Physics

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Shiv Nadar University

We suggest a modified factorization scheme within a supersymmetric framework which affords a consistent treatment of a wide class of Schrödinger potentials. A consequence of this is the possibility of deriving a boson-fermion Hamiltonian with linear interaction. © 1993 Plenum Publishing Corporation.

(SoNS) School of Natural Sciences

World University root node

International Journal of Theoretical Physics

Modified factorization method and supersymmetric quantum mechanics

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Physics Letters B

Comment on "from N=2 supersymmetry to quantum deformation"

We present a comprehensive scheme of deformation and apply it to supersymmetric quantum mechanics. We work out the connection with a recently proposed model and explore a new mode of quantum deformation. © 1993.

Physics Letters A

Deformation in supersymmetric quantum mechanics

We consider a pole-model scheme to study isospin violation in the quark and gluon contribution to the proton matrix element of the flavor-singlet axial-vector current. © 1993 The American Physical Society.

Physical Review D

Remarks on quark and gluon contribution to proton spin

The violation of the Delta I=1/2 rule and the effects of the isospin violation in Delta S=1 weak transitions are analysed for the K to 2 pi , K to 3 pi , angle , Xi and Sigma hyperon decays.

Journal of Physics G: Nuclear and Particle Physics

Isospin violation in delta S=1 weak transitions-a re-examination

The baryon mass spectrum is studied to determine the u u, d, and s contents in the nucleon. We find that higher-order symmetry-breaking terms in the mass operator are necessary to estimate p|u»u|p, p|d»d|p, and p|s»s|p in a self-consistent way. We also assess the scalar (pseudoscalar) Higgs-boson couplings to baryons. © 1992 The American Physical Society.

Flavor violation in Higgs-boson couplings to baryons

We consider the nucleonic matrix element of the divergence of the gauge invariant flavour singlet axial current and show by a careful analysis that isospin-dependent terms persist in it. We also relate the axial singlet charge to the sum of the quark spin contributions and F D ratio and point out that in order to be consistent with the EMC data a small value is not ruled out. © 1991.

Proton spin dynamics and axial singlet charge

Utilizing the quark-glue structure of the eta and eta ' mesons and exploiting the SU(3) relationships among the meson-baryon coupling constant, the authors show that the baryon loop calculation of the pi 0, eta , eta ' to gamma gamma amplitudes allows one a straightforward estimation of the strangeness content in the nucleon. The role of the gluonic couplings of the eta and eta ' is explored.

Estimate of strangeness content of the nucleon

We have examined the saturation of anomalous Ward identities by the low-lying pseudoscalars 0, and to determine the sizes of 0, and 0 mixing angles. The mixing angle turns out to be about -20°which is consistent with the recent findings. Our estimate for the 0- mixing angle shows that it could be bigger than the older value obtained from the mixing, baryon mass splittings, and kaon mass difference. © 1990 The American Physical Society.

0 mixing

We enquire into the consequences of the nonuniqueness of the factorizability of a quantum mechanical Hamiltonian in one dimension. This leads to a hierarchy of potentials, a particular class of which is endowed with the energy spectrum of the harmonic oscillator. © 1989 Plenum Publishing Corporation.