Results 11 to 20 of about 1,097 (138)
The B ¯ $$ \overline{B} $$ → π form factors from QCD and their impact on |V ub | [PDF]
Journal of High Energy Physics, 2021 We revisit light-cone sum rules with pion distribution amplitudes to determine the full set of local B ¯ $$ \overline{B} $$ → π form factors. To this end, we determine all duality threshold parameters from a Bayesian fit for the first time.
Domagoj Leljak +2 more
doaj +2 more sources
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
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
Journal of High Energy Physics, 2022 The rare three-body decay of a Higgs boson to a lepton-antilepton pair and a photon is starting to become experimentally accessible at the LHC. We investigate how higher-order QCD corrections to the dominant gluon-fusion production process impact on the ...
X. Chen +3 more
doaj +1 more source
Journal of High Energy Physics, 2020 The inclusive cross sections of W+, W − , and Z boson production from 34 different measurements performed in proton-(anti)proton collisions at center-of-mass energies s $$ \sqrt{s} $$ = 1.8–13 TeV, are compared to perturbative QCD calculations at next-to-
David d’Enterria, Andres Poldaru
doaj +1 more source
Journal of High Energy Physics, 2020 We consider the double-soft limit of QCD amplitudes with two massive quarks in a back-to-back kinematics accompanied by two soft partons. We integrate analytically the respective double-soft eikonal functions over the phase space of the two soft partons.
Wojciech Bizoń, Maximilian Delto
doaj +1 more source
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
Single top production in PDF fits
Journal of High Energy Physics, 2020 We study the impact of recent LHC t-channel single top-quark and top-antiquark measurements at centre-of-mass energies of 7, 8 and 13 TeV on the parton distribution functions (PDFs) of the proton.
Emanuele R. Nocera +2 more
doaj +1 more source
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
Dynamical tachyonic AdS/QCD and information entropy
Physics Letters B, 2018 The configurational entropy setup is employed to study dynamical tachyonic holographic AdS/QCD models. The phenomenology of light-flavour mesonic states is then corroborated by the Shannon's information.
N. Barbosa-Cendejas +4 more
doaj +1 more source