arXiv subjects

Samina S. Masood

Publications and source records attributed to Samina S. Masood.

23 records · Page 2Linked to original sources

arXiv2007

Better Physics Teaching Can Increase Physics Enrollment

Our main goal is to develop plans to increase physics enrollment. Once again we thoroughly analyze the problem from the beginning and reach the conclusion that the most appropriate starting point in this direction should be to look into K-12 teaching. We give a few recommendations to improve science/physics teaching at K-12 level. It is proposed that the quickest way to make some advancement is to start teacher training or refresher courses for school teachers to fill up their gaps in knowledge. We suggest a comparison of the affectivity of different methods of teaching to decide which one of them works better under what type of circumstances. We also propose a few steps to improve physics teaching standards at the higher levels.

physics.soc-ph↗

arXiv2006

Higher Order Thermal Corrections to Photon Self Energy

We investigate temperature behavior up to two loop level in QED in the background heat bath using real time formalism. The thermal correction to the coupling constant in QED at low temperature are presented up to the two loop level. It is observed that the removal of singularities at the two loop level is only possible if the integrations of loop momenta are done in a specific order. Some of the possible applications of the results are also indicated.

hep-ph↗

arXiv2005

The Decrease in Physics Enrollment

We discuss and analyze the fact that physics is generally losing its ability to captivate students who may possess the potential to enhance the quality of our future in this age of technology. We have tried to investigate the reasons behind this low enrollment in the light of the results of a few surveys with the undergraduate students in different physics courses and in current relevant college programs. It is not an exclusively descriptive issue, so our analysis is a way to delineate the details of the matter leading to the suggestions for future improvements.

physics.soc-ph↗

arXiv2004

Leptonic CP violation in a two parameter model

We further study the "complementary" Ansatz, Tr$(M_ν)$=0, for a prediagonal light Majorana type neutrino mass matrix. Previously, this was studied for the CP conserving case and the case where the two Majorana type CP violating phases were present but the Dirac type CP violating phase was neglected. Here we employ a simple geometric algorithm which enables us to "solve" the Ansatz including all three CP violating phases. Specifically, given the known neutrino oscillation data and an assumed two parameter (the third neutrino mass $m_3$ and the Dirac CP phase $δ$) family of inputs we predict the neutrino masses and Majorana CP phases. Despite the two parameter ambiguity, interesting statements emerge. There is a characteristic pattern of interconnected masses and CP phases. For large $m_3$ the three neutrinos are approximately degenerate. The only possibility for a mass hierarchy is to have $m_3$ smaller than the other two. A hierarchy with $m_3$ largest is not allowed. Small CP violation is possible only near two special values of $m_3$. Also, the neutrinoless double beta decay parameter is approximately bounded as 0.020 eV $<|m_{ee}|<$ 0.185 eV. As a byproduct of looking at physical amplitudes we discuss an alternative parameterization of the lepton mixing matrix which results in simpler formulas. The physical meaning of this parameterization is explained.

hep-ph↗

arXiv1999

Effective Magnetic Moment of Neutrinos in Strong Magnetic Fields

We compute the effective magnetic moment of neutrino in the highly dense and strongly magnetized media. It is shown that this magnetic moment is generated due to the effective mass of neutrino and gives sufficiently high value of the magnetic moment in the core of neutron stars.

hep-ph↗