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28 papers · 2 filters
The shear viscosity of two-flavor crystalline color superconducting quark matter
Sreemoyee Sarkar, Rishi Sharma
We present the first calculation of the shear viscosity for two-flavor plane wave (FF) color superconducting quark matter. This is a member of the family of crystalline color super…
Selection Rule for Enhanced Dark Matter Annihilation
Anirban Das, Basudeb Dasgupta
We point out a selection rule for enhancement (suppression) of odd (even) partial waves of dark matter coannihilation or annihilation using Sommerfeld effect. Using this, the usual…
Search for bottom squarks in the baryon-number violating MSSM
Debjyoti Bardhan, Amit Chakraborty, Debajyoti Choudhury +2
We consider a scenario of Minimal Supersymmetric Standard Model (MSSM) with -parity violation, where the lightest supersymmetric particle (LSP) is the lighter sbottom $(\tilde b…
A closer look at the and anomalies
Debjyoti Bardhan, Pritibhajan Byakti, Diptimoy Ghosh
The measurement of (), the ratio of the branching fraction of to that of $\overline{B} \to D l \barν_l (…
Augmenting Collider Searches and Enhancing Discovery Potentials through Stochastic Jet Grooming
Tuhin S. Roy, Arun M. Thalapillil
The jet Trimming procedure has been demonstrated to greatly improve event reconstruction in hadron collisions, by mitigating contamination due initial state radiation, multiple int…
Fast neutrino flavor conversions near the supernova core with realistic flavor-dependent angular distributions
Basudeb Dasgupta, Alessandro Mirizzi, Manibrata Sen
It has been recently pointed out that neutrino fluxes from a supernova can show substantial flavor conversions almost immediately above the core. Using linear stability analyses an…
Diphoton Signal of light pseudoscalar in NMSSM at the LHC
Monoranjan Guchait, Jacky Kumar
We explore the detection possibility of light pseudoscalar Higgs boson in the next-to-minimal supersymmetric Standard Model(NMSSM) at the LHC with the center of mass energy, $\sqrt…
Distinguishing between MSSM and NMSSM through processes
Jacky Kumar, Michael Paraskevas
We study deviations between MSSM and -invariant NMSSM, with respect to their predictions in processes. We find that potentially significant effects arise either from t…
Dissecting new physics models through kinematic edges
Abhishek M. Iyer, Ushoshi Maitra
Kinematic edges in the invariant mass distributions of different final state particles are typically a signal of new physics. In this work we propose a scenario wherein these edges…
A Higgs in the Warped Bulk and LHC signals
F. Mahmoudi, U. Maitra, N. Manglani +1
Warped models with the Higgs in the bulk can generate light Kaluza-Klein (KK) Higgs modes consistent with the electroweak precision analysis. The first KK mode of the Higgs (h_{1})…
SUSY Dark Matter in Universal and Nonuniversal Gaugino Mass Models
D. P. Roy
We review the phenomenology of SUSY dark matter in various versions of MSSM, with universal and nonuniversal gaugino masses at the GUT scale. We start with the universal case (CMSS…
Study of MSSM heavy Higgs bosons decaying into charginos and neutralinos
Rahool K. Barman, Biplob Bhattacherjee, Amit Chakraborty +1
A multitude of searches have already been performed by the ATLAS and CMS collaborations at the LHC to probe the heavy Higgses of the Minimal Supersymmetric Standard Model (MSSM) th…
Chasing New Physics in Stacks of Soft Tracks
Amit Chakraborty, Sabyasachi Chakraborty, Tuhin S. Roy
In this letter we introduce a new variable , namely the number of tracks associated with the primary vertex, which are not parts of reconstructed objects such as jets/isolated l…
Probing Higgs-radion mixing in warped models through complementary searches at the LHC and the ILC
Mariana Frank, Katri Huitu, Ushoshi Maitra +1
We consider the Higgs-radion mixing in the context of warped space extra dimensional models with custodial symmetry and investigate the prospects of detecting the mixed radion. Cus…
Search for the sterile neutrino mixing with the ICAL detector at INO
S. P. Behera, Anushree Ghosh, Sandhya Choubey +3
The study has been carried out on the prospects of probing the sterile neutrino mixing with the magnetized Iron CALorimeter (ICAL) at the India-based Neutrino Observatory (INO), us…
The top threshold effect in the production at the LHC
Shashikant R. Dugad, Pankaj Jain, Subhadip Mitra +2
We compute the top quark threshold contributions to the production at the LHC. They appear when the invariant mass of the photon pair, just exceeds two times the mass…
Self-induced temporal instability from a neutrino antenna
Francesco Capozzi, Basudeb Dasgupta, Alessandro Mirizzi
It has been recently shown that the flavor composition of a self-interacting neutrino gas can spontaneously acquire a time-dependent pulsating component during its flavor evolution…
A Cautionary Tale of Mis-measured Tails from Bias
Adam Martin, Tuhin S. Roy
Jet substructure techniques such as subjet -asymmetry, mass-drop, and grooming have become powerful and widely used tools in experimental searches at the LHC. While these tool…
Exploring the Inert Doublet Model through the dijet plus missing transverse energy channel at the LHC
P. Poulose, Shibananda Sahoo, K. Sridhar
In this study of the Inert Doublet Model (IDM), we propose that the dijet + missing transverse energy channel at the Large Hadron Collider (LHC) will be an effective way of searchi…
A QCD analysis of CMS inclusive differential Z production data at sqrt(s) = 8 TeV
Rajdeep M Chatterjee, Monoranjan Guchait, Ringaile Placakyte
The parton distribution functions (PDFs) of the proton are one of the essential ingredients to describe physics processes at hadron colliders. The Z boson production data at the LH…
The 750 GeV diphoton resonance as an sgoldstino: a reappraisal
Debjyoti Bardhan, Pritibhajan Byakti, Diptimoy Ghosh +1
Among the various explanations of the possible 750 GeV diphoton resonance, the possibility of it being an sgoldstino is an attractive one, as it is related to the spontaneous break…
Estimating transport coefficients in hot and dense quark matter
Paramita Deb, Guru Prakash Kadam, Hiranmaya Mishra
We compute the transport coefficients, namely, the coefficients of shear and bulk viscosity as well as thermal conductivity for hot and dense quark matter. The calculations are per…
Photons, Photon Jets and Dark Photons at 750 GeV and Beyond
Basudeb Dasgupta, Joachim Kopp, Pedro Schwaller
In new physics searches involving photons at the LHC, one challenge is to distinguish scenarios with isolated photons from models leading to "photon jets". For instance, in the con…
Pomeron pole plus grey disk model: real parts, inelastic cross sections and LHC data
S. M. Roy
I propose a two component analytic formula for scattering at energies ,where $…