Conveners
Neutrinos II
- Bhupal Dev (Washington University in St. Louis)
In this talk, I will talk about my recent work on the strong CP problem and the neutrino mass. We present a solution to the strong CP-problem in which the imaginary component of the up quark mass, acquires a very small, but non-vanishing value. This is achieved via a Dirac seesaw mechanism, which is also responsible for the generation of the small neutrino masses. Consistency with the observed...
Left-Right Symmetric Model (LRSM) is a high-energy extension of the Standard Model (SM), and provides an attractive framework to explain neutrino masses through see-saw mechanism. The scalar potential of the LRSM is much more complicated than the SM due to presence of a SU(2) bi-doublet and left \& right-handed weak isospin triplets in the model. We derive the analytic conditions for vacuum...
We assess the sensitivity of the LHC, its high energy upgrade, and a prospective
100 TeV hadronic collider to the Dirac Yukawa coupling of the heavy neutrinos in
left-right symmetric models (LRSMs). We focus specifically on the trilepton final
state in regions of parameter space yielding prompt decays of the right-handed
gauge bosons ($W_R$) and neutrinos ($N_R$). In the minimal LRSM, the...
A qualitatively new search strategy for multi-lepton searches for heavy neutrinos at hadron colliders is presented. The analysis relies on an unusual (dynamic) implementation of a jet veto, one that discriminates on an event-by-event basis, and is applicable to searches for other new, colorless particles, e.g., smuons and doubly charged scalars. We show that the sensitivity to electroweak and...
We consider a gauged U(1) B−L (Baryon-minus-Lepton number) extension of the Standard Model (SM), which is anomaly-free in the presence of three Right-Handed Neutrinos (RHNs). Associated with the U(1)B−L symmetry breaking the RHNs acquire their Majorana masses and then play the crucial role to generate the neutrino mass matrix by the seesaw mechanism. Towards the experimental confirmation of...
Motivated by the null results of the BSM searches in the post-Higgs era of the LHC, our current approach is to look for new physics shifting from theory driven search strategies to signature driven ones. One possible direction might come from investigating the long-lived particles (LLP’s) present in different theoretical scenarios through the “Lifetime frontier”. We discuss a non-sterile...
Heavy neutrinos are essential ingredients in the type-I seesaw mechanism for neutrino masses. Mixing and CP violation in the heavy neutrino sector therefore not only translate into neutrino oscillation parameters but also play an important role in generating the observed baryon asymmetry of the universe via leptogenesis. We show that future hadron colliders can directly access these mixing...
Neutrinos are massless in the Standard Model (SM), therefore, to explain neutrino oscillation, physics beyond SM is needed. The type-II seesaw mechanism is one of the mechanisms that can naturally generate neutrino masses. In this talk, I will discuss phenomenology of the type-II seesaw scalar triplet model at the 100$\,$TeV $pp$ collider, focusing on: (1) model discovery; (2) Higgs portal...
