Results 71 to 80 of about 217,289 (236)
Electroweak matrix elements at large Nc: matching quarks to mesons [PDF]
, 2002 I review some progress made on the problem of calculating electroweak processes of mesons at low energy with the use of an approximation to large-Nc QCD which we call the Minimal Hadronic Approximation. An update of results for the matrix elements of the
Peris, S.
core +3 more sources
UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity
Fortschritte der Physik, Volume 68, Issue 10, October 2020., 2020 Abstract We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no‐scale supergravities in low‐energy 4D EFTs.
C. P. Burgess +4 more
wiley +1 more source
Pomerons and Lattices: a Progress Report [PDF]
, 1996 We report on some attempts to use lattice QCD to investigate topics in strong interactions phenomenology which are usually interpreted in terms of soft Pomeron exchange.Comment: Talk presented at LAT96, 3 pages, Latex, one style file and 2 PostScript ...
Breakstone +7 more
core +2 more sources
Pinning down the large-x gluon with NNLO top-quark pair differential distributions
Journal of High Energy Physics, 2017 Top-quark pair production at the LHC is directly sensitive to the gluon PDF at large x. While total cross-section data is already included in several PDF determinations, differential distributions are not, because the corresponding NNLO calculations have
Michał Czakon +4 more
doaj +1 more source
Holographic like models as a five-dimensional rewriting of large-Nc QCD [PDF]
, 1999 The AdS/QCD models are known to be tightly related with the QCD sum rules in the large-Nc (called also planar) limit. Rewriting the theory of infinite tower of free stable mesons expected in the large-Nc QCD as a five-dimensional theory we scrutinize to ...
Afonin, S. S.
core +6 more sources
High-Precision Lattice QCD Confronts Experiment [PDF]
, 2003 We argue that high-precision lattice QCD is now possible, for the first time, because of a new improved staggered quark discretization. We compare a wide variety of nonperturbative calculations in QCD with experiment, and find agreement to within ...
Aubin, C. +25 more
core +3 more sources
Power corrections for N-jettiness subtractions at O α s $$ \mathcal{O}\left({\alpha}_s\right) $$
Journal of High Energy Physics, 2018 We continue the study of power corrections for N -jettiness subtractions by analytically computing the complete next-to-leading power corrections at O α s $$ \mathcal{O}\left({\alpha}_s\right) $$ for colorsinglet production.
Markus A. Ebert +5 more
doaj +1 more source
J/ψ polarization in the CGC+NRQCD approach
Journal of High Energy Physics, 2018 We compute the J/ψ polarization observables λ θ , λ ϕ , λ θϕ in a Color Glass Condensate (CGC) + nonrelativistic QCQ (NRQCD) formalism that includes contributions from both color singlet and color octet intermediate states.
Yan-Qing Ma +2 more
doaj +1 more source
The pion in the graviton soft-wall model: phenomenological applications
European Physical Journal C: Particles and Fields, 2022 The holographic graviton soft-wall model, introduced to describe the spectrum of scalar and tensor glueballs, is improved to incorporate the realization of chiral-symmetry as in QCD.
Matteo Rinaldi +2 more
doaj +1 more source
QCD Phenomenology of Charm Production at HERA [PDF]
, 1997 We compare different schemes for the treatment of heavy quark production in Deep-Inelastic Scattering (DIS). For fully-integrated quantities such as $F_{2}(x,Q^{2})$, we advocate the use of the General-Massive Variable-Flavor-Number (GM-VFN) scheme; we ...
Schmidt, Carl R.
core +4 more sources