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22 papers · 2 filters
Model for Polarized and Unpolarized Parton Density Functions in the Nucleon
R. S. Bhalerao, N. G. Kelkar, B. Ram
We present a physical model for polarized and unpolarized structure functions and parton density functions (PDFs) of the proton and the neutron. It reproduces the data on F_2^p(x,Q…
Large extra dimensions and dijet production in collisions
Dilip Kumar Ghosh, Prakash Mathews, P. Poulose +1
We have studied dijet production in collisions with a view to probing the physics of large extra dimensions. The exchange of virtual spin-2 Kaluza-Klein excitations is found t…
Detecting heavy charged Higgs bosons at the LHC with triple b-tagging
S. Moretti, D. P. Roy
We investigate the charged Higgs boson signal at the LHC using its dominant production and decay modes with triple b-tagging, i.e. , followe…
Seeking TeV-Scale Quantum Gravity at an collider
Dilip Kumar Ghosh, P. Poulose, K. Sridhar
Theories with large extra compact dimensions predict exciting phenomenological consequences at the TeV scale. Such theories can, consequently, be tested/verified in experiments at…
Signature of Charged to Neutral Higgs Boson Decay at the LHC in SUSY Models
Manuel Drees, Monoranjan Guchait, D. P. Roy
We study the signature of decay into at the LHC in SUSY models. It has only marginal viability in the MSSM. But in the singlet extensions like the NMSSM one can have…
A Minimal See-Saw Model for Hierarchical Neutrino Masses with Large Mixing
D. P. Roy
The atmospheric and solar neutrino oscillation data suggest hierarchical neutrino masses with at least one large mixing. The simplest see-saw models for reconciling the two feature…
Effects of SO(10) D-Terms on SUSY Signals at the Tevatron
Amitava Datta, Aseshkrishna Datta, Manuel Drees +1
We study signals for the production of superparticles at the Tevatron in supergravity scenarios based on the Grand Unified group SO(10). The breaking of this group introduces extra…
Production and Equilibration of the Quark-Gluon Plasma with Chromoelectric Field and Minijets
R. S. Bhalerao, Gouranga C. Nayak
Production and equilibration of quark-gluon plasma are studied within the color flux-tube model, at the RHIC and LHC energies. Non-Abelian relativistic transport equations for quar…
Detecting Heavy Charged Higgs Bosons at the LHC with Four b-Quark Tags
D. J. Miller, S. Moretti, D. P. Roy +1
We investigate the signature of a heavy charged Higgs boson of the Minimal Supersymmetric Standard Model in the lepton plus multi-jet channel at the Large Hadron Collider with four…
Searching for R-Parity Violation at Run-II of the Tevatron
B. Allanach, H. Baer, S. Banerjee +23
We present an outlook for possible discovery of supersymmetry with broken R-parity at Run II of the Tevatron. We first present a review of the literature and an update of the exper…
The Hadronic Tau Decay Signature of a Heavy Charged Higgs Boson at LHC
D. P. Roy
The hadronic tau decay channel offers by far the best signature for heavy charged Higgs boson search at the LHC in the large region. By exploiting the distinct polarization…
Probing Large Extra Dimensions Using Top Production in Photon-Photon Collisions
Prakash Mathews, P. Poulose, K. Sridhar
Theories with large extra dimensions predict an infinite tower of Kaluza-Klein states in the 1 TeV range, which can consequently have significant implications for experimental obse…
Testing TeV Scale Quantum Gravity using Dijet Production at the Tevatron
Prakash Mathews, Sreerup Raychaudhuri, K. Sridhar
Dijet production at the Tevatron including effects of virtual exchanges of spin-2 Kaluza-Klein modes in theories with large extra dimensions is considered. The experimental dijet m…
Search for R-parity Violating SUSY in Run 2 at D0
S. Banerjee, N. K. Mondal, V. S. Narasimham +1
We present a study of sensitivity of the R-parity violating SUSY searches with the upgraded D0 detector in Run II of the Fermilab Tevatron, within a SUGRA framework. We considered…
SUSY Higgs at the LHC: Large stop mixing effects and associated production
G. Belanger, F. Boudjema, K. Sridhar
We revisit the effect of the large stop mixing on the decay and production of the lightest SUSY Higgs at the LHC. We stress that whenever the inclusive 2-photon signature is substa…
Constraining Large Extra Dimensions Using Dilepton Data from the Tevatron Collider
Ambreesh K. Gupta, Naba K. Mondal, Sreerup Raychaudhuri
We use the invariant mass distribution of Drell-Yan dileptons as measured by the CDF and D0 Collaborations at the Fermilab Tevatron and make a careful analysis to constrain Kaluza-…
Signals for R-parity-violating Supersymmetry at a 500 GeV e+ e- Collider
Dilip Kumar Ghosh, Rohini M. Godbole, Sreerup Raychaudhuri
We investigate the production of charginos and neutralinos at a 500 GeV e^+e^- collider (NLC) and study their decays to the lightest neutralino, which then decays into multi-fermio…
Neutrino Mass and Osciallation: An Introductory Review
D. P. Roy
After a brief introduction to neutrino mass via the see-saw model I discuss neutrino mixing and oscillation, first in vacuum and then its matter enhancement. Then the solar and atm…
Proposal to look for an up/down asymmetry in atmospheric neutrinos beyond Multi-GeV region with existing experimental data
Shashikant R. Dugad, Francesco Vissani
We discuss a possible test of neutrino oscillation hypothesis by proposing the combined analysis of high energy atmospheric neutrino induced muon events that have been detected aro…
Issues in Quarkonium Production
K. Sridhar
In this talk, I start with a brief introduction to Non-Relativistic QCD (NRQCD) and its applications to quarkonium physics. This theory has provided a consistent framework for the…
A new proposal for glueball exploration in hard gluon fragmentation
Probir Roy, K. Sridhar
An unambiguous identification of glueballs in experiments will be of great significance, because their existence is an important test of QCD. The proposal, advanced here, is to exp…
J/psi+gamma production at the LHC
Prakash Mathews, K. Sridhar, Rahul Basu
The associated production of J/psi + gamma at the LHC is studied within the NRQCD framework. The signal we focus on is the production of a J/psi and an isolated photon produced bac…