M K Parida
Articles written in Pramana – Journal of Physics
Volume 45 Issue S1 October 1995 pp 209-228
We discuss recent contributions on threshold effects in grand unfiied theories including minimal SUSY SU (5), non-SUSY modifications of the grand desert in SU(5) and SO(10), and SO(10) with single intermediate symmetires. Consequences of theorems on vanishing GUT-scale corrections to sin2 θw in SO(10) with SU(2)
Volume 51 Issue 1-2 July 1998 pp 305-311
Debajyoti Choudhury Saurabh D Rindani B Ananthanarayan K R S Balaji Debajyoti Choudhury Manuel Drees Shashikant Dugad Gautam Dutta Sukanta Dutta Naveen Gaur Ambar Ghosal Walter Grimus Ernest Ma Shubhendra Mohanty P N Pandita M K Parida Subhendu Rakshit Saurabh D Rindani D P Roy Probir Roy Sarira Sahu N N Singh Sudhir K Vempati Francesco Vissani
This report summarises the activities of the working group on ‘Physics beyond the Standard Model’. The results of investigations in incorporating
Volume 62 Issue 3 March 2004 pp 643-646
Starting with the unification hypothesis of mixings of quarks and leptons and small quark-like mixings at the see-saw scale, we find that two large mixings for νe —ν
Volume 62 Issue 3 March 2004 pp 647-650
Neutrino-mass textures proposed at high scales are known to be unstable against radiative corrections especially for nearly degenerate mass eigenvalues. We find a mechanism in a class of gauge models including 2HDM where the RG constraints can be evaded. Consequently, a high-scale texture can match the low-energy data or be reproduced at low energies.
Volume 63 Issue 6 December 2004 pp 1391-1405
Srubabati Goswami Raghavan Rangarajan K Agashe A Bandyopadhyay K Bhattacharya B Brahmachari C Burgess E J Chun D Choudhury P K Das A Dighe R Godbole S Goswami N Gupta M Kaplinghat D Indumathi J Forshaw Y Y Keum B Layek D Majumdar N Mahajan P Mehta R N Mohapatra N Mondai S More Y Nir S Pakvasa M K Parida M Ravikumar G Rajasekaran P Ramadevi R Rangarajan S D Rindani D P Roy P Roy N Sahu A Samanta Y Shadmi A M Srivastava S Uma Sankar R Vaidya U Yajnik
This is the report of neutrino and astroparticle physics working group at WHEPP-8. We present the discussions carried out during the workshop on selected topics in the above fields and also indicate progress made subsequently. The neutrino physics subgroup studied the possibilities of constraining neutrino masses, mixing and CPT violation in lepton sector from future experiments. Neutrino mass models in the context of Abelian horizontal symmetries, warped extra dimensions and in the presence of triplet Higgs were studied. Effect of threshold corrections on radiative magnification of mixing angles was investigated. The astroparticle physics subgroup focused on how various particle physics inputs affect the CMBR fluctuation spectrum, and on brane cosmology. This report also contains an introduction on how to use the publicly available code CMBFAST to calculate the CMBR fluctuations.
Volume 72 Issue 1 January 2009 pp 269-275
Sandhya Choubey D Indumathi S Agarwalla A Bandyopadhyay G Bhattacharyya E J Chun B Dasgupta A Dighe P Ghoshal A K Giri S Goswami M Hirsch T Kajita M Kaplinghat H S Mani R Mohanta M V N Murthy S Pakvasa M K Parida G Rajasekaran S Ray W Rodejohann P Roy S Uma Sankar T Schwetz N Sinha
This is the report of the neutrino physics working group at WHEPP-X. We summarize the problems selected and discussed at the workshop and the papers which have resulted subsequently.
Volume 96, 2022
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode