Many theories beyond the Standard Model (BSM) predict new phenomena at the highest energies accessible by the LHC.Several searches for new resonances have been performed by the ATLAS and CMS experiments.This paper presents results using 13 TeV pp data collected during Run 2 by the ATLAS and CMS experiments.
In the context of the $\mathrm{SU(3)_c \otimes SU(3)_L \otimes U(1)_X \otimes U(1)_{N}}$ (3-3-1-1) extension of the standard model, we show how the spontaneous breaking of the gauge symmetry gives rise to a residual symmetry which accounts for dark matter stability and small neutrino masses in a scotogenic fashion. As a special feature, the gauge structure implies that one of the light neutrinos is massless and, as a result, there is a lower bound for the $0\nu\beta\beta$ decay rate.
The ANTARES underwater neutrino telescope has been operating for more than twelve years with a successful and wide physics program, which will be broadened by the KM3NeT infrastructure, currently under construction in the Mediterranean Sea.The two configurations of KM3NeT, ARCA offshore Sicily (IT) and ORCA offshore Toulon (FR), will investigate the high-energy astrophysical neutrino landscape, and perform precision measurements of oscillation parameters with atmospheric neutrinos.ARCA is designed to have excellent angular resolution and a very large volume, instrumenting 1 km 3 of water.ORCA is optimised for detection in the 3 GeV energy range with a dense geometry.The two detectors share the same technology and data access philosophy, being modular units of a unique infrastructure.Results and perspectives in neutrino astrophysics searches (steady and transient sources, multimessenger programs and diffuse astrophysical neutrino fluxes), in neutrino oscillation research, in indirect dark matter detection, and in sea and Earth science will be presented.
MicroBooNE is the first phase of Fermilab's Short Baseline Neutrino (SBN) Liquid Argon Time Projection Chamber (LArTPC) programme.It aims to improve the understanding of the observed excess of lowenergy electromagnetic events at MiniBooNE.The current status of the low-energy excess search in Micro-BooNE is presented.
The flavor problem is reviewed starting with the chiral symmetry, and the $A_4$ symmetry derivation and its realization in GUTs are presented.
