Results 21 to 30 of about 1,152,838 (195)

Recent results on beyond the standard model Higgs boson searches from CMS

open access: yesEPJ Web of Conferences, 2012
Two extensions of the standard model, one that includes the seesaw mechanism of type II, and the minimal supersymmetric extention to the standard model, are studied using up to 1.6 fb−1 of data collected in proton-proton collisions at √s = 7 TeV with the
Savin Alexander A.
doaj   +1 more source

Electroweak phase transition in a right-handed neutrino superfield extended NMSSM

open access: yesJournal of High Energy Physics, 2023
Supersymmetric models with singlet extensions can accommodate single- or multi-step first-order phase transitions (FOPT) along the various constituent field directions.
Pankaj Borah   +3 more
doaj   +1 more source

Flavour Physics with SuperIso [PDF]

open access: yesarXiv, 2021
We describe SuperIso v4.1, a public code for calculation of flavour observables, in the Standard Model and for New Physics scenarios in a model-independent way as well as for specific beyond the SM models such as two Higgs doublet models (2HDM), minimal supersymmetric Standard Model (MSSM) and next-to-minimal supersymmetric Standard Model (NMSSM).
arxiv  

Lepton Flavor Violation beyond the MSSM

open access: yesAdvances in High Energy Physics, 2015
Most extensions of the Standard Model lepton sector predict large lepton flavor violating rates. Given the promising experimental perspectives for lepton flavor violation in the next few years, this generic expectation might offer a powerful indirect ...
A. Vicente
doaj   +1 more source

Bayesian analysis and naturalness of (Next-to-)Minimal Supersymmetric Models

open access: yesJournal of High Energy Physics, 2017
The Higgs boson discovery stirred interest in next-to-minimal supersymmetric models, due to the apparent fine-tuning required to accommodate it in minimal theories.
Peter Athron   +5 more
doaj   +1 more source

Status of the singlino-dominated dark matter in general Next-to-Minimal Supersymmetric Standard Model

open access: yesJournal of High Energy Physics, 2023
With the rapid progress of dark matter direct detection experiments, the attractiveness of the popular bino-dominated dark matter in economical supersymmetric theories is fading.
Junjie Cao   +4 more
doaj   +1 more source

Foundations of Ghost Stability

open access: yesFortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract The authors present a new method to analytically prove global stability in ghost‐ridden dynamical systems. The proposal encompasses all prior results and consequentially extends them. In particular, it is shown that stability can follow from a conserved quantity that is unbounded from below, contrary to expectation.
Verónica Errasti Díez   +2 more
wiley   +1 more source

Improved predictions for intermediate and heavy supersymmetry in the MSSM and beyond

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
For a long time, the minimal supersymmetric standard model (MSSM) with light masses for the supersymmetric states was considered as the most natural extension of the Standard Model of particle physics. Consequently, a valid approximation was to match the
Florian Staub, Werner Porod
doaj   +1 more source

Axion, Neutrinos Masses and $μ$-Problem in Minimal Supersymmetric Standard Model (MSSM) [PDF]

open access: yesarXiv, 2020
We review very nice mechanism to generate masses to all the neutrinos in the Minimal Supersymmetric Standard Model (MSSM) without break $R$-parity. In consequence we get viable axion as Dark Matter candidate and at the same time solve the $\mu$-problem in a similar way as done in the Next to Minimal Supersymmetric Model (NMSSM).
arxiv  

Celestial Topology, Symmetry Theories, and Evidence for a NonSUSY D3‐Brane CFT

open access: yesFortschritte der Physik, Volume 73, Issue 4, April 2025.
Abstract Symmetry Theories (SymThs) provide a flexible framework for analyzing the global categorical symmetries of a D$D$‐dimensional QFTD$\text{QFT}_{D}$ in terms of a (D+1)$(D+1)$‐dimensional bulk system SymThD+1$\text{SymTh}_{D+1}$. In QFTs realized via local string backgrounds, these SymThs naturally arise from dimensional reduction of the linking
Jonathan J. Heckman, Max Hübner
wiley   +1 more source

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