The Standard Model is a paradigm of a quantum field theory for theorists, exhibiting a wide range of phenomena, including spontaneous symmetry breaking, anomalies, and non-perturbative behavior.

So although the Standard Model accurately describes the phenomena within its domain, it is still incomplete. Perhaps it is only a part of a bigger picture that includes new physics hidden deep in the subatomic world or in the dark recesses of the universe. New information from experiments at the LHC will help us to find more of these missing ...

2021年4月1日 · The program minimal-lagrangians is able to generate the most general renormalizable Lagrangian describing certain classes of extensions of the Standard Model (SM) of particle physics in a fully automatic fashion, with several different output formats, requiring only the model’s field content to do so.

3 天之前 · We explore the generation of the dark matter abundance within the context of the freeze-in scenario of the Λ ⁢ CDM Λ CDM \mathrm{\Lambda CDM} roman_Λ roman_CDM cosmological standard model. This requires an appropriate determination of the interaction strengths between Ω μ subscript 𝛺 𝜇 \mathit{\Omega}_{\mu} italic_Ω start ...

We find that the nonperturbative physics of the standard-model Higgs Lagrangian provides a dark matter candidate, “dormant skyrmion in the standard model”, the same type of the skyrmion, a soliton, as in the hadron physics. It is stabilized by …

It starts with the minimal extension of the Standard Model to accommodate a dark matter candidate, and further discusses various other extensions of the particle content of the Standard Model. The main focus is to constrain the model parameters from …

What is the Standard Model (SM) of Particle Physics? •SM is the theory describing electromagnetic, weak & strong interactions •~40 years old, spectacularly confirmed (except Higgs) •beyond the SM: neutrino masses, theoretical puzzles •whatever LHC finds, SM is valid as an effective theory for E < TeV •SM is a gauge theory based on

The Standard Model of particle physics The Standard Model Lagrangian is determined by symmetries I space-time symmetry: global Poincar e-symmetry I internal symmetries: local SU(n) gauge symmetries L SM = 1 4 Fa F a + i D= gauge sector +jD Hj2 V(H) EWSB sector i ij jH + h:c: avour sector...including only the operators of lowest dimension

First, the Standard Model Lagrangian is extended to include classical gravity. Next, a gauge singlet real scalar Klein-Gordon field with Z2 parity is added for dark matter. Dark energy is described by the cosmological constant Λ.

Download scientific diagram | Standard Model Lagrangian from publication: On the fine structure of spacetime | General Relativity describes spacetime as far as large scales are...