Resonant π^{+}γ→π^{+}π^{0} Amplitude from Quantum Chromodynamics. [PDF]
Physical Review Letters, 2015 We present the first ab initio calculation of a radiative transition of a hadronic resonance within quantum chromodynamics (QCD). We compute the amplitude for ππ→πγ^{⋆}, as a function of the energy of the ππ pair and the virtuality of the photon, in the ...
R. Briceño +5 more
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The (alpha_s)^3 approximation of Quantum Chromodynamics to the Ellis-Jaffe sum rule [PDF]
Phys.Lett. B404 (1997) 153-160, 1997 We present the analytical calculation in perturbative Quantum Chromodynamics of the (alpha_s)^3 contribution to the Ellis-Jaffe sum rule for the structure function g1 of polarized deep inelastic lepton-nucleon scattering.
arxiv +1 more source
Diamagnetic and paramagnetic phases in low-energy quantum chromodynamics
Physics Letters B, 2021 While it is known that the QCD vacuum in a magnetic background exhibits both diamagnetic and paramagnetic characteristics in the low-energy domain, a systematic investigation of the corresponding phases emerging in the pion-dominated regime is still ...
Christoph P. Hofmann
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Chiral Relaxation Time at the Crossover of Quantum Chromodynamics [PDF]
, 2016 We study microscopic processes responsible for chirality flips in the thermal bath of quantum chromodynamics at finite temperature and zero baryon chemical potential.
M. Ruggieri +3 more
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Investigation of the internal structure of the deuteron against the background of two-photon exchange effects in elastic electron-deuteron scattering [PDF]
Âderna Fìzika ta EnergetikaThis work aims to investigate the simultaneous influence of two-photon effects in quantum electrodynamics and logarithmic corrections in quantum chromodynamics on certain observable experimental quantities (structure functions A(Q2) and B(Q2) in elastic ...
Ya. D. Krivenko-Emetov, O. S. Shevchuk
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16th International Conference in Quantum ChromoDynamics: Charmonium-like states at BaBar [PDF]
, 2013 We present new results on charmonium-like states from the BaBar experiment located at the PEP-II asymmetric energy $e^+e^-$ collider at the SLAC National Accelerator Laboratory.
arxiv +1 more source
Octonion Quantum Chromodynamics
, 2012 Starting with the usual definitions of octonions, an attempt has been made to establish the relations between octonion basis elements and Gell-Mann \lambda matrices of SU(3)symmetry on comparing the multiplication tables for Gell-Mann \lambda matrices of
A. Cayley +32 more
core +1 more source
Random Matrix Theory and Quantum Chromodynamics [PDF]
, 2016 These notes are based on the lectures delivered at the Les Houches Summer School in July 2015. They are addressed at a mixed audience of physicists and mathematicians with some basic working knowledge of random matrix theory. The first part is devoted to
G. Akemann
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Some Recent Developments in Perturbative Quantum Chromodynamics [PDF]
Nucl.Phys.Proc.Suppl.108:49-58,2002, 2002 This talk reviews some recent trends in perturbative quantum chromodynamics, with emphasis on higher orders in perturbation theory, resummation and power corrections.
arxiv +1 more source
Discoveries in ultra-peripheral collisions: Past, present, future [PDF]
EPJ Web of ConferencesUltra-relativistic heavy-ion collisions produce extremely strong electromagnetic field which provide a uniquely intense and energetic source of photons. The photons manifest from such ultra-Lorentz contracted electromagnetic fields have, in recent years,
Brandenburg James Daniel
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