Sibaji Raha

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BACKGROUND There is an urgent need for an improved understanding of the sources, distributions and properties of atmospheric aerosol in order to control the atmospheric pollution over northeastern Himalayas where rising anthropogenic interferences from rapid urbanization and development is becoming an increasing concern. METHODOLOGY/PRINCIPAL FINDINGS An(More)
a Physics Department, Bose Institute, 93/1, A.P.C. Road, Calcutta 700 009, INDIA b Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Calcutta 700 064, INDIA c Theory Group, TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C. V6T 2A3, CANADA d Nuclear Theory Group, Brookhaven National Laboratory, Bldg. 510A, Upton, Long Island, New York 11973-5000, USA e Saha(More)
We apply the momentum integrated Boltzmann transport equation to study the time evolution of various quark flavours in the central region of ultra-relativistic heavy ion collisions. The effects of thermal masses for quarks and gluons are incorporated to take into account the in-medium properties of these ingredients of the putative quark gluon plasma. We(More)
The Jacobi polynomial has been advocated by many authors as a useful tool to evolve non-singlet structure functions to higher Q2. In this work, it is found that the convergence of the polynomial sum is not absolute, as there is always a small fluctuation present. Moreover, the convergence breaks down completely for large N . [PACS : 12.38.-t, 12.38.Bx,(More)
There have been several reports of exotic nuclear fragments, with highly unusual charge to mass ratio, in cosmic ray experiments. Although there exist experimental uncertainties which make them, at best, only candidate ”exotic” events, it is important to understand what they could be, if they are eventually confirmed. Among other possible explanations, some(More)