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Charting generalized supersoft supersymmetry

Abstract Without any shred of evidence for new physics from LHC, the last hiding spots of natural electroweak supersymmetry seem to lie either in compressed spectra or in spectra where scalars are suppressed with respect to the gauginos. While in the MSSM (or in any theory where supersymmetry is broken by the F-vev of a chiral spurion), a hierarchy between scalar and gaugino...

Natural emergence of neutrino masses and dark matter from R-symmetry

We propose a supersymmetric extension of the Standard Model (SM) with a continuous global U(1) R symmetry. The R-charges of the SM fields are identified with that of their lepton numbers. As a result, both bilinear and trilinear ‘R-parity violating’ (RPV) terms could be present at the superpotential. However, R-symmetry is not an exact symmetry as it is broken by supergravity...

Constraining compressed versions of MUED and MSSM using soft tracks at the LHC

A compressed spectrum is an anticipated hideout for many beyond standard model scenarios. Such a spectrum naturally arises in the minimal universal extra dimension framework and also in supersymmetric scenarios. Low p T leptons and jets are characteristic features of such situations. Hence, a monojet with has been the conventional signal at the Large Hadron Collider (LHC...

Neutrino mixing and R K anomaly in U(1) X models: a bottom-up approach

We identify a class of U(1) X models which can explain the R K anomaly and the neutrino mixing pattern, by using a bottom-up approach. The different X-charges of lepton generations account for the lepton universality violation required to explain R K . In addition to the three right-handed neutrinos needed for the Type-I seesaw mechanism, these minimal models only introduce an...

Erratum to: h → γγ in U(1) R -lepton number model with a right-handed neutrino

Research Institute Sabyasachi Chakraborty,a,1 AseshKrishna Dattab and Sourov Roya aDepartment of Theoretical Physics, Indian Association for the Cultivation of Science, We found a sign error in our

Higgs boson mass, neutrino masses and mixing and keV dark matter in an U(1) R − lepton number model

Sabyasachi Chakraborty 0 Sourov Roy 0 0 Department of Theoretical Physics, Indian Association for the Cultivation of Science , 2A & 2B Raja S.C. Mullick Road, Jadavpur, Kolkata-700032, India We

h → γγ in U(1) R -lepton number model with a right-handed neutrino

We perform a detailed study of the signal rate of the lightest Higgs boson in the diphoton channel (μ γγ ), recently analyzed by both the ATLAS and CMS collaborations at the Large Hadron Collider, in the framework of U(1) R − lepton number model with a right handed neutrino superfield. The corresponding neutrino Yukawa coupling, ‘f’, plays a very important role in the...

7 keV sterile neutrino dark matter in U(1) R -lepton number model

We study the phenomenology of a keV sterile neutrino in a supersymmetric model with U(1) R -lepton number in the light of a very recent observation of an X-ray line signal at around 3.5 keV, detected in the X-ray spectra of Andromeda galaxy and various galaxy clusters including the Perseus galaxy cluster. This model not only provides a small tree level mass to one of the active...