Results 31 to 40 of about 510 (133)

Three-loop master integrals for the Higgs boson self-energy with internal top-quarks and W-bosons

Journal of High Energy Physics, 2022
We consider the full set of master integrals with internal top-and W-propagators contributing to the three-loop Higgs self-energy diagrams of order O $$ \mathcal{O} $$ (α 2 α s ).
Ekta Chaubey, Ina Hönemann, Stefan Weinzierl   +2 more
doaj   +1 more source

Two Micron‐Size Dark Dimensions

Fortschritte 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, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

Precision phenomenology at multi-TeV muon colliders

Journal of High Energy Physics
Future lepton colliders, such as those based on linear e + e − or circular μ + μ − accelerators, are expected to attain centre-of-mass energies in the multi-TeV range.
Stefano Frixione, Fabio Maltoni, Davide Pagani, Marco Zaro   +3 more
doaj   +1 more source

Master integrals for O $$ \mathcal{O} $$ (αα s ) corrections to H → ZZ *

Journal of High Energy Physics, 2022
We present analytic results for all the Feynman integrals relevant for O $$ \mathcal{O} $$ (αα s ) virtual corrections to H → ZZ * decay. We use the method of differential equations to solve the master integrals while keeping the full dependence on the ...
Ekta Chaubey, Mandeep Kaur, Ambresh Shivaji   +2 more
doaj   +1 more source

Simulation of a Three‐Nucleons System Transition on Quantum Circuits

Advanced Quantum Technologies, Volume 8, Issue 5, May 2025.
A general procedure is presented to calculate the transition probability for two nuclear states and a transition operator. The ground state is approximated through the variational quantum eigensolver and the first excited one using more sophisticated variational algorithms.
Luca Nigro, Carlo Barbieri, Enrico Prati
wiley   +1 more source

NLO EW and QCD corrections to polarised same-sign WW scattering at the LHC

Journal of High Energy Physics
We present the first calculation of same-sign WW scattering at the LHC in the fully leptonic decay channel including the modelling of polarisation for intermediate electroweak bosons and radiative corrections up to NLO EW+QCD accuracy.
Ansgar Denner, Christoph Haitz, Giovanni Pelliccioli   +2 more
doaj   +1 more source

Dark Dimension With (Little) Strings Attached

Fortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract A relation between dark energy and the scale of new physics in weakly coupled string theory is motivated. This mixing between infrared and ultraviolet physics leads to a unique corner for real‐world phenomenology: barring fine‐tunings, the authors are naturally led to the “dark dimension” scenario, a single mesoscopic extra dimension of micron
Ivano Basile, Dieter Lüst
wiley   +1 more source

Explainable AI-assisted optimization for Feynman integral reduction

Journal of High Energy Physics
We present a novel approach to optimizing the reduction of Feynman integrals using integration-by-parts identities. By developing a priority function through the FunSearch algorithm, which combines large language models and genetic algorithms, we achieve
Zhuo-Yang Song, Tong-Zhi Yang, Qing-Hong Cao, Ming-xing Luo, Hua Xing Zhu   +4 more
doaj   +1 more source

Visible GeV ALP from TeV Vector‐Like Leptons

Fortschritte 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, Marta Fuentes Zamoro, Luca Merlo   +2 more
wiley   +1 more source

Tri-boson and WH production in the W + W + jj channel: predictions at full NLO accuracy and beyond

Journal of High Energy Physics
In this work, we present the first full NLO predictions for the process pp → μ + ν μ e+ ν ejj at the LHC in a typical tri-boson phase space. The NLO corrections reach 50% at the level of the fiducial cross section and have a very different hierarchy with
Ansgar Denner, Mathieu Pellen, Marek Schönherr, Steffen Schumann   +3 more
doaj   +1 more source