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DSpace at IMSc: Recent submissions

  • Radiative decays, photoproduction and total cross section of the ψ particles 
    Sarma K.V.L.; Rajasekaran G.; Pasupathy J. (Indian Academy of Sciences, Bangalore, 1976)
    It is pointed out that the coupling characterizing the ψ-γ vertex must change substantially between the limits, ψ on mass-shell which occurs in ψ→e+ e- and photon on mass-shell which is relevant in radiative decays like ...
  • Electron-positron annihilation into three jets in the integer-charge quark model 
    Rajasekaran G.; Rindani S.D. (1980)
    We discuss e+e− → 3 jets in the integer-charge qaurk model. In the lowest non-trivial order, ignoring coloured Higgs scalars, we find that three-gluon jets would be observable at present PETRA energies if the gluon mass ...
  • Constraints on the parameters of the left-right symmetric gauge models 
    Bajaj J.K.; Rajasekaran G. (1980)
    We find an important constraint on the parameters of the general four-parameter left-right symmetric model. The constraint links the v-hadron sector of the model with the parity-violation sector. Using this constraint along ...
  • 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 ...
  • Two-photon production in pp and pp collisions 
    Jayaraman T.; Rajasekaran G.; Rindani S.D. (1986)
    We show that the process pp (pp)++X is a powerful test to distinguish between gauged integer-charged-quark models (ICQMs) and fractionally-charged- quark models (FCQMs). We study the ratio of the two-photon production cross ...
  • The possibility of two-gluon jets in electron-positron annihilation 
    Rajasekaran G.; Rindani S.S. (1979)
    The possibility of two-gluon jets in electron-positron annihilation is pointed out. Because of this gluon contribution, the overall angular distribution of the jets in the scaling limit is predicted to be 1 + 0.86cos2θ. © 1979.
  • 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]
  • Classical solutions of a model of quark confinement 
    Rajasekaran G.; Srinivasan V. (Indian Academy of Sciences, Bangalore, 1978)
    We find the classical solutions of a model of quark confinement defined by the vanishing of colour currents. Both plane-wave type of solutions extending all over space as well as string-type of solutions confined to ...
  • A note on the annihilation of polarised e+e- beams into jets in the broken colour gauge theory 
    Lakshmibala S.; Rajasekaran G.; Rindani S.D. (1982)
    The dependence of angular distribution on polarisation for the processes of transverse or longitudinally polarised e+e- beams annihilating into two or three jets has been got from very general considerations. It is seen ...
  • Spin dependence of the charged-gluon contribution in deep-inelastic scattering 
    Mani H.S.; Rajasekaran G.; Rindani S.D. (1980)
    In the integer-charge quark model, it is found that because of the photon-gluon mixing, only the zero-helicity gluons couple to deep-inelastic probes. As a particular consequences, gluons do not contribute to the (longitudinal) ...
  • 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 ...
  • 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 ...