Results 51 to 60 of about 2,798 (204)
Electron and photon structure functions at two loops
Journal of High Energy PhysicsWe present a fully analytic computation of the complete electron and photon structure functions, or QED lepton parton distribution functions (PDFs) up to two-loop order.
Marvin Schnubel, Robert Szafron
doaj +1 more source
PROBING HIGH-ENERGY PHYSICS WITH HIGH-PRECISION QED MEASUREMENTS [PDF]
HEP-MAD '01, 2002 I summarize our self-contained determinations of the lowest order hadronic contributions to the anomalous magnetic moments a_{μ,τ} of the muon and tau leptons, the running QED coupling α(M_Z) and the muonium hyperfine splitting ν. Using as a revised estimate of the light-by light scattering: a_μ(LL)=85(18) 10^{-11}, we deduce: a_μ^{SM} = 116 591 861(78)
openaire +2 more sources
Volumetric analysis of root coverage with porcine acellular dermal matrix: Case study
Clinical Advances in Periodontics, EarlyView.Abstract Background Gingival recession is prevalent and often treated with coronally advanced flap plus connective tissue graft (CAF+CTG). Porcine acellular dermal matrix (PADM) offers a donor‐site‐free alternative. Contemporary digital imaging allows minimally invasive, three‐dimensional (3D) soft‐tissue assessment. This case report quantified 3D soft‐
Edgar Daniel Vargas‐Quiroga +4 more
wiley +1 more source
On the QED radiator at order alpha^3 [PDF]
, 1997 Calculation of the O(alpha^3) leading logarithmic corrections to the QED radiator function.
Nicrosini Oreste +2 more
core +1 more source
Entanglement and Bell nonlocality in τ + τ − at the BEPC
Journal of High Energy PhysicsQuantum entanglement and Bell nonlocality are two phenomena that occur only in quantum systems. In both cases, these are correlations between two subsystems that are classically absent.
Tao Han, Matthew Low, Youle Su
doaj +1 more source
Performance change detection and recovery in inferential control loops
The Canadian Journal of Chemical Engineering, EarlyView.Abstract In most industrial environments, soft sensors are crucial for estimating variables that are hard to measure. It is critical that these variables be estimated quickly and accurately because they are closely linked to plant safety and profit. Therefore, performance drift in the soft sensors cannot be ignored.
Xuanhui Zhai, Yuri A. W. Shardt
wiley +1 more source
Laser-assisted Light-by-light scattering in Born-Infeld and axion-like particle theories
Journal of High Energy PhysicsThe precision measurements of well-known light-by-light reactions lead to important insights of nonlinear quantum electrodynamics (QED) vacuum polarization.
Kai Ma, Tong Li
doaj +1 more source
Contributions to Plasma Physics, EarlyView.ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke +3 more
wiley +1 more source
Threshold corrections in QED x QCD at the LHC [PDF]
, 2004 In some processes at the LHC, theoretical precisions of 1 percent are desired. With an eye toward such precisions, we introduce the theory of the simultaneous YFS resummation of QED and QCD to compute the size of the expected resummed soft radiative ...
Jadach, S. +7 more
core +1 more source
Few‐Photon Fluorescence From Ultracold Bosons in an Optical Cavity
Contributions to Plasma Physics, EarlyView.ABSTRACT Within a cavity quantum electrodynamics framework, we analyse the fluorescent spectrum of ultracold bosons in resonant and second‐harmonic generation (SHG) regimes. Two settings are considered: (i) (few) bosons in an optical lattice and (ii) a trapped two‐component dilute Bose–Einstein condensate (2BEC) within the Bogoliubov scheme.
Megha Gopalakrishna +2 more
wiley +1 more source