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Collected Works of Prof. Rajasekaran: Recent submissions

  • Contribution of gluons and coloured Higgs bosons to e+-e- annihilation into three jets 
    Lakshmibala S.; Rajasekaran G.; Rindani S.D. (1981)
    Three-jet thrust and angular distributions in e+e- annihilation are calculated in the integer-charge quark model. The complete contributions of gluons and Higgs scalars are presented. Deviations from QCD results are in ...
  • Erratum: Color gluon excitation at Fermilab 
    Rajasekaran G.; Roy P. (1976)
    [No abstract available]
  • Non-renormalization of the weak vertex in gauge theories with integrally charged quarks 
    Rajasekaran G.; Sri Ram M.S. (Indian Academy of Sciences, Bangalore, 1982)
    We give current algebra arguments to show that to O(α) the colour octet vertices do not renormalize the effective weak vertex between colour singlet hadrons in models with broken colour symmetry. The result does not depend ...
  • Erratum: 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]
  • The recent single-tag two-photon experiments at petra and the issue of quark charges 
    Godbole R.M.; Pati J.C.; Rindani S.D.; Jayaraman T.; Rajasekaran G. (1984)
    The data of recent single-tag two-photon experiments indicating noticeable excess in (Rγγ)jet over fractionally charged quark-parton model-predictions is studied from the point of view of its implications on the gauge ...
  • Direct photon production in e+e- collisions 
    Jayaraman T.; Rajasekaran G.; Rindani S.D. (1985)
    We study the process e+e-+X as a possible test to distinguish between fractionally-charged-quark models and gauged integer-charged-quark models. We find that charge-asymmetry measurement in this process would not distinguish ...
  • Large-N gauge theory of loops and strings. II 
    Bohr H.; Rajasekaran G. (1985)
    A QCD model that is constructed entirely in terms of gauge-invariant composite fields, i.e., Wilson loops and strings as a nonlocal SU(N) gauge theory, will be approximately solved in this article. A scattering theory is ...
  • Large-N gauge theory of loops and strings. I 
    Bohr H.; Rajasekaran G. (1985)
    A large-N gauge model is constructed entirely in terms of gauge-invariant composite fields. The model is formulated in a canonical framework where the Hamiltonian contains only the Wilson-loop and string operators and their ...
  • Theoretical implications of the resonance anomalies in the e+-e- system 
    Pakvasa S.; Rajasekaran G.; Tuan S.F. (1975)
    The phenomenological properties of the recent resonance anomalies at 3.1 GeV and 3.7 GeV in e+-e- systems are confronted in a fairly systematic way with models presently known to us. These include charm-related models, ...
  • General space-time structure of the neutral-current interactions 
    Pakvasa S.; Rajasekaran G. (1975)
    We present a general analysis of the neutral-current inclusive cross section taking into account all the covariants (scalar, pseudoscalar, tensor, vector, and axial-vector) in the interaction. We derive the model-independent ...
  • Bounds on the coupling constants of the neutral current 
    Rajasekaran G.; Sarma K.V.L. (1975)
    We derived bounds on the coupling constants which characterize the strengths of the various pieces of the weak hadronic neutral current using isospin invariance of strong interactions alone. For the numerical evaluation ...
  • 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 ...
  • 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 ...
  • An SO(10) GUT with see-saw masses for all fermions 
    Desai B.R.; Rajasekaran G.; Sarkar U. (2005)
    We propose an SO(10) grand unified theory in which all fermions acquire see-saw masses. We include only two Higgs scalars, a 210-plet and a 16-plet. In addition to the regular fermions we include one singlet per generation, ...
  • 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 ...
  • 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 ...

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