Results 21 to 30 of about 22,575 (172)

A possible subthreshold pole in S 11 channel from πN Roy-Steiner equation analyses

open access: yesJournal of High Energy Physics, 2022
The hyperbolic version of Roy-Steiner equation describing low energy πN scatterings, with larger analyticity domain in the complex s plane is solved. The numerical results on phase shifts of low partial waves are in agreement with that of Hoferichter et ...
Xiong-Hui Cao, Qu-Zhi Li, Han-Qing Zheng
doaj   +1 more source

Phenomenology from the Lattice [PDF]

open access: yes, 2011
In recent years the precision of lattice calculations has improved hugely, and the results are making a very significant impact in particle physics phenomenology.
Sachrajda, Christopher
core   +1 more source

Quantum kinetic theory for spin transport of quarks with background chromo-electromagnetic fields

open access: yesJournal of High Energy Physics, 2022
We derive the quantum kinetic equations for massive and massless quarks coupled with the background chromo-electromagnetic fields from the Wigner-function approach with the n expansion and effective power-counting scheme.
Di-Lun Yang
doaj   +1 more source

Anisotropic flow and the valence quark skeleton of hadrons

open access: yesJournal of High Energy Physics, 2023
We study transverse momentum anisotropies, in particular, the elliptic flow v 2 due to the interference effect sourced by valence quarks in high-energy hadron-hadron collisions. Our main formula is derived as the high-energy (eikonal) limit of the impact-
Meijian Li   +3 more
doaj   +1 more source

Light-Front Holography and Hadronization at the Amplitude Level [PDF]

open access: yes, 2008
The correspondence between theories in anti-de Sitter space and conformal field theories in physical space-time leads to an analytic, semiclassical model for strongly-coupled QCD which has scale invariance at short distances and color confinement at ...
Claudio Ciofi degli Atti   +6 more
core   +3 more sources

Hadronic vacuum polarization and the MUonE proposal

open access: yesJournal of High Energy Physics, 2022
The MUonE proposal at the CERN SPS consists in extracting the value of the hadronic vacuum polarization self-energy function (HVP) from its contribution to the differential cross-section of elastic muon-electron scattering.
David Greynat, Eduardo de Rafael
doaj   +1 more source

Next-to-leading-power kinematic corrections to DVCS: a scalar target

open access: yesJournal of High Energy Physics, 2023
Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-t and target mass corrections to the ...
V. M. Braun, Yao Ji, A. N. Manashov
doaj   +1 more source

Experimental Status of Exotic Mesons and the GlueX Experiment [PDF]

open access: yes, 2006
One of the unanswered and most fundamental questions in physics regards the nature of the confinement mechanism of quarks and gluons in QCD. Exotic hybrid mesons manifest gluonic degrees of freedom and their spectroscopy will provide the data necessary ...
Daniel S Carman   +5 more
core   +2 more sources

The photon energy spectrum in B → X s γ at N3LL′

open access: yesJournal of High Energy Physics, 2023
We present predictions for the photon energy spectrum in inclusive B → X s γ decays mediated by the electromagnetic penguin operator O 7 to N3LL′. We use soft-collinear effective theory (SCET) to resum the singular contributions in the peak region at ...
Bahman Dehnadi   +2 more
doaj   +1 more source

Power Corrections from Small Distances [PDF]

open access: yes, 1999
We review recent speculations on power like corrections in QCD which go beyond the standard Operator Product Expansion. Both the theoretical picture underlying these corrections and phenomenological manifestations are discussed in some detail.Comment: 11
't Hooft   +39 more
core   +3 more sources

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