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56 papers · 1 filter
Nobel Leptons
K. V. L. Sarma
The 1995 Nobel Prize in Physics is shared equally by the American physicists Frederick J. Reines and Martin L. Perl for their pioneering experimental contributions to lepton physic…
Search for Right-Handed Bosons and Heavy in Collisions at 1.8 TeV
S. Abachi
We report on a search for right-handed bosons (). We used data collected with the DØ detector at the Fermilab Tevatron collider at 1.8 TeV to search f…
On the Spectral Slopes of Hard X-ray Emission from Black Hole Candidates
Ken Ebisawa, Lev G. Titarchuk, Sandip K. Chakrabarti
Most black hole candidates exhibit characteristic power-law like hard X-ray emission above 10 keV. In the {\em high state}, in which 2 -- 10 keV luminosity is relatively hig…
Search for Production via Trilepton Final States in collisions at TeV
S. Abachi
We have searched for associated production of the lightest chargino, , and next-to-lightest neutralino, , of the Minimal Supersymmetric Standard M…
Black Hole Geometry around an Elementary BPS String State
Gautam Mandal, Spenta R. Wadia
We probe the geometry around an elementary BPS (EBPS) state in heterotic string theory compactified on a six-torus by scattering a massless scalar off it and comparing with the cor…
Two Scale Model for Aggregation and Etching
George C. John, Vijay A. Singh
We propose a dual scale drift-diffusion model for interfacial growth and etching processes. The two scales are: (i) a depletion layer width surrounding the aggregate and (ii) a dri…
Orbifolds of M-theory
Keshav Dasgupta, Sunil Mukhi
We study Z2-orbifolds of 11-dimensional M-theory on tori of various dimensions. The most interesting model (besides the known S1/Z2 case) corresponds to T5/Z2, for which we argue t…
Nature of singularity in Einstein-massless scalar theory
K. S. Virbhadra, S. Jhingan, P. S. Joshi
We study the static and spherically symmetric exact solution of the Einstein-massless scalar equations given by Janis, Newman and Winicour. We find that this solution satisfies the…
Degrees of freedom in two dimensional string theory
Sumit R. Das
We discuss two issues regarding the question of degrees of freedom in two dimensional string theory. The first issue relates to the classical limit of quantum string theory. In the…
J/psi production via fragmentation at HERA
R. M. Godbole, D. P. Roy, K. Sridhar
We compute the contributions to large- production at HERA coming from fragmentation of gluons and charm quarks. We find that the charm quark fragmentation contribution d…
Multiparametric and coloured extensions of the quantum group and the Yangian algebra through a symmetry transformation of the Yang-Baxter equation
B. Basu-Mallick, P. Ramadevi, R. Jagannathan
Inspired by Reshetikhin's twisting procedure to obtain multiparametric extensions of a Hopf algebra, a general `symmetry transformation' of the `particle conserving' -matrix is…
Notes on a singular Landau-Ginzburg family
Debashis Ghoshal
We study some properties of a singular Landau-Ginzburg family characterized by the multi-variable superpotential . We will…
Singlet-Higgs-Boson Signals at Hadron Colliders
Anindya Datta, Amitava Raychaudhuri, Sreerup Raychaudhuri +1
Many extensions of the Standard Model include singlet higgs bosons, , and also vectorlike fermions which couple to it. The production and detection pos…
Parabolic Higgs bundles and Teichmüller spaces for punctured surfaces
Indranil Biswas, Pablo Gastesi, Suresh Govindarajan
In this paper we study the relation between parabolic Higgs bundles and irreducible representations of the fundamental group of punctured Riemann surfaces established by Simpson. W…
Jet Production via Strongly-Interacting Color-Singlet Exchange in Collisions
S. Abachi
A study of the particle multiplicity between jets with large rapidity separation has been performed using the DØdetector at the Fermilab Tevatron Collider operating at $…
Rotating Black Holes which Saturate a Bogomol'nyi Bound
Gary Horowitz, Ashoke Sen
We construct and study the electrically charged, rotating black hole solution in heterotic string theory compactified on a dimensional torus. This black hole is characteri…
Gamow-Teller strength distributions for nuclei in pre-supernova stellar cores
F. K. Sutaria, A. Ray
Electron-capture and -decay of nuclei in the core of massive stars play an important role in the stages leading to a type II supernova explosion. Nuclei in the f-p shell are par…
Studies of Topological Distributions of the Three- and Four-Jet Events in $\pp$ Collisions at GeV with the DØDetector
S. Abachi
The global topologies of inclusive three-- and four--jet events produced in $\pp$ interactions are described. The three-- and four--jet events are selected from data recorded by th…
Superconductor-Insulator Transition in a Disordered Electronic System
Nandini Trivedi, Richard T. Scalettar, Mohit Randeria
We study an electronic model of a 2D superconductor with onsite randomness using Quantum Monte Carlo simulations. The superfluid density is used to track the destruction of superco…
The Computational Complexity of Symbolic Dynamics at the Onset of Chaos
Porus Lakdawala
In a variety of studies of dynamical systems, the edge of order and chaos has been singled out as a region of complexity. It was suggested by Wolfram, on the basis of qualitative b…
Dual Pairs of Type II String Compactification
Ashoke Sen, Cumrun Vafa
Using a -duality symmetry of type II compactification on represented by triality action on the -duality group, and applying the adiabatic argument we construct dual pai…
Folds, Bosonization and non-triviality of the classical limit of 2D string theory
Sumit R. Das, Samir D. Mathur
In the 1-dimensional matrix model one identifies the tachyon field in the asymptotic region with a nonlocal transform of the density of fermions. But there is a problem in relating…
Sharpening up the Charged Higgs Boson Signature using Tau Polarization at LHC
Sreerup Raychaudhuri, D. P. Roy
The opposite states of the polarization resulting from the charged Higgs boson and the boson decays can be exploited to enhance the signal in the inclusive 1-prong…
Some results on Teichmüller spaces of Klein surfaces
Pablo Arés Gastesi
This paper contains some results about Teichmüller spaces of non-orientable surfaces (Klein surfaces). We prove several theorems giving isomorphisms between deformation spaces of K…