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By
Lakshmibala, S; Rajasekaran, G; Rindani, S D
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The twogluonic decay modes ofW andZ in the broken colour model with integrally charged quarks are considered. The gluonic branching ratios are found to be 3% and 2·7% forW andZ respectively. The angular distributions of the decays ofW andZ to two jets of hadrons are also worked out.
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By
Rajasekaran, G; Sri Ram, M S
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We give current algebra arguments to show that toO(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 on the details of the mixing between colour gluons and electroweak bosons.
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By
Mishra, A K; Rajasekaran, G
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6 Citations
A general analysis of bilinear algebras of creation and destruction operators is performed. Generalizing the earlier work on the singleparameterqdeformation of the Heisenberg algebra, we study twoparameter and fourparameter algebras. Two new forms of quantum statistics called orthofermi and orthobose statistics and aqdeformation interpolating between them have been found. In the Fock representation, quadratic relations among destruction operators, wherever they are allowed, are shown to follow from the bilinear algebra of creation and destruction operators. Postitivity of the Hilbert space for the fourparameter algebra has been studied in the twoparticle sector, but for the twoparameter algebra, results are presented up to the fourparticle sector.
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By
Rajasekaran, G; Sarma, KVL
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Defining the ratiosr_{p} =σ(vp →vx)/σ(vp →μ^{−}x) and
$$\bar r_p = \sigma (\bar \nu p \to \bar \nu x)/\sigma (\bar \nu p \to \mu ^ + x)$$
we obtain the bounds 0.28 ⩽r_{p} ⩽ 0.61 and
$$0 \cdot 15 \leqslant \bar r_p \leqslant 0 \cdot 37$$
using only the parton model and the data of CDHS group with iron target. We also give the complete set of partonmodel relations which would allow the determination of all the neutralcurrent coupling constants from inclusive cross sections alone.
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By
Rajasekaran, G; Srinivasan, V; Ram, M S Sri
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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 nontrivialcnumber solutions for spinor fields transforming as a triplet under SU(3), although solutions exist for scalar and vector fields. We also show that the colour current of spinor fields coupled to an instanton is zero.
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By
Sarma, K (xxxV) L; Rajasekaran, G; Pasupathy, J
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4 Citations
It is pointed out that the coupling characterizing theψγ vertex must change substantially between the limits,ψ on massshell which occurs inψ→e^{+}e^{−} and photon on massshell which is relevant in radiative decays likeψ→ππγ, ψ→ηγ and photoproduction ofψ. This has the consequence that the value ofψN total cross section must be larger than what is inferred from the use of naive vector dominance in photoproduction.
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By
Rajasekaran, G; Sarma, K V L
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18 Citations
We attempt a general phenomenological analysis of the neutral weak current in the inclusive neutrino reactions using the parton model as a tool. From the recently reported data on these processes we determine the strengthH of the neutralcurrent interaction as well as the amount of theVA interference. We find (H/G)^{2}=0·54±0·06 whereG is the Fermi coupling constant and theVA interference contribution turns out to be 33±23%. We also discuss the comparison of the data with various models for the neutral hadronic current.
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