J Pasupathy
Articles written in Pramana – Journal of Physics
Volume 6 Issue 1 January 1976 pp 29-33 Nuclear And Particle Physics
Radiative decays, photoproduction and total cross section of the
K (xxxV) L Sarma G Rajasekaran J Pasupathy
It is pointed out that the coupling characterizing the
Volume 10 Issue 5 May 1978 pp 537-544 Nuclear And Particle Physics
Partially conserved axial-vector current in
Mandelstam’s argument that PCAC follows from assigning Lorentz quantum number
Volume 15 Issue 4 October 1980 pp 327-340 Particle Physics
A general derivation of the coupling constant relations which result on embedding a non-simple group like SU_{L} (2) ⇔ U(1) in a larger simple group (or graded Lie group) is given. It is shown that such relations depend only on the requirement (i) that the multiplet of vector fields form an irreducible representation of the unifying algebra and (ii) the transformation properties of the fermions under SU_{L} (2). This point is illustrated in two ways, one by constructing two different unification groups containing the same fermions and therefore have same Weinberg angle; the other by putting different SU_{L} (2) structures on the same fermions and consequently have different Weinberg angles. In particular the value sin^{2}ϑ=3/8 is characteristic of the sequential doublet models or models which invoke a large number of additional leptons like
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