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Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model

In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson (\(Z^{\prime }\)). We have pointed out that...

Searching for the Minimal Seesaw Models at the LHC and Beyond

@scisyhpmadnirasad Received 28 July 2017; Accepted 21 February 2018; Published 19 April 2018 Academic Editor: Ning Chen Copyright © 2018 Arindam Das. This is an open access article distributed under the Creative

Scalar dark matter search from the extended νTHDM

Abstract We consider a neutrino Two Higgs Doublet Model (νTHDM) in which neutrinos obtain naturally small Dirac masses from the soft symmetry breaking of a global U(1) X symmetry. We extended the model so the soft term is generated by the spontaneous breaking of U(1) X by a new scalar field. The symmetry breaking pattern can also stabilize a scalar dark matter candidate. After...

Electroweak vacuum stability in classically conformal \(B-L\) extension of the standard model

We consider the minimal U(1)\(_{B-L}\) extension of the standard model (SM) with the classically conformal invariance, where an anomaly-free U(1)\(_{B-L}\) gauge symmetry is introduced along with three generations of right-handed neutrinos and a U(1)\(_{B-L}\) Higgs field. Because of the classically conformal symmetry, all dimensional parameters are forbidden. The \(B-L\) gauge...

Understanding collaboration in a multi-national research capacity-building partnership: a qualitative study

Background Research capacity building and its impact on policy and international research partnership is increasingly seen as important. High income and low- and middle-income countries frequently engage in research collaborations. These can have a positive impact on research capacity building, provided such partnerships are long-term collaborations with a unified aim, but they...