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Collected Works of Prof. Rajasekaran: Recent submissions

  • Colour gluons and scaling in a unified gauge model 
    Rajasekaran G.; Roy P. (Indian Academy of Sciences, Bangalore, 1975)
    Deep inelastic weak and electromagnetic processes are considered within the parton framework taking the partons to be integrally charged quarks and coloured gluons. Despite the participation of the spin-one gluons in these ...
  • Neutral currents in left-right symmetric gauge models 
    Bajaj J.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1979)
    We analyse all the neutral-current phenomena following from the general class of gauge models based on the group SU(2)L ⊗ SU(2)R ⊗ U(1). It is found that the neutral-current couplings in these models bear a remarkable ...
  • The electroweak mixing angle in unified gauge theories 
    Bajaj J.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1980)
    We study in detail the factors that influence the unification relations among the coupling parameters of strong and electroweak interactions. We find that the factor that decides the unification relations in a theory is ...
  • Interpretation of the new particle of the cosmic ray neutrino experiment 
    Rajasekaran G.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1975)
    In order to reconcile the life time of the new particle observed in the cosmic ray neutrino experiment with its production rate, it is proposed that the particle has a new quantum number (κ) which may be assigned to leptons ...
  • Inelastic electron-proton scattering and a sum rule for the Schwinger term 
    Gupta V.; Rajasekaran G. (1971)
    It is shown that the form of the one-particle expectation value of the Schwinger term in the equal-time commutator of the electromagnetic current and change densities is determined by relativistic covariance. This allows ...
  • Axial-vector Kl4-decay form factors based on current algebra 
    Chhajlany S.C.; Pandit L.K.; Rajasekaran G. (1970)
    The axial-vector Kl4-decay form factors given by current algebra have been reevaluated using the vector Kl3-decay form factors and the ratio fKfπ, obtained on the basis of broken chiral SU3 SU3 and SU3 symmetries. It is ...
  • The leptonic K-decays with broken SU(3) ⊗ SU(3) and SU(3) and violation of μ- e universality 
    Chhajlany S.C.; Pandit L.K.; Rajasekaran G. (1970)
    A phenomenological treatment of μ - e universality violation in the strangeness-changing decays is proposed to account for the existing discrepancies between the form factors and other decay parameters of the leptonic ...
  • On the electron-muon universality in strangeness-changing processes 
    Rajasekaran G.; Sarma K.V.L. (1970)
    It is suggested that the available data are consistent with the hypothesis that the electronic and the muonic weak currents have slightly different couplings to the strangeness-changing hadronic current. The consequences ...
  • Fixed pole in the virtual compton amplitude A2 
    Rajaraman R.; Rajasekaran G. (1971)
    We suggest here the presence of a J=0 fixed pole in the virtual Compton amplitude A2 with a residue linear in the photon mass q2 for all q2. The resultant sum rule is found to be consistent with the on-mass-shell (q2=0) ...
  • Sum rules from local current algebra 
    Gupta V.; Rajasekaran G. (1969)
    By combining the local current algebra with the commutation relations between the current densities and the Lorentz boost operator, we derive low-energy theorems as well as sum rules which involve neutrino and electron ...
  • Analysis of the neutral-current interaction in the inclusive neutrino reaction 
    Rajasekaran G.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1974)
    [No abstract available]
  • Phenomenology of neutrino oscillations 
    Rajasekaran G. (Indian Academy of Sciences, Bangalore, 2000)
    The phenomenology of solar, atmospheric, supernova and laboratory neutrino oscillations is described. Analytical formulae for matter effects are reviewed. The results from oscillations are confronted with neutrinoless ...
  • Interpretation of the recent Kolar events 
    Joshipura A.S.; Rajasekaran G.; Gupta V.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1989)
    We give plausible interpretations of the unusual events seen in the proton decay detector at Kolar Gold Fields indicating the existence of a massive (≳2GeV) long lived (10-8-10-9s) particle. We show that it is possible to ...
  • Radiative magnification of neutrino mixings in split supersymmetry 
    Mohapatra R.N.; Parida M.K.; Rajasekaran G. (2005)
    Radiative corrections to neutrino mixings in seesaw models depend on the nature of new physics between the weak and the grand unified theory (GUT)-seesaw scales and can be taken into account using the renormalization group ...
  • Solar and atmospheric neutrino oscillations with three flavors 
    Narayan M.; Murthy M.V.N.; Rajasekaran G.; Umasankar S. (1996)
    We analyze the solar and the atmospheric neutrino problems in the context of three flavor neutrino oscillations. We assume a mass hierarchy in the vacuum mass eigenvalues (formula presented), but make no approximation ...
  • New forms of quantum statistics 
    Mishra A.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1992)
    We propose a new two-parameter deformation of the algebra of creation and destruction operators, which allows the construction of a new family of Hillbert spaces with positive definite inner product. This provides a ...
  • Seesaw fermion masses in an SO(10) grand unified theory 
    Bhattacharya K.; Sarkar U.; Das C.R.; Rajasekaran G.; Desai B.R. (2006)
    In this work we study an SO(10) GUT model with minimum Higgs representations belonging only to the 210 and 16 dimensional representations of SO(10). We add a singlet fermion S in addition to the usual 16 dimensional ...
  • Three flavor implications of the result of the CHOOZ Collaboration 
    Narayan M.; Rajasekaran G.; Sankar S.U. (American Institute of Physics Inc., 1998)
    We analyze the recent result of the CHOOZ Collaboration in the context of mixing and oscillations between all the three neutrino flavors. If one assumes the hierarchy among the vacuum mass eigenvalues δ21≪δ31 where δ21=μ22-μ21 ...
  • Atmospheric neutrinos with three flavor mixing 
    Narayan M.; Rajasekaran G.; Sankar S.U. (1997)
    We analyze the atmospheric neutrino data in the context of three flavor neutrino oscillations taking account of the matter effects in the Earth. With the hierarchy among the vacuum mass eigenvalues [Formula presented], the ...
  • Constraints on mixing angles of Majorana neutrinos 
    Adhikari R.; Rajasekaran G. (2000)
    By combining the inputs from the neutrinoless double beta decay and the fits of cosmological models of dark matter with solar and atmospheric neutrino data, we obtain constraints on two of the mixing angles of Majorana ...

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