Results 11 to 20 of about 4,122 (216)
The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post-War Period. [PDF]
Abstract 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
Heavy-quark effects on cold quark matter and self-bound stars [PDF]
The heavy-quark effects on the equation of state for cold and dense quark matter are obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale.
Jiménez José C., Fraga Eduardo S.
doaj +1 more source
Soft integrals and soft anomalous dimensions at N3LO and beyond
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
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The Odderon in QCD with running coupling
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
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Energy Loss in Perturbative QCD [PDF]
▪ 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
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
Precise QCD description of the Higgs boson transverse momentum spectrum
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
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Perturbative gravity from QCD amplitudes [PDF]
12 pages, LaTeX, references ...
Bern, Z., Grant, A. K.
openaire +2 more sources
Nuclear properties from perturbative QCD [PDF]
Abstract Two apparently different descriptions of quark distributions in a nucleus may in fact be connected. A “duality” between the QCD approach and the conventional model of nucleon binding leads to nuclear properties being simply related to the anomalous dimensions of QCD.
Close, F, Roberts, R, Ross, G
openaire +2 more sources
Vacuum correlators at short distances from lattice QCD
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

