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DSpace at IMSc: Recent submissions

  • Do the PETRA two-photon jet experiments rule out integrally charged quarks? 
    Jayaraman T.; Rajasekaran G.; Rindani S.D. (1982)
    The data on two-jet production in the PETRA single-tag two-photon experiments have been analyzed in the integer-charge quark model based on a spontaneously broken SU(3) colour gauge theory. The results show that the model ...
  • 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 ...
  • Erratum: Color gluon excitation at Fermilab 
    Rajasekaran G.; Roy P. (1976)
    [No abstract available]
  • Model-independent analysis of the neutral-current interaction in the inclusive neutrino reactions 
    Rajasekaran G.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1974)
    On the basis of some general assumptions on the deep inelastic structure functions, such as scaling and chiral symmetry we determine the values of {(HV3)2+(HA3)2}+η{(HV0)2+(HA0)2} and HV3 HA3+ηHV0 HA0 where HV3,0 and HA3,0 ...
  • 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 ...
  • Effective-dipole form-factors for the Kl3-decay 
    Chhajlany S.C.; Pandit L.K.; Rajasekaran G. (1971)
    To describe the latest experimental situation on the Kl3 decays (which shows large λ+≈0.07 along with a ξ≈-0.9), effective-dipole form-factors, satisfying exact results of first order breaking of the chiral SU3 ⊗ SU3 ...
  • Scaling and the asymptotic behaviour of form factors 
    Divakaran P.P.; Rajasekaran G. (1973)
    It is shown that if all spin averaged matrix elements for the production of an arbitrary hadronic state |i> by the absorption of a virtual photon of momentum q on a proton vanish as q2→∞ (space-like), and if this ...
  • 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 ...
  • Erratum: Fixed pole in the virtual compton amplitude A2 
    Rajaraman R.; Rajasekaran G. (1971)
    [No abstract available]
  • General bounds on the isovector coupling constants of the weak neutral current 
    Rajasekaran G.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1976)
    We show that experimental data on inclusive neutrino reactions can be used to obtain general bounds on the coupling constants of the isovector part of the hadronic weak neutral current provided this isovector current is ...
  • Contribution of coloured Higgs bosons to e+e- annihilation into two jets 
    Rajasekaran G.; Rindani S.D. (1981)
    We examine the effect of the coloured Higgs bosons (of the integer-charge quark model) on electron-positron annihilation into two jets. The overall angular distribution of the quark + gluon + Higgs jets in the scaling limit ...
  • Comments on "is bound charm found?" 
    Pasupathy J.; Rajasekaran G. (1975)
    The inadequacy of the Ansatz proposed by De Rújula and Glashow for explaining the meson masses is discussed. The importance of fixing the spin-parity of the abnormal parity states E(1420) and D(1285) for the possible success ...
  • Divergences of the higher-order corrections to μ decay in Weinberg's gauge theory 
    Rajasekaran G. (1972)
    The leading (quadratic) divergences in the second-order weak and electromagnetic corrections to μ decay are calculated in Weinberg's gauge theory and it is shown that, after renormalization, these divergences cancel. © ...
  • Renormalizable theories from nonrenormalizable interactions 
    Rajasekaran G.; Srinivasan V. (Indian Academy of Sciences, Bangalore, 1977)
    By using Kikkawa's method the equivalence of the nonrenormalizable pair interaction {Mathematical expression} to a renormalizable theory is proved. Equivalence relationships between a few other nonrenormalizable and ...
  • Fields with vanishing colour-currents 
    Rajasekaran G.; Srinivasan V.; Ram M.S.S. (Springer India, 1985)
    We consider spinor, scalar and vector fields with colour degrees of freedom and find the classical solutions when the constraint of vanishing colour currents is imposed. We find that there are no non-trivial c-number ...
  • The electroweak mixing angle in unified gauge theories-the renormalisation effects 
    Bajaj J.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1980)
    A general analysis of the renormalisation corrections to the unification results for the coupling constants of strong and electroweak interactions is attempted. In particular, the effects of introducing an energy scale ...
  • Neutral current cross-sections for neutrinos on protons 
    Rajasekaran G.; Sarma K.V.L. (Indian Academy of Sciences, Bangalore, 1978)
    Defining the ratios rp =σ(vp →vx)/σ(vp →μ- x) and {Mathematical expression} we obtain the bounds 0.28 ≤rp ≤ 0.61 and {Mathematical expression} using only the parton model and the data of CDHS group with iron target. We ...
  • Effect of gluons on neutral-current interactions in deep inelastic neutrino scattering 
    Rajasekaran G.; Roy P. (Indian Academy of Sciences, Bangalore, 1975)
    The contribution of neutral spin-1 gluons to the deep inelastic neutral-current processes v(v)+N→v(v)+ hadrons is worked out in the parton model. Such a contribution violates Bjorken scaling strongly. © 1975 the Indian ...