Effective field theory analysis of dark matter-standard model interactions with spin one mediators
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DOI: 10.1007/jhep02(2021)223
Abstract: We analyze interactions between dark matter and standard model particles with spin one mediators in an effective field theory framework. In this paper, we are considering dark particles masses in the range from a few… read more here.
Keywords: matter standard; dark matter; one mediators; standard model ... See more keywords
High-energy cLFV at μTRISTAN: HNL extensions of the Standard Model
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DOI: 10.1007/jhep02(2025)116
Abstract: Within the context of heavy neutral lepton (HNL) extensions of the Standard Model, we compute the cross-sections for μ+e−→ℓα+ℓβ−\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\mu}^{+}{e}^{-}\to {\ell}_{\alpha}^{+}{\ell}_{\beta}^{-} $$\end{document} scattering, as well as… read more here.
Keywords: high energy; energy; hnl; standard model ... See more keywords
Resonant production of Wh and Zh at the LHC
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DOI: 10.1007/jhep03(2018)159
Abstract: A bstractWe examine the production of Wh and Zh pairs at the LHC in the context of a Strongly Interacting Symmetry Breaking Sector of the Standard Model. Our description is based on a non-linear Higgs… read more here.
Keywords: production lhc; production; resonant production; standard model ... See more keywords
Constraints on standard model effective field theory for a Higgs boson produced in association with W or Z bosons in the H → $$ \textrm{b}\overline{\textrm{b}} $$ decay channel in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2025)114
Abstract: Abstract A standard model effective field theory (SMEFT) analysis with dimension-six operators probing nonresonant new physics effects is performed in the Higgs-strahlung process, where the Higgs boson is produced in association with a W or… read more here.
Keywords: model effective; proton; higgs boson; standard model ... See more keywords
Standard Model anomalies and vacuum stability for lepton portals with extra U(1) symmetry
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DOI: 10.1007/jhep03(2025)122
Abstract: Recently, the experimental values of the muon (g − 2)μ and of the W boson mass mW have both indicated significant deviations from the SM predictions, motivating the exploration of extensions with extra particles and… read more here.
Keywords: model anomalies; lepton; vacuum stability; standard model ... See more keywords
Conformal freeze-in from neutrino portal
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DOI: 10.1007/jhep04(2025)089
Abstract: We study a scenario where a dark sector, described by a Conformal Field Theory (CFT), interacts with the Standard Model through the neutrino portal. In this setup, conformal invariance breaks below the electroweak scale, causing… read more here.
Keywords: neutrino portal; standard model; model; conformal freeze ... See more keywords
Singleton portals to the twin sector
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2019)016
Abstract: A bstractThe mirror twin Higgs framework allows for a natural Higgs mass while being consistent with collider bounds on colored symmetry partners to standard model quarks. This mechanism relies crucially on a discrete symmetry which… read more here.
Keywords: sector; singleton portals; standard model; twin sector ... See more keywords
Global anomalies in the Standard Model(s) and beyond
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DOI: 10.1007/jhep07(2020)232
Abstract: We analyse global anomalies and related constraints in the Standard Model (SM) and various Beyond the Standard Model (BSM) theories. We begin by considering four distinct, but equally valid, versions of the SM, in which… read more here.
Keywords: standard model; gauge group; global anomalies; model beyond ... See more keywords
Standard Model prediction of the Bc lifetime
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DOI: 10.1007/jhep07(2021)130
Abstract: Abstract Applying an operator product expansion approach we update the Standard Model prediction of the Bc lifetime from over 20 years ago. The non-perturbative velocity expansion is carried out up to third order in the… read more here.
Keywords: standard model; model prediction; physics; prediction lifetime ... See more keywords
The decay h → γγ in the Standard-Model Effective Field Theory
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2018)103
Abstract: A bstractAssuming that new physics effects are parametrized by the Standard-Model Effective Field Theory (SMEFT) written in a complete basis of up to dimension-6 operators, we calculate the CP-conserving one-loop amplitude for the decay h… read more here.
Keywords: effective field; model effective; theory; standard model ... See more keywords
Singlet scalar and 2HDM extensions of the Standard Model: CP-violation and constraints from (g − 2)μ and eEDM
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DOI: 10.1007/jhep09(2018)059
Abstract: A bstractWe study popular scalar extensions of the Standard Model, namely the singlet extension, the 2-Higgs doublet model (2HDM) and its extension by a singlet scalar. We focus on the contributions of the added scalars… read more here.
Keywords: moment; standard model; violation; singlet scalar ... See more keywords