Results 81 to 90 of about 7,425,422 (182)

Holographic description of the QCD phase diagram and out of equilibrium dynamics

open access: yes, 2014
Holography provides a powerful tool to model QCD and other strongly coupled gauge dynamics. As examples of its power to compute in novel environments I review some recent results: these include models of the phase structure of QCD at finite temperature ...
Kabana, Sonia   +3 more
core   +1 more source

A particle on a ring or: how I learned to stop worrying and love θ-vacua

open access: yesJournal of High Energy Physics
Recently, Ai, Cruz, Garbrecht, and Tamarit (ACGT) [1–3] claimed that the strong CP problem can be avoided by adopting a particular order of limits in the Euclidean path integral, in which the spacetime volume is taken to infinity before summing over all ...
Mohammad Aghaie, Ryosuke Sato
doaj   +1 more source

Introduction to QCD

open access: yes, 2012
These lectures were originally given at TASI and are directed at a level suitable for graduate students in High Energy Physics. They are intended to give an introduction to the theory and phenomenology of quantum chromodynamics (QCD), focusing on ...
P. Z. Skands, P. Skands, Skands, Peter
core   +1 more source

Using the Virasoro conditions to revise the model of a quark-gluon string fragmentation

open access: yesJournal of High Energy Physics
Quark-gluon string fragmentation is usually seen as a universal process with its physics remaining unchanged for different colliding systems and center-of-mass energy.
R. V. Nikolaenko
doaj   +1 more source

Power corrections to the heavy electron form factor

open access: yesJournal of High Energy Physics
We study the first power correction to the heavy electron form factor in QED and show that it factorizes as a derivative operator. We discuss the result in QED with no light fermions, where the first power correction can be written explicitly in terms of
Aniruddha Venkata
doaj   +1 more source

Mechanical properties of proton using flavor-decomposed gravitational form factors

open access: yesJournal of High Energy Physics
We investigate the mechanical properties of the proton by extracting its flavor-decomposed gravitational form factors (GFFs) using Light-Cone QCD sum rules (LCSR).
Zeinab Dehghan, F. Almaksusi, K. Azizi
doaj   +1 more source

Study of QCD-like theories at nonzero temperatures and densities [PDF]

open access: yes, 2012
In this thesis I use effective models to investigate the properties of QCD-like theories at nonzero temperature and baryon chemical potential. First I construct a PNJL model using a lattice spin model with nearestneighbor interactions for the gauge ...
Zhang, Tian (PhD.), Zhang, Tian
core  

Revising the mass of light hybrid mesons: NLO QCD sum rules point to ϕ(2170) as a prime candidate

open access: yesJournal of High Energy Physics
We present a comprehensive next-to-leading order (NLO) QCD sum rule analysis for light hybrid mesons with J PC = 1 −− , incorporating condensates up to dimension-8 and NLO corrections to the perturbative, gluon condensate, and four-quark condensate ...
Shuang-Hong Li   +3 more
doaj   +1 more source

Extracting a toponium signal at the LHC with spin and quantum information tools

open access: yesJournal of High Energy Physics
We investigate near-threshold top-antitop production at the LHC, focusing on the impact of toponium formation on spin correlations and quantum information properties of the final state.
Laura Antozzi   +8 more
doaj   +1 more source

Recent progress on QCD inputs for axion phenomenology [PDF]

open access: yes, 2017
The properties of the QCD axion are strictly related to the dependence of strong interactions on the topological parameter theta. We present a determination of the topological properties of QCD for temperatures up to around 600 MeV, obtained by lattice ...
Martinelli Guido   +31 more
core   +1 more source

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