Results 51 to 60 of about 1,787,213 (363)

Geometrical Invariants of Matter Motion in Physics

open access: green, 2005
This paper defines the spacetime geometry attached with observor as vacuum geometry (it defines the idea physical measurement geometry) and the spacetime geometry attached with matter as spacetime geometry. The initial spacetime geometry attached with matter is taken as refference geometry (named as initial co-moving coordinator system), and the ...
Xiao Jianuha
openalex   +4 more sources

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

Higgs triplet extension of GRACE

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Much theoretical effort and automatization are required to confront new physics models with experimental data for many types of particle reactions at future colliders.
Yusaku Kouda   +3 more
doaj   +1 more source

Invariances in physics and group theory [PDF]

open access: yes, 2015
Talk given at the Conference "Lie and Klein; the Erlangen program and its impact on mathematics and physics", Strasbourg, Sept ...
openaire   +4 more sources

Search for new phenomena in multi-body invariant masses in events with at least one isolated lepton and two jets using s $$ \sqrt{s} $$ = 13 TeV proton–proton collision data collected by the ATLAS detector

open access: yesJournal of High Energy Physics, 2023
A search for resonances in events with at least one isolated lepton (e or μ) and two jets is performed using 139 fb −1 of s $$ \sqrt{s} $$ = 13 TeV proton–proton collision data recorded by the ATLAS detector at the LHC. Deviations from a smoothly falling
The ATLAS collaboration   +2935 more
doaj   +1 more source

Gauge Invariant Classes of Feynman Diagrams and Applications for Calculations [PDF]

open access: yes, 2001
In theories like SM or MSSM with a complex gauge group structure the complete set of Feynman diagrams contributed to a particular physics process can be splited to exact gauge invariant subsets. Arguments and examples given in the review demonstrate that
Boos, E. E.
core   +3 more sources

Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
We develop a tool for the analysis of stochastic gravitational wave backgrounds from cosmological first-order phase transitions with LISA: we initiate a template databank for these signals, prototype their searches, and forecast their reconstruction. The
C. Caprini   +8 more
semanticscholar   +1 more source

Rephasing invariance and permutation symmetry in flavor physics [PDF]

open access: yesThe European Physical Journal C, 2020
AbstractWith some modifications, the arguments for rephasing invariance can be used to establish permutation symmetry for the standard model. The laws of evolution of physical variables, which transform as tensors under permutation, are found to obey the symmetry, explicitly.
Kuo, T., Chiu, S.
openaire   +5 more sources

Higgs boson pair production at NNLO in QCD including dimension 6 operators

open access: yesJournal of High Energy Physics, 2017
In this paper we present the computation of the Higgs boson pair production cross section, both inclusive as well as differential on the invariant mass distribution, at next-to-next-to-leading order (NNLO) in QCD including effects of new physics beyond ...
Daniel de Florian   +2 more
doaj   +1 more source

New physics contributions to moments of inclusive b → c semileptonic decays

open access: yesJournal of High Energy Physics, 2023
Inclusive semileptonic B → X c ℓ ν ¯ ℓ $$ {X}_c\ell {\overline{\nu}}_{\ell } $$ decays, where ℓ = μ, e, are by now standard candles in the determination of the CKM element |V cb |. These determinations rely on the heavy-quark expansion and use moments of
Matteo Fael, Muslem Rahimi, K. Keri Vos
doaj   +1 more source

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