep-learning quasi-particle masses from QCD equation of state

open access: yesPhysics Letters B, 2023
The interactions of quarks and gluons are strong in the non-perturbative regime. The equation of state (EoS) of a strongly-interacting quantum chromodynamics (QCD) medium can only be studied using the first-principle lattice QCD calculations.
Fu-Peng Li   +3 more
doaj   +1 more source

Gluon-gluon fusion at HERA

open access: yesPhysics Letters B, 1991
Abstract We calculate corrections to the electroproduction cross section of J/ψ at HERA energies arising from gluons in the photon interacting with gluons in the proton. These turn out to be sizable and may be isolated by suitable phase space cuts. Implications for the extraction of the gluon density of the proton at HERA are also discussed.
openaire   +1 more source

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