Articles written in Pramana – Journal of Physics
Volume 40 Issue 6 June 1993 pp 1- Rapid Communication
It is argued with the help of an illustrative model, that the inter species hierarchy among the fermion masses and the quark mixing angles can be accommodated naturally in the standard model with (approximate) flavor democracy provided there are three exactly massless neutrinos and four families of sequential quark-leptons with all members of the fourth family having roughly equal masses. The special problem of light neutrino masses (if any) and possible solutions are also discussed.
Volume 45 Issue S1 October 1995 pp 365-366
Volume 45 Issue S1 October 1995 pp 367-372
Volume 55 Issue 1-2 July 2000 pp 183-193
In this brief review the following topics are discussed:
Direct searches for SUSY in mSUGRA: a brief review of the relevant mass limits, the clean trilepton signal, the hunt for the third generation of sfermions,
Direct searches beyond mSUGRA: search prospects in models with nonuniversal gaugino masses, search prospects in models with nonuniversal scalar masses,
Indirect searches for SUSY: precision electroweak observables and SUSY, ε′/ε and SUSY.
Volume 55 Issue 1-2 July 2000 pp 335-345
Debajyoti Choudhury Rahul Sinha S Arunagiri Gautam Bhattacharyya Debrupa Chakraverty Debajyoti Choudhury Amitava Datta Anindya Datta Aseskrishna Datta Amol Dighe Dilip Kumar Ghosh Anjan Giri Stephen King Anirban Kundu Rukmani Mohanta Biswarup Mukhopadhyaya Sreerup Raychaudhuri Saurabh Rindani Probir Roy DP Roy Sourov Roy AI Sanda Nita Sinha Rahul Sinha K Sridhar H Yamamoto
This report summarises the work done during WHEPP-6 (Institute of Mathematical Sciences, Chennai, India, Jan 3–15, 2000) in Working group on ‘
Volume 60 Issue 2 February 2003 pp 383-394
Amitava Datta K Sridhar K Abe K Agashe R Aleksan B C Allanach S Chakraborti D Choudhury Asesh Krishna Datta Anindya Datta D Ghosh R M Godbole M Guchait K Huitu P Konar A Kundu S Moretti B Mukhopadhyaya S Moretti D P Roy
The activities of the working group including some of the seminars are summarized. The written reports received are included.
Volume 60 Issue 2 February 2003 pp 395-399
B Mukhopadhyaya S Raychudhuri K Agashe B Allanach D Bailin B Brahmachari U Chattopadhyay D Choudhury P Das Amitava Datta Anindya Datta A Djouadi A Giri K Huitu A Kundu U Mahanta S Moretti B Mukhopadhyaya J C Pati A K Ray A Raychaudhuri S Raychaudhuri P Roy N Singh R Vaidya
Volume 63 Issue 6 December 2004 pp 1331-1353
Naba K Mondal Saurabh D Rindani Kaustubh Agashe Pankaj Agrawal B Ananthanarayan Ketevi Assamagan Alfred Bartl Subhendu Chakrabarti Utpal Chattopadhyay Debajyoti Choudhury Eung-Jin Chun Prasanta K Das Siba P Das Amitava Datta Sukanta Dutta Jeff Forshaw Thomas Gajdosik Dilip K Ghosh Rohini M Godbole Monoranjan Guchait Partha Konar Sabine Kraml Manas Maity Kajari Mazumdar Naba K Mondai Biswarup Mukhopadhyaya Meenakshi Narain Santosh K Rai Sreerup Raychaudhuri Saurabh D Rindani D P Roy Seema Sharma Ritesh K Singh Rishikesh Vaidya
This is a summary of the projects undertaken by the working group I on high energy and collider physics.
Volume 63 Issue 6 December 2004 pp 1355-1357
Volume 89 Issue 4 October 2017 Article ID 0054 Special Issue
The searches for supersymmetry at the Large Hadron Collider (LHC) have so far yielded only null results and have considerably tightened the bounds on the sparticle masses. This has generated some skepticism in the literature regarding the ‘naturalness of SUSY’ which qualitatively requires some sparticles to be relatively light. Re-examining some of the bounds from LHC searches, it is argued with specific examples that the above skepticism is a red herring because (i) a quantitative and universally accepted definition of ‘naturalness’ is not available and (ii) even if some conventional definitions of naturalness is accepted at their face values, the alleged tension with the apparently stringent LHC bounds wither away once the strong assumptions, by no means compelling, underlying such bounds are relaxed.
Volume 93 | Issue 6
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