6 papers · 1 filter
Inverse beta-decay in magnetic fields
Kaushik Bhattacharya, Palash B. Pal
We calculate the cross section of the inverse beta decay process, , in a magnetic field which is much smaller than . Using exact solutions of the Dirac equat…
Photogravitational processes
Jose F. Nieves, Palash B. Pal
In the linearized theory of gravity coupled to the electromagnetic field, we calculate the cross sections of two processes in which both the gravitational and electromagnetic inter…
A reincarnation of R-parity
Palash B. Pal
In supersymmetric theories, R-parity is defined in a way such that it does not commute with the space-time symmetries. We show that, in general sypersymmetric models, one can defin…
What is the Equivalence Theorem Really?
Palash B Pal
The precise statement of the equivalence theorem, between the longitudinally polarized states of a massive gauge boson and the corresponding goldstone mode, is discussed when the a…
Loop-Induced Majoronic Decay of Neutrinos:
Darwin Chang, Jiang Liu, Palash B. Pal
In models where the suppression of the tree level couplings of fermions with Goldstone bosons is not protected by symmetry, the loop-induced couplings can in general dominate over…
Neutrino Interactions in Matter :
Palash B Pal
If a fermion is travelling through a medium, it can have matter-induced magnetic and electric dipole moments. These contributions conserve chirality, and can be non-vanishing even…