F. A. Khan
A5004973674- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Multiferroics and related materials
- Magnetic Properties and Synthesis of Ferrites
- Magnetic properties of thin films
- Particle Detector Development and Performance
- Magnetic and transport properties of perovskites and related materials
- Nanofluid Flow and Heat Transfer
- Metallic Glasses and Amorphous Alloys
- Heat Transfer Mechanisms
- Magnetic Properties and Applications
- Fluid Dynamics and Turbulent Flows
- Magnetic Properties of Alloys
- Electromagnetic wave absorption materials
- Neutrino Physics Research
- Magneto-Optical Properties and Applications
- Advanced Thermoelectric Materials and Devices
- Radiation Detection and Scintillator Technologies
- Advanced Condensed Matter Physics
- Theoretical and Computational Physics
- Ferroelectric and Piezoelectric Materials
- Cosmology and Gravitation Theories
- Heat Transfer and Optimization
- Crystallization and Solubility Studies
Université Libre de Bruxelles
2023-2025
Office for Students
2024
Institute of High Energy Physics
2024
A. Alikhanyan National Laboratory
2024
University of Antwerp
2024
European Organization for Nuclear Research
2022-2024
Bangladesh University of Engineering and Technology
2014-2023
SUNY Upstate Medical University
2022
Quaid-i-Azam University
2013-2021
University of Leeds
2015-2017
Abstract This paper describes the Combine software package used for statistical analyses by CMS Collaboration. The package, originally designed to perform searches a Higgs boson and combined analysis of those searches, has evolved become tool presently in majority measurements performed It is not specific experiment, this intended serve as reference users outside Collaboration, providing an outline most salient features capabilities. Readers are provided with possibility run reproduce...
The influence of dipolar interaction in a frozen ferrofluid has been experimentally studied. consisted particles $\ensuremath{\gamma}$- ${\mathrm{Fe}}_{2}$${\mathrm{O}}_{3}$ with mean diameter 70 \AA{}. Four samples volume concentration magnetic ranging from 0.03% to 17% have investigated. relaxation the most concentrated particle system shows typical spin glass dynamics at low temperature, e.g., depends on time spent constant temperature before applying field---the ages. diluted sample...
In this article, Williamson fluid flow and heat transfer over a stretching cylinder is discussed. The thermal conductivity assumed to be vary linearly with temperature. Heat generation/absorption effects are also taken into account. Modeled partial differential equations converted ordinary form by using appropriate transformations. Shooting method in conjunction Runge-Kutta-Fehlberg used find the solution of problem. Moreover, different parameters γ, λ, ϵ, β Pr on velocity temperature...
This article presents the two-dimensional flow of MHD hyperbolic tangent fluid with nanoparticles towards a stretching surface. The mathematical modelling current analysis yields nonlinear set partial differential equations which then are reduce to ordinary by using suitable scaling transforms. Then resulting solved shooting technique. behaviour involved physical parameters (Weissenberg number We, Hartmann M, Prandtl Pr, Brownian motion parameter Nb, Lewis Leand thermophoresis Nt) on...
Structural, elastic and cation distribution properties have been investigated on stoichiometric non-stoichiometric cobalt ferrites. Crystal structure, formation of spinel type ferrite, chemical bonding, distribution, thermal two series Cr
Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of sqrt[s]=13 TeV proton-proton collisions collected by the CMS experiment and corresponding to integrated luminosity 36.3 fb^{-1}. The distributions consistent with trends simulation reveal key features strong interaction: confinement asymptotic freedom. By comparing ratio three- two-particle energy correlator theoretical calculations resum collinear...
A bstract search for long-lived heavy neutral leptons (HNLs) using proton-proton collision data corresponding to an integrated luminosity of 138 fb − 1 collected at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV with the CMS detector CERN LHC is presented. Events are selected a charged lepton originating from primary vertex associated interaction, as well second and hadronic jet secondary that corresponds...
The aim of this article is to investigate the heat and mass diffusion (Cattaneo–Christov model) upper convected Maxwell nanomaterials passed by a linear stretched surface (slip surface) near stagnation point region. Convocational Fourier's Fick's laws are employed phenomena. Using similarity transformations, governing PDEs rendered into ODEs along with boundary conditions. value problem solved numerically using RK-4 method shooting technique (Cash Karp). effects embedded parameters, namely...
A bstract search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV is presented. The were collected by the CMS experiment CERN LHC and correspond to an integrated luminosity 138 fb − 1 . Events with three charged (electrons, muons, hadronically decaying tau leptons) are selected, corresponding HNL production in...
This paper reports a series of investigations on the frequency and temperature dependent intrinsic electric properties manganese doped cobalt ferrite nanoparticles. The investigated samples were prepared via solid state reaction route using planetary ball milling technique. XRD patterns confirm their crystallinity single phase spinel structure. Field Emission Electron Scanning Microscopic (FE-SEM) micrographs show agglomerated particle with nearly spherical shape. estimated lattice constant...
Purpose The purpose of the current flow configurations is to bring attention thermophysical aspects magnetohydrodynamics (MHD) Williamson nanofluid under effects Joule heating, nonlinear thermal radiation, variable coefficient and activation energy past a rotating stretchable surface. Design/methodology/approach A mathematical model examined study heat mass transport analysis steady MHD fluid Impact with newly introduced diffusion at equation considered. phenomenon modeled by using highly...
The exchange bias (EB) effect has been observed in magnetic Bi0.9Gd0.1Fe0.9Ti0.1O3 nanoparticles. influence of field cooling on the also investigated. magnitude (HEB) increases with field, showing that strength is tunable by cooling. HEB values are found to be dependent temperature. This magnetically obtained at temperatures up 250 K nanoparticles may worthwhile for potential applications.
The effect of Er content on sol-gel derived CoFe2−xErxO4, (x = 0.00, 0.01, 0.03, 0.05) nanoparticles was investigated by XRD, FTIR, SEM, Mössbauer spectroscopy, magnetic and dielectric measurements. formation cubic spinel structure the presence molecular bonding functional groups were confirmed XRD FTIR spectroscopy. average crystallite size is reduced from 61 to 18 nm with increase content. decrease in due suppression grain growth upon Er3+ occupation at octahedral site. SEM study revealed...
Abstract Data analyses in particle physics rely on an accurate simulation of collisions and a detailed detector effects to extract knowledge from the recorded data. Event generators together with geant -based detectors are used produce large samples simulated events for analysis by LHC experiments. These simulations come at high computational cost, where reconstruction algorithms have largest CPU demands. This article describes how machine-learning (ML) techniques reweight obtained given set...
A search is presented for an extended Higgs sector with two new particles, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>X</a:mi></a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>ϕ</c:mi></c:math>, in the process <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>X</e:mi><e:mo stretchy="false">→</e:mo><e:mi>ϕ</e:mi><e:mi>ϕ</e:mi><e:mo stretchy="false">→</e:mo><e:mo...
A bstract The first measurement of the inclusive and normalised differential cross sections single top quark production in association with a W boson proton-proton collisions at centre-of-mass energy 13.6 TeV is presented. data were recorded CMS detector LHC 2022, correspond to an integrated luminosity 34.7 fb − 1 . analysed events contain one muon electron final state. For measurement, multivariate discriminants exploiting kinematic properties are used separate signal from dominant...
A bstract search for dark matter (DM) particles produced in association with bottom quarks is presented. The analysis uses proton-proton collision data at a center-of-mass energy of $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV, corresponding to an integrated luminosity 138 fb − 1 . performed final state large missing transverse momentum and pair jets originating from quarks. No significant excess...
A bstract search is presented for a heavy resonance decaying into Z boson and Higgs (H) boson. The analysis based on data from proton-proton collisions at centre-of-mass energy of 13 TeV corresponding to an integrated luminosity 138 fb − 1 , recorded with the CMS experiment in years 2016–2018. Resonance masses between 1.4 5 are considered, resulting large transverse momenta H bosons. Final states that result decays pairs electrons, muons, or neutrinos considered. reconstructed as single...
A bstract An analysis of the production a Higgs boson (H) in association with top quark-antiquark pair ( $$ \textrm{t}\overline{\textrm{t}}\textrm{H} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>t</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> <mml:mi>H</mml:mi> </mml:math> ) or single quark (tH) is presented. The decay into bottom (H → \textrm{b}\overline{\textrm{b}} <mml:mi>b</mml:mi> targeted, and three different final states decays are considered, defined by...