Results 41 to 50 of about 115,526 (231)
Soft-drop grooming for hadronic event shapes
Soft-drop grooming of hadron-collision final states has the potential to significantly reduce the impact of non-perturbative corrections, and in particular the underlying-event contribution.
Jeremy Baron +4 more
doaj +1 more source
Recent measurements of proton structure, jet production cross sections, the strong coupling constant value, prompt photon production cross sections, charmed hadron production cross sections and the charm and beauty quark mass values, performed by the H1 and ZEUS collaborations at the e±p collider HERA, are presented.
openaire +3 more sources
ON PERTURBATIVE QCD OF HARD AND SOFT PROCESSES [PDF]
We discuss some problems concerning the application of perturbative QCD to high energy processes. In particular for hard processes, we analyze higher order and higher twist corrections. It is argued that these effects are of great importance for understanding the behaviour of pion electromagnetic form factor at moderately large momentum transfers. For
Efremov, A. V., Radyushkin, A. V.
openaire +3 more sources
The two-loop perturbative correction to the (g − 2) μ HLbL at short distances
The short-distance behaviour of the hadronic light-by-light (HLbL) contribution to (g − 2) μ has recently been studied by means of an operator product expansion in a background electromagnetic field.
Johan Bijnens +3 more
doaj +1 more source
Generalized Beth–Uhlenbeck Entropy Formula From the Φ‐Derivable Approach
ABSTRACT We derive a generalized Beth–Uhlenbeck formula for the entropy of a dense fermion system with strong two‐particle correlations, including scattering states and bound states. We work within the Φ‐derivable approach to the thermodynamic potential.
David Blaschke, Gerd Röpke, Gordon Baym
wiley +1 more source
RECENT DEVELOPMENTS IN PERTURBATIVE QCD [PDF]
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.
openaire +3 more sources
Connecting the hadron mass scale to the fundamental mass scale of quantum chromodynamics
Establishing an explicit connection between the long distance physics of confinement and the dynamical interactions of quarks and gluons at short distances has been a long-sought goal of quantum chromodynamics.
A. Deur, S.J. Brodsky, G.F. de Teramond
doaj +1 more source
Master integrals for two-loop QCD corrections to quark quasi PDFs
We compute the master integrals for the two-loop QCD corrections to quark quasi parton distribution functions (PDFs) in the large momentum effective theory (LaMET). With a proper canonical basis, we derive the analytical results for the three families of
Long-Bin Chen, Wei Wang, Ruilin Zhu
doaj +1 more source
The Gamma Factory: A New Experimental Paradigm for the Post‐HL‐LHC Era
ABSTRACT The Gamma Factory (GF) proposal is motivated by the recognition of a largely untapped potential of the CERN accelerator complex to enable a new research program at the intersection of particle, nuclear, atomic, fundamental, and applied physics. These fields could benefit from novel experimental tools made possible by a future GF facility.
Mieczyslaw Witold Krasny
wiley +1 more source
Infrared behaviour and renormalization scheme invariance of QCD observables [PDF]
In this thesis we study the infrared (IR) behaviour of QCD observables, and solutions to the problem of renormalization scheme dependence. We investigate the IR behaviour of all-orders leading-b renormalon resummations for certain Euclidean observables ...
Brooks, Paul M, Brooks, Paul M.
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