Recently added

Collected Works: Recent submissions

  • Bi-large neutrino mixings by radiative magnification 
    Mohapatra R.N.; Parida M.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 2004)
    Starting with the unification hypothesis of mixings of quarks and leptons and small quark-like mixings at the see-saw scale, we find that two large mixings for νe, -νμ and νμ - ντ at the weak scale are obtained as a result ...
  • One-pion events by atmospheric neutrinos: A three-flavor analysis 
    Balaji K.R.S.; Rajasekaran G.; Umasankar S. (World Scientific Publishing Co. Pte Ltd, 2001)
    We study the one-pion events produced via neutral current (NC) and charged current (CC) interactions by the atmospheric neutrinos. We analyze the ratios of CC events to the NC events in the framework of neutrino oscillations. ...
  • Algebra for fermions with a new exclusion principle 
    Mishra A.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1991)
    We construct the algebra of the creation and destruction operators for spin 1/2 particles obeying a new exclusion principle which is "more exclusive" than Pauli's exclusion principle: an orbital state shall not contain ...
  • Algebras of creation and destruction operators 
    Mishra A.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1993)
    A general analysis of bilinear algebras of creation and destruction operators is performed. Generalizing the earlier work on the single-parameter q-deformation of the Heisenberg algebra, we study two-parameter and ...
  • Validity of the equivalent-photon approximation for the production of massive spin-1 particles 
    Jayaraman T.; Rajasekaran G.; Rindani S.D. (Indian Academy of Sciences, Bangalore, 1986)
    We point out that the equivalent-photon approximation (EPA) for processes with massive spin-1 particles in the final state would have validity in a more restricted kinematic domain than for processes where it is commonly ...
  • Neutrinos from stellar collapse: Comparison of the effects of three and four flavor mixings 
    Dutta G.; Indumathi D.; Murthy M.V.N.; Rajasekaran G. (2000)
    We study the effect of non-vanishing masses and mixings among neutrino flavors on the detection of neutrinos from stellar collapse by a water Cherenkov detector. We consider a framework in which there are four neutrino ...
  • Neutrinos from stellar collapse: Effects of flavor mixing 
    Dutta G.; Indumathi D.; Murthy M.V.N.; Rajasekaran G. (2000)
    We study the effect of nonvanishing masses and mixings among neutrino flavors on the detection of neutrinos from stellar collapse by a water Cherenkov detector. We consider a realistic framework in which there are three ...
  • Neutrino oscillation probabilities: Sensitivity to parameters 
    Indumathi D.; Murthy M.V.N.; Rajasekaran G.; Sinha N. (2006)
    We study in detail the sensitivity of neutrino oscillation probabilities to the fundamental neutrino parameters and their possible determination through experiments. The first part of the paper is devoted to the broad theme ...
  • Higgs couplings in the integer-charge quark model 
    Lakshmibala S.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1986)
    Colour SU(3) symmetry is broken spontaneously by the introduction of coloured Higgs scalars in the standard SU(3)×SU(2)×U(1) model, so as to make the quarks integrally charged. The resulting couplings of the Higgs bosons ...
  • Double threefold degeneracies for active and sterile neutrinos 
    Ma E.; Rajasekaran G. (2001)
    We explore the possibility that the three active (doublet) neutrinos have nearly degenerate masses which are split only by the usual seesaw mechanism from three sterile (singlet) neutrinos in the presence of a softly broken ...
  • Softly broken A4 symmetry for nearly degenerate neutrino masses 
    Ma E.; Rajasekaran G. (American Physical Society, 2001)
    The leptonic Higgs doublet model of neutrino masses is implemented with an A4 discrete symmetry (the even permutation of four objects or equivalently the symmetry of the tetrahedron) which has four irreducible representations: ...
