Results 31 to 40 of about 219,826 (264)
Extending the application of the light-cone sum rules method to low momenta using QCD renormalization-group summation: Theory and phenomenology [PDF]
Physical Review D, 2021 We show that using renormalization-group summation to generate the QCD radiative corrections to the π − γ transition form factor, calculated with lightcone sum rules (LCSR), renders the strong coupling free of Landau singularities while preserving the ...
S. Mikhailov, A. Pimikov, N. Stefanis
semanticscholar +1 more source
Phenomenology of the companion-axion model: photon couplings
European Physical Journal C: Particles and Fields, 2022 We study the phenomenology of the ‘companion-axion model’ consisting of two coupled QCD axions. The second axion is required to rescue the Peccei–Quinn solution to the strong-CP problem from the effects of colored gravitational instantons. We investigate
Zhe Chen +4 more
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Inclusive production of heavy quarkonia in pNRQCD
Journal of High Energy Physics, 2021 We develop a formalism for computing inclusive production cross sections of heavy quarkonia based on the nonrelativistic QCD and the potential nonrelativistic QCD effective field theories.
Nora Brambilla +2 more
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Pentagon integrals to arbitrary order in the dimensional regulator
Journal of High Energy Physics, 2021 We analytically calculate one-loop five-point Master Integrals, pentagon integrals, with up to one off-shell leg to arbitrary order in the dimensional regulator in d = 4−2𝜖 space-time dimensions.
Nikolaos Syrrakos
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The Low‐Scale Seesaw Solution to the MW$M_W$ and (g−2)μ$(g-2)_\umu$ Anomalies
Fortschritte der Physik, Volume 71, Issue 4-5, May 2023., 2023 Abstract The recent CDF‐II measurement of the W‐boson mass shows a strong tension with the corresponding Standard Model prediction. Once active neutrino masses are explained in the context of the Low‐Scale Seesaw mechanisms, this tension can be resolved.
Arturo de Giorgi +2 more
wiley +1 more source
Tree-level splitting amplitudes for a gluon into four collinear partons
Journal of High Energy Physics, 2020 We compute in conventional dimensional regularisation the tree-level splitting amplitudes for a gluon parent which splits into four collinear partons. This is part of the universal infrared behaviour of the QCD scattering amplitudes at next-to-next-to ...
Vittorio Del Duca +4 more
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Global analysis of the Sivers functions at NLO+NNLL in QCD
Journal of High Energy Physics, 2021 We perform global fit to the quark Sivers function within the transverse momentum dependent (TMD) factorization formalism in QCD. We simultaneously fit Sivers asymmetry data from Semi-Inclusive Deep Inelastic Scattering (SIDIS) at COMPASS, HERMES, and ...
Miguel G. Echevarria +2 more
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Probing HNL‐ALP Couplings at Colliders
Fortschritte der Physik, Volume 71, Issue 4-5, May 2023., 2023 Abstract Axion‐like particles (ALPs) and heavy neutral leptons (HNLs) are both well‐motivated extensions of the Standard Model. As ALPs couple to on‐shell fermions proportionally to their masses, processes involving both types of particles may give rise, for TeV HNLs, to relevant phenomenology at colliders.
Arturo de Giorgi +2 more
wiley +1 more source
Framing energetic top-quark pair production at the LHC
Journal of High Energy Physics, 2021 Top-quark pair production is central to many facets of LHC physics. At leading order, the top and anti-top are produced in a back-to-back topology, however this topology accounts only for a minority of the events with TeV-scale momentum transfer that ...
Fabrizio Caola +3 more
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Holographic light-front QCD in B meson phenomenology [PDF]
, 2020 The light-front wavefunction for mesons predicted by holographic light-front QCD is used to obtain the light-cone distribution amplitudes for the light vector mesons and the transition form factors for B and $B_s$ decays to $\rho$, $K^*$ and $\phi ...
M. Ahmady
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