Results 61 to 70 of about 32,795 (203)

Two Micron‐Size Dark Dimensions

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui   +2 more
wiley   +1 more source

Angular coefficients from interpretable machine learning with symbolic regression

open access: yesJournal of High Energy Physics
We explore the use of symbolic regression to derive compact analytical expressions for angular observables relevant to electroweak boson production at the Large Hadron Collider (LHC).
Josh Bendavid   +4 more
doaj   +1 more source

Reconstructing generalized parton distributions from the lattice off-forward Compton amplitude

open access: yesPhysical Review D
We present a determination of the structure functions of the off-forward Compton amplitude H1 and E1 from the Feynman-Hellmann method in lattice QCD. At leading twist, these structure functions give access to the generalized parton distributions (GPDs) H
A. Hannaford-Gunn   +8 more
semanticscholar   +1 more source

Maximum Mass Limit of Generalized MIT Compact Star: A Theoretical Study of Thin Shell Dynamics and Gravitational Lensing

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract In this study, the properties, equilibrium, and stability of compact objects within the framework of teleparallel gravity with the generalized MIT bag model are investigated. By incorporating the modified field equations, the influence of the generalized bag constant on the structure and physical characteristics of quark stars and neutron ...
Sayantan Ghosh   +2 more
wiley   +1 more source

Higher Twist in Electroproduction: Flavor Non-Singlet QCD Evolution

open access: yes, 2013
We present results for the one loop anomalous dimension matrix of flavor non-singlet twist-4 operators of lowest spin that contribute to the leading moment of the $F_2$ structure function in deep inelastic electron-nucleon scattering.
Glatzmaier, Michael J.   +2 more
core   +1 more source

Visible GeV ALP from TeV Vector‐Like Leptons

open access: yesFortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi   +2 more
wiley   +1 more source

On Drell-Yan production of scalar leptoquarks coupling to heavy-quark flavours

open access: yesJournal of High Energy Physics, 2022
Given the hints of lepton-flavour non-universality in semi-leptonic B decays, leptoquark (LQ) models with sizeable couplings to heavy-quark flavours are enjoying a renaissance.
Ulrich Haisch   +2 more
doaj   +1 more source

Gauge-invariant quark and gluon fields in QCD: dynamics, topology, and the Gribov ambiguity

open access: yes, 2001
We review the implementation, in a temporal-gauge formulation of QCD, of the non-Abelian Gauss's law and the construction of gauge-invariant gauge and matter fields.
Belloni   +19 more
core   +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

Measuring the Quantum State of Dark Matter

open access: yesAnnalen der Physik, Volume 536, Issue 1, January 2024.
It is demonstrated how the time series obtained from searches for ultralight bosonic dark matter, such as the axion, can be used to determine whether it is in a coherent or incoherent quantum state. Abstract It is shown how the time series obtained from searches for ultralight bosonic dark matter (DM), such as the axion, can be used to determine ...
David J. E. Marsh
wiley   +1 more source

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