Md. Al-Amin Khandaker
A5053358368- Quantum Chromodynamics and Particle Interactions
- Nuclear physics research studies
- Cryptography and Residue Arithmetic
- Particle physics theoretical and experimental studies
- Coding theory and cryptography
- High-Energy Particle Collisions Research
- Cryptography and Data Security
- Chaos-based Image/Signal Encryption
- Cryptographic Implementations and Security
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Astronomical and nuclear sciences
- Polynomial and algebraic computation
- Advanced Numerical Analysis Techniques
- Algebraic Geometry and Number Theory
- Atomic and Molecular Physics
- Molecular Spectroscopy and Structure
- Advanced Wireless Communication Techniques
- Fluorine in Organic Chemistry
- Chemical Reactions and Isotopes
- X-ray Spectroscopy and Fluorescence Analysis
- Laser and Thermal Forming Techniques
- Cooperative Communication and Network Coding
- Quantum, superfluid, helium dynamics
- Error Correcting Code Techniques
Petersburg Nuclear Physics Institute
2020
Kurchatov Institute
2020
Okayama University
2016-2019
Norfolk State University
1997-2018
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2018
Idaho State University
2014
University of Maryland, College Park
1990-2000
Virginia Tech
1996
Brookhaven National Laboratory
1996
Los Alamos National Laboratory
1992
Intensive theoretical and experimental efforts over the past decade have aimed at explaining discrepancy between data for proton electric to magnetic form factor ratio, G(E)/G(M), obtained separately from cross section polarization transfer measurements. One possible explanation this difference is a two-photon-exchange contribution. In an effort search effects beyond one-photon-exchange or Born approximation, we report measurements of observables in elastic H(e[over →],e(')p[over →])...
High-statistics measurements of differential cross sections and recoil polarizations for the reaction $\gamma p \rightarrow K^+ \Sigma^0$ have been obtained using CLAS detector at Jefferson Lab. We cover center-of-mass energies ($\sqrt{s}$) from 1.69 to 2.84 GeV, with an extensive coverage in $K^+$ production angle. Independent were made $K^{+}p\pi^{-}$($\gamma$) $K^{+}p$($\pi^-, \gamma$) final-state topologies, found exhibit good agreement. Our show agreement earlier CLAS, SAPHIR LEPS...
The spin structure functions of the proton and deuteron were measured during EG4 experiment at Jefferson Lab in 2006. Data collected for longitudinally polarized electron scattering off ${\mathrm{NH}}_{3}$ ${\mathrm{ND}}_{3}$ targets, ${Q}^{2}$ values as small 0.012 0.02 ${\mathrm{GeV}}^{2}$, respectively, using CEBAF Large Acceptance Spectrometer. This is archival paper that summarizes previously reported results ${g}_{1}$, ${A}_{1}{F}_{1}$, their moments...
Exclusive neutral-pion electroproduction ($ep\to e^\prime p^\prime \pi^0$) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections $d^4\sigma/dtdQ^2dx_Bd\phi_\pi$ structure functions $\sigma_T+\epsilon\sigma_L, \sigma_{TT}$ $\sigma_{LT}$ as of $t$ were obtained over wide range $Q^2$ $x_B$. The data are compared Regge handbag theoretical calculations. Analyses in both frameworks find that large dominance transverse processes is necessary...
We report on the first measurement of beam-spin asymmetry in exclusive process coherent deeply virtual Compton scattering off a nucleus. The experiment uses 6 GeV electron beam from Continuous Electron Beam Accelerator Facility (CEBAF) accelerator at Jefferson Lab incident pressurized ^{4}He gaseous target placed front CEBAF Large Acceptance Spectrometer (CLAS). scattered is detected by CLAS and photon dedicated electromagnetic calorimeter forward angles. To ensure exclusivity process,...
We have measured the moment ALUsinϕ corresponding to polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering. is a twist-3 quantity providing information about quark-gluon correlations. Data were taken with CLAS Spectrometer at Jefferson Lab using 5.498 GeV longitudinally beam and an unpolarized liquid hydrogen target. All three pion channels (π+, π0 π−) simultaneously over large range of kinematics within virtuality Q2≈ 1.0–4.5 GeV2. The observable was better than...