  • Light unstable sterile neutrino 
    Ma E.; Rajasekaran G. (American Physical Society, 2001)
    The three massless active (doublet) neutrinos may mix with two heavy and one light sterile (singlet) neutrino so that the induced masses and mixings among the former are able to explain the present data on atmospheric and ...
  • An algebra for ordered particles 
    Mishra A.K.; Rajasekaran G. (1995)
    We construct an algebra of creation and destruction operators for a system whose multiparticle states have the property that the permutation of coordinates is forbidden. Although this "null statistics" can be related to a ...
  • Quantum interference effects in a generalised Kaluza-Klein theory 
    Parthasarathy R.; Nagarajan R.; Rajasekaran G. (1987)
    The change in the phase of the wavefunction of a test particle in a (4+n)-dimensional Kaluza-Klein theory is computed. It is found to contain the gravitational and non-Abelian phase shifts separately and simultaneously.
  • e+e-→γ+2 jets as a test of quark charges 
    HE X.G.; Pakvasa S.; Rajasekaran G.; Rindani S.D. (1987)
    It is shown that angular distribution in e+e-→γ+2 jets can serve as a possible test of quark charges but only above color threshold. © 1987.
  • Generalized Fock spaces, new forms of quantum statistics and their algebras 
    Mishra A.K.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 1995)
    We formulate a theory of generalized Fock spaces which underlies the different forms of quantum statistics such as ‘infinite’, Bose-Einstein and Fermi-Dirac statistics. Single-indexed systems as well as multi-indexed systems ...
  • Working group report: Neutrino physics 
    Choubey S.; Indumathi D.; Agarwalla S.; Bandyopadhyay A.; Bhattacharyya G.; Chun E.J.; Dasgupta B.; Dighe A.; Ghoshal P.; Giri A.K.; Goswami S.; Hirsch M.; Kajita T.; Kaplinghat M.; Mani H.S.; Mohanta R.; Murthy M.V.N.; Pakvasa S.; Parida M.K.; Rajasekaran G.; Ray S.; Rodejohann W.; Roy P.; Umasankar S.; Schwetz T.; Sinha N. (Indian Academy of Sciences, Bangalore, 2009)
    This is the report of the neutrino physics working group at WHEPP-X. We summarize the problems selected and discussed at the workshop and the papers which have resulted subsequently. © Indian Academy of Sciences.
  • Anomalous Kolar events revisited: Dark matter? 
    Murthy M.V.N.; Rajasekaran G. (Indian Academy of Sciences, Bangalore, 2014)
    The possibility of the unexplained Kolar events, recorded in the 1970s and 1980s, being due to the decays of dark matter particles of mass in the range of 510 GeV, is pointed out. © Indian Academy of Sciences.
  • Physics beyond Standard Model: Working group 3 report 
    Guchait M.; Vempati S.K.; Agarwal N.; Agarwalla S.K.; Aulakh C.S.; Belyaev A.; Biswal S.S.; Bhattacharjee B.; Bhattacharyya G.; Calibbi L.; Choudhury D.; Chun E.J.; Das D.; De Roeck A.; Deshpande N.G.; Dudas E.; Giri A.; Grellshceid D.; Godbole R.; Goswami S.; Guchait M.; Hirsch M.; Kaul R.; Kodrani B.; Kumar M.C.; Kundu A.; Mambrini Y.; Mathews P.; Mellado B.; Mohanta R.; Mohanty S.; Nyffeler A.; Pakvasa S.; Parida M.K.; Passera M.; Petridou C.; Poddar S.; Poulose P.; Rajaraman A.; Rajasekaran G.; Ravindran V.; Rao K.; Roy D.P.; Roy P.; Saheb K.A.; Satheeshkumar V.H.; Schwetz T.; Tripathi A.; Vaidya R.; Vempati S. (2009)
    This is a, summary of the beyond the Standard Model (including model building) working group of the WHEPP-X workshop held at Chennai from January 3 to 15. 2008. © Indian Academy of Sciences.
  • Neutrino mixings and leptonic CP violation from CKM matrix and Majorana phases 
    Agarwalla S.K.; Parida M.K.; Mohapatra R.N.; Rajasekaran G. (2007)
    The high scale mixing unification hypothesis recently proposed by three of us (R.N.M., M.K.P. and G.R.) states that if at the seesaw scale the quark and lepton mixing matrices are equal, then for quasidegenerate neutrinos ...

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