P. S. Bhupal Dev

A facility to search for hidden particles at the CERN SPS: the SHiP physics case.

This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (search for hidden particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC experiments, and to study tau neutrino physics. The same proton beam setup can be used later to look for decays of tau-leptons with lepton flavour number non-conservation, [Formula: see text] and to search for weakly-interacting sub-GeV dark matter candidates. We discuss the evidence for physics beyond the standard model and describe interactions between new particles and four different portals-scalars, vectors, fermions or axion-like particles. We discuss motivations for different models, manifesting themselves via these interactions, and how they can be probed with the SHiP experiment and present several case studies. The prospects to search for relatively light SUSY and composite particles at SHiP are also discussed. We demonstrate that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the standard model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.

Neutrinos and collider physics

We review the collider phenomenology of neutrino physics and the synergetic aspects at energy, intensity and cosmic frontiers to test the new physics behind the neutrino mass mechanism. In particular, we focus on seesaw models within the minimal setup as well as with extended gauge and/or Higgs sectors, and on supersymmetric neutrino mass models with seesaw mechanism and with

TeV Scale Inverse Seesaw in SO(10) and Leptonic Non-Unitarity Effects

R

Maximally Symmetric Two Higgs Doublet Model with Natural Standard Model Alignment

-parity violation. In the simplest Type-I seesaw scenario with sterile neutrinos, we summarize and update the current experimental constraints on the sterile neutrino mass and its mixing with the active neutrinos. We also discuss the future experimental prospects of testing the seesaw mechanism at colliders and in related low-energy searches for rare processes, such as lepton flavor violation and neutrinoless double beta decay. The implications of the discovery of lepton number violation at the LHC for leptogenesis are also studied.

Flavour covariant transport equations: An application to resonant leptogenesis

We show that a TeV scale inverse seesaw model for neutrino masses can be realized within the framework of a supersymmetric

Naturalness of Light Neutralino Dark Matter in pMSSM after LHC, XENON100 and Planck Data

SO(10)

Direct bounds on electroweak scale pseudo-Dirac neutrinos from s=8 TeV LHC data

model consistent with gauge coupling unification and observed neutrino masses and mixing. We present our expectations for nonunitarity effects in the leptonic mixing matrix, some of which are observable at future neutrino factories as well as the next generation searches for lepton flavor violating processes such as

Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies

ensuremath{mu}ensuremath{rightarrow}e+ensuremath{gamma}

125 GeV Higgs boson and the type-II seesaw model

. The model has TeV scale

Disambiguating seesaw models using invariant mass variables at hadron colliders

{W}_{R}