Zobrazeno 1 - 10
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pro vyhledávání: '"Volkas, Raymond"'
To properly solve the coincidence problem ($\Omega_\mathrm{DM} \simeq 5\Omega_\mathrm{VM}$) in a model of asymmetric dark matter, one cannot simply relate the number densities of visible and dark matter without also relating their particle masses. Fo
Externí odkaz:
http://arxiv.org/abs/2404.05999
Recently Belle II reported the first measurement of $B^+\to K^++{\rm invisible (inv)}$, which is $2.7\sigma$ above the standard model (SM) prediction. If confirmed, this calls for new physics beyond SM. In the SM, the invisible particles are neutrino
Externí odkaz:
http://arxiv.org/abs/2403.12485
Discrete family symmetry models based on the $Z_3$ symmetry of ``lepton triality'' were recently studied in the context of charged-lepton flavour-violating processes at Belle II and the proposed $\mu^+ \mu^+$ and $\mu^+ e^-$ collider known as $\mu$TR
Externí odkaz:
http://arxiv.org/abs/2312.09409
Publikováno v:
J. High Energ. Phys. 2024, 11 (2024)
We provide an exhaustive classification of three-family DFSZ axion models that have no cosmological domain wall problem. This result is obtained by making the Peccei-Quinn symmetry flavour dependent in certain specific ways, thus reinforcing a possib
Externí odkaz:
http://arxiv.org/abs/2310.16348
Publikováno v:
PLB, Volume 845, 10 October 2023, 138144
We analyse the potential of the proposed $\mu^+ \mu^+$ and $\mu^+ e^-$ collider $\mu$TRISTAN to complement the searches for charged-lepton flavour-violation (CLFV) that can be carried out by Belle II. $\mu$TRISTAN offers the possibility of directly p
Externí odkaz:
http://arxiv.org/abs/2307.11369
We revisit stellar constraints on dark photons. We undertake dynamical stellar evolution simulations which incorporate the resonant and off-resonant production of transverse and longitudinal dark photons. We compare our results with observables deriv
Externí odkaz:
http://arxiv.org/abs/2306.13335
Motivated by flavour symmetry models, we construct theories based on a low-energy limit featuring lepton flavour triality that have the flavour-violating decays $\tau^\pm \to \mu^\pm \mu^\pm e^\mp$ and $\tau^\pm \to e^\pm e^\pm \mu^\mp$ as the main p
Externí odkaz:
http://arxiv.org/abs/2212.09760
The asymmetric dark matter (ADM) paradigm is motivated by the apparent coincidence between the cosmological mass densities of visible and dark matter, $\Omega_\mathrm{DM} \simeq 5\Omega_\mathrm{VM}$. However, most ADM models only relate the number de
Externí odkaz:
http://arxiv.org/abs/2210.11011
Publikováno v:
JCAP 10 (2022) 096
We improve the current upper bound on the axion-photon coupling derived from stellar evolution using the $R_2$ parameter, the ratio of stellar populations on the Asymptotic Giant Branch to Horizontal Branch in Globular Clusters. We compare this with
Externí odkaz:
http://arxiv.org/abs/2207.03102
Autor:
Sopov, Alexei H., Volkas, Raymond R.
We propose a Standard Model extension, coined VISH$\nu$ (Variant-axIon Seesaw Higgs $\nu$-trino), that is an $N_{\text{DW}} = 1$ variation of its predecessor, the $\nu$DFSZ model. In accounting for the origin of neutrino masses, dark matter and the b
Externí odkaz:
http://arxiv.org/abs/2206.11598