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11 papers · 2 filters
Cerenkov radiation of longitudinal photons by neutrinos
Sarira Sahu
In a relativistic plasma neutrino can emit plasmons by the Cerenkov process which is kinematically allowed for a range of frequencies for which refractive index is greater than one…
Baryogenesis in a supersymmetric model without R-parity
Rathin Adhikari, Utpal Sarkar
We propose a simple scenario for baryogenesis in supersymmetric models where baryon number is broken alongwith R-parity. The lightest supersymmetric particle (neutralino) decays to…
Gravitational Violation of R Parity and its Cosmological Signatures
V. Berezinsky, Anjan S. Joshipura, J. W. F. Valle
The discrete R-parity () usually imposed on the Supersymmetric (SUSY) models is expected to be broken at least gravitationally. If the neutralino is a dark matter particle its…
Baryogenesis through R-parity violation
Utpal Sarkar, Rathin Adhikari
We consider generation of baryon asymmetry of the universe through parity violation in a scenario in which out-of-equilibrium condition is satisfied by making the electroweak p…
The Polarised production in QCD
V. Ravindran
The evolution of polarised parton fragmentation functions is discussed using Altarelli-Parisi evolution equations. The first moments of both polarised quark and gluon fragmen…
Electroweak Baryogenesis and Constraints on Left-handed Majorana Neutrino Masses
Utpal Sarkar
The lepton number violating interactions generated by the light Majorana neutrinos can erase the primordial baryon asymmetry of the universe during the electroweak phase transition…