Results 91 to 100 of about 219,826 (264)

Tree-level splitting amplitudes for a quark into four collinear partons

open access: yesJournal of High Energy Physics, 2020
We compute in conventional dimensional regularisation the tree-level splitting amplitudes for a quark parent in the limit where four partons become collinear to each other. This is part of the universal infrared behaviour of the QCD scattering amplitudes
Vittorio Del Duca   +4 more
doaj   +1 more source

QCD at non-zero density and phenomenology

open access: yesProceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018), 2019
In the last few years, numerical simulations of QCD on the lattice have reached a new level of accuracy. A wide range of thermodynamic observables is now available in the continuum limit and for physical quark masses.
C. Ratti
semanticscholar   +1 more source

New QCD Sum Rules for Nucleons in Nuclear Matter [PDF]

open access: yes, 1995
Two new QCD sum rules for nucleons in nuclear matter are obtained from a mixed correlator of spin-1/2 and spin-3/2 interpolating fields. These new sum rules, which are insensitive to the poorly known four-quark condensates, provide additional information
Celenza   +30 more
core   +2 more sources

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

Intrinsic charm in the nucleon and charm production at large rapidities in collinear, hybrid and k T -factorization approaches

open access: yesJournal of High Energy Physics, 2020
We discuss the role of intrinsic charm (IC) in the nucleon for forward production of c-quark (or c ¯ $$ \overline{c} $$ -antiquark) in proton-proton collisions for low and high energies.
Rafał Maciuła, Antoni Szczurek
doaj   +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

From Sakata Model to Goldberg-Ne'eman Quarks and Nambu QCD Phenomenology and "Right" and "Wrong" Experiments(The Jubilee of the Sakata Model) [PDF]

open access: yes, 2007
The basic theoretical milestones were the Sakata SU(3) symmetry, the GoldbergNe’eman composite model with SU(3) triplets having baryon number (1/3) and the Nambu color gauge Lagrangian.
H. Lipkin
semanticscholar   +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

Joint two-dimensional resummation in q T and 0-jettiness at NNLL

open access: yesJournal of High Energy Physics, 2019
We consider Drell-Yan production pp → Z/γ ∗ → ℓ + ℓ − with the simultaneous measurement of the Z-boson transverse momentum q T and 0-jettiness T 0 $$ {\mathcal{T}}_0 $$ .
Gillian Lustermans   +3 more
doaj   +1 more source

Fiducial cross sections for the lepton-pair-plus-photon decay mode in Higgs production up to NNLO QCD

open access: yesJournal 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

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