Results 101 to 110 of about 32,795 (203)

The Strong Coupling Constant from Hadron Structure Phenomenology

, 2012
We present recent developments on the role of the running coupling constant at the intersection of perturbative and nonperturbative QCD. A number of experiments show a smooth transition from small to large scales given by the four-momentum transfer in ...
Courtoy, A., Liuti, Simonetta
core   +1 more source

Dense and magnetized QCD from imaginary chemical potential [PDF]

Proceedings of The 41st International Symposium on Lattice Field Theory — PoS(LATTICE2024)
In this work, we computed the equation of state of dense QCD in the presence of background magnetic fields using lattice QCD simulations at imaginary baryon chemical potential.
S. Bors'anyi, B. Brandt, G. EndrHodi, J. Guenther, Marc-Andr'e Petri, A. Valois, L. Varnhorst   +6 more
semanticscholar   +1 more source

Λ c → N form factors from lattice QCD and phenomenology of Λ c → n ℓ + ν ℓ and Λ c → p μ + μ - decays

, 2018
National Science Foundation [PHY-1520996, ACI-1053575]; RHIC Physics Fellow Program of the RIKEN BNL Research Center; National Energy Research Scientific Computing Center, a DOE Office of Science User Facility; Office of Science of the U.S. Department of
S. Meinel
semanticscholar   +1 more source

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

Journal 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

The sigma meson from QCD sum rules for large-$N_c$ Regge spectra

, 2016
The QCD sum rules in the large-$N_c$ limit for the light non-strange vector, axial and scalar mesons are considered assuming a string-like linear spectrum for the radially excited states.
Afonin, S. S., Solomko, T. D.
core   +1 more source

All-gluon amplitudes with off-shell recursion in multiplet bases

Journal of High Energy Physics
The efficient computation of color-summed QCD amplitudes at high parton multiplicities remains a central challenge for precision collider predictions.
Oskar Bolinder, Rikkert Frederix, Malin Sjodahl   +2 more
doaj   +1 more source

The electromagnetic form factors of heavy-light pseudo-scalar and vector mesons

Journal of High Energy Physics
We systematically investigate the electromagnetic form factors of heavy-light pseudo-scalar and vector mesons within the Dyson-Schwinger/Bethe-Salpeter equations framework for the first time.
Yin-Zhen Xu
doaj   +1 more source

Accidental Composite Dark Matter

, 2015
We build models where Dark Matter candidates arise as composite states of a new confining gauge force, stable thanks to accidental symmetries. Restricting to renormalizable theories compatible with SU(5) unification, we find 13 models based on SU(N ...
Antipin, Oleg, Redi, Michele, Strumia, Alessandro, Vigiani, Elena   +3 more
core   +1 more source

Power corrections to the heavy electron form factor

Journal 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

Journal 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