Results 1 to 10 of about 98,833 (179)
Mirror QCD and Cosmological Constant
Universe, 2017 An analog of Quantum Chromo Dynamics (QCD) sector known as mirror QCD (mQCD) can affect the cosmological evolution due to a non-trivial contribution to the Cosmological Constant analogous to that induced by the ground state in non-perturbative QCD.
Roman Pasechnik +2 more
doaj +4 more sources
RECENT DEVELOPMENTS IN PERTURBATIVE QCD [PDF]
Deep Inelastic Scattering DIS 2006, 2007 A brief overview of some recently active topics in perturbative QCD, including: string-inspired recursion techniques at tree level; recursion approaches and automation of standard techniques for 1-loop calculations; the status of NNLO jet calculations; and non-trivial structures that appear in higher-order calculations.
Salam, Gavin P.
openaire +6 more sources
Thoughts about the utility of perturbative QCD in the cores of neutron stars – contribution to a roundtable discussion on neutron stars and QCD [PDF]
EPJ Web of Conferences, 2022 In this contribution, I discuss the utility that perturbative QCD offers in studying the matter in the cores of neutron stars. I discuss the reasons why perturbative QCD can constrain the equation of state at densities far below the densities where we ...
Kurkela Aleksi
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Transverse momentum distributions in low-mass Drell-Yan lepton pair production at NNLO QCD
Physics Letters B, 2022 The production of lepton pairs at low invariant mass and finite transverse momentum resolves QCD dynamics at the boundary between the perturbative and non-perturbative domains.
R. Gauld +6 more
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Non-perturbative phenomena in jet modification [PDF]
EPJ Web of Conferences, 2022 The interaction of a jet with the medium created in heavy-ion collisions is not yet fully understood from a QCD perspective. This is mainly due to the non-perturbative nature of this interaction which affects both transverse jet momentum broadening and ...
Moore Guy D. +3 more
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QCD mesonic screening masses using Gribov quantization
Physics Letters B, 2023 The screening masses of mesons provide a gauge invariant and definite order parameter of chiral symmetry restoration. Different mesonic correlation lengths for flavor non-singlets, at least up to NLO, are well-defined gauge invariant physical quantities ...
Sumit +2 more
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Determination of $$\alpha _{S}$$ α S beyond NNLO using event shape averages
European Physical Journal C: Particles and Fields, 2021 We consider a method for determining the QCD strong coupling constant using fits of perturbative predictions for event shape averages to data collected at the LEP, PETRA, PEP and TRISTAN colliders.
Adam Kardos +2 more
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Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state
Journal of High Energy Physics, 2023 The equation of state of neutron-star cores can be constrained by requiring a consistent connection to the perturbative Quantum Chromodynamics (QCD) calculations at high densities.
Tyler Gorda +3 more
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Physics Letters B, 2021 We perform a study of W-boson production in polarized proton-proton collisions through next-to-next-to-leading order (NNLO) in perturbative QCD. This calculation is required to extend the extraction of polarized parton distribution functions to NNLO ...
Radja Boughezal +2 more
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Combining the small-x evolution and DGLAP for description of inclusive photon induced processes
European Physical Journal C: Particles and Fields, 2020 We study amplitudes of the inclusive photon induced high-energy processes: elastic Compton scattering off hadrons and photoproduction. Although description of these amplitudes includes both non-perturbative and perturbative contributions, QCD ...
B. I. Ermolaev, S. I. Troyan
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