47 citations · 222 across the 29 of their papers we have counts for
29 papers
Parity anomaly in Dirac equation in (1+2) dimensions, quantum electrodynamics and pair production
Riazuddin
It is shown that parity operator plays an interesting role in Dirac equation in (1+2) dimensions and can be used for defining chiral currents. It is shown that the "anomalous" curr…
Second-class current effects from isospin breaking in tau-->omega pi nu_tau
Nello Paver, Riazuddin
Second-class weak currents can in the standard model be induced by chiral symmetry breaking. In the specific case of the decay tau-->omega pi nu_tau, dominated by the first-class v…
Spin-orbit splittings in heavy-light mesons and Dirac equation
Riazuddin, Sidra Shafiq
The spin-orbit splitting in heavy-light mesons is seen to be suppressed experimentally. It is shown that it can be understood qualitatively in the frame work of Dirac theory. An al…
Dynamical Symmetries of Dirac Hamiltonian
Riazuddin
Several dynamical symmetries of the Dirac Hamiltonian are reviewed in a systematic manner and the conditions under which such symmetries hold. These include relativistic spin and o…
Dirac equation for quasi-particles in graphene in an external electromagnetic field and chiral anomaly
Riazuddin
There is evidence for existence of massless Dirac quasi-particles in graphene, which satisfy Dirac equation in (1+2) dimensions near the so called Dirac points which lie at the cor…
On the branching ratio of the "second class" tau --> eta' pi nu_tau decay
N. Paver, Riazuddin
We present an assessment of the standard model expectations for the branching ratio of the isotopic spin and G-parity violating decay tau --> eta' pi nu_tau. The estimate is based…