Results 11 to 20 of about 2,102 (188)
The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post-War Period. [PDF]
Ber WissAbstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Martinez JP.
europepmc +2 more sources
Soft integrals and soft anomalous dimensions at N3LO and beyond
Journal of High Energy Physics, 2022 We calculate soft phase-space and loop master integrals for the computation of color-singlet cross sections through N3LO in perturbative QCD. Our results are functions of homogeneous transcendental weight and include the first nine terms in the expansion
Claude Duhr +2 more
doaj +1 more source
Energy Loss in Perturbative QCD [PDF]
Annual Review of Nuclear and Particle Science, 2000 ▪ Abstract We review the propagation of energetic partons in hot or cold QCD matter, as known from recent work. We summarize advances in the understanding of both collisional and radiative energy loss. Our emphasis is on radiative energy loss, which has very interesting properties that may help to detect the quark-gluon plasma produced in heavy-ion ...
Baier, Rudolf, Schiff, D, Zakharov, BG
openaire +3 more sources
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 +1 more source
The Odderon in QCD with running coupling
Journal of High Energy Physics, 2020 Starting from the leading Odderon solution of the three gluon system in perturbative QCD we introduce, as a first step towards the transition to the non-perturbative region, an infrared cutoff and use the running QCD coupling constant.
Jochen Bartels +2 more
doaj +1 more source
On-shell methods in perturbative QCD [PDF]
Annals of Physics, 2007 49 pages, 15 figures.
Bern, Zvi +2 more
openaire +4 more sources
Precise QCD description of the Higgs boson transverse momentum spectrum
Physics Letters B, 2019 The transverse momentum (pT) distribution of Higgs bosons at hadron colliders enables a detailed probe of its production dynamics and is a key ingredient to precision studies of Higgs boson properties, but receives very large QCD corrections. We obtain a
Xuan Chen +8 more
doaj +1 more source
Experimental Tests Of Perturbative QCD [PDF]
Annual Review of Nuclear and Particle Science, 1989 The main experimental results to test quantum chromodynamics are reviewed. A wide variety of observables related to hard processes are correctly predicted by the theory, thus it is fair to say that the experimental support of QCD is quite solid and quantitative.(AIP)
openaire +2 more sources
AN ANALYTIC APPROACH TO PERTURBATIVE QCD [PDF]
International Journal of Modern Physics A, 2000 The two-loop invariant (running) coupling of QCD is written in terms of the Lambert W function. The analyticity structure of the coupling in the complex Q2-plane is established. The corresponding analytic coupling is reconstructed via a dispersion relation.
openaire +3 more sources
Vacuum correlators at short distances from lattice QCD
Journal of High Energy Physics, 2021 Non-perturbatively computing the hadronic vacuum polarization at large photon virtualities and making contact with perturbation theory enables a precision determination of the electromagnetic coupling at the Z pole, which enters global electroweak fits ...
Marco Cè +4 more
doaj +1 more source