We have measured beam-spin asymmetries to extract the sinϕ moment A_{LU}^{sinϕ} from hard exclusive e[over →]p→e^{'}nπ^{+} reaction above resonance region, for first time with nearly full coverage forward backward angles in center of mass. The has been up 6.6 GeV^{2} -t, covering kinematic regimes generalized parton distributions (GPD) and baryon-to-meson transition distribution amplitudes (TDA) at same time. experimental results very kinematics demonstrate sensitivity chiral-odd chiral-even...
New precision measurements of cross sections and polarization asymmetries in the $p(\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\gamma}},\ensuremath{\gamma}p)$ reaction at 90\ifmmode^\circ\else\textdegree\fi{} c.m. are presented for incident energies between 213 333 MeV. A long-standing problem with earlier experiments that appeared to violate unitarity peak \ensuremath{\Delta} is resolved. Data compared theories based on baryon resonance structure dispersion relations. Recent...
Exclusive photoproduction cross sections have been measured for the process $\ensuremath{\gamma}p\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{0}[{e}^{+}{e}^{\ensuremath{-}}(\ensuremath{\gamma})]$ with Dalitz decay final state using tagged photon energies in range of ${E}_{\ensuremath{\gamma}}=1.275--5.425$ GeV. The complete angular distribution ${\ensuremath{\pi}}^{0}$, entire energy up to large values $t$ and $u$, has first time. data obtained show that section $d\ensuremath{\sigma}/dt$, at...
Differential cross sections and analyzing powers have been measured for the excitation by 318 MeV protons of states $^{40}\mathrm{Ca}$ below 7.2 MeV. The data those normal-parity excitations which transition densities are available from electroexcitation measurements analyzed in terms medium modifications to nucleon-nucleon interaction. We find that empirical effective interaction previously fitted $^{16}\mathrm{O}$(p,p') at same energy predicts $^{40}\mathrm{Ca}$(p,p') very well....
Analyzing powers ${\mathit{A}}_{\mathit{y}}$ were measured for ${\mathrm{\ensuremath{\pi}}}^{+}$ and ${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$ elastic scattering from polarized $^{13}\mathrm{C}$ at energies near the ${\mathit{P}}_{33}$ resonance. At ${\mathit{T}}_{\mathrm{\ensuremath{\pi}}}$=132 MeV values of are significantly different zero ${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$. For 132 both all other energies, mostly consistent with zero. These data differ...
Results of the first pion single-charge-exchange experiment on a polarized nuclear target are reported. Analyzing powers Ay for (π+,π0) reaction at Tπ+=163 MeV C13 were measured over an angular range between 20° and 60° in laboratory system. Calculations distorted-wave impulse approximation do not reproduce these new data.Received 13 September 1990DOI:https://doi.org/10.1103/PhysRevLett.66.2193©1991 American Physical Society
We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. scattered 6-GeV, longitudinally polarized electrons off protons a cryogenic $^{14}$NH$_3$ target, extracted double single for $ep\rightarrow e^\primeπ^0X$ multidimensional bins four-momentum transfer ($1.0
Differential cross sections and analyzing powers for scattering of 200 318 MeV protons have been measured states $^{48}\mathrm{Ca}$ up to 7 excitation. The data cover c.m. momentum transfers from approximately 0.4 3.0 ${\mathrm{fm}}^{\mathrm{\ensuremath{-}}1}$. Neutron transition densities were extracted the ${2}_{1}^{+}$,${3}_{1}^{\mathrm{\ensuremath{-}}}$,${3}_{2}^{\mathrm{\ensuremath{-}}}$,${4}_{2}^{+}$, ${5}_{1}^{\mathrm{\ensuremath{-}}}$ using density-dependent empirical effective...
A separation of the longitudinal and transverse 12C(e,e′p) cross sections in quasifree region has been performed parallel kinematics at Q2 0.64 1.8 GeV2 for initial proton momentum <80 MeV. The separated spectral functions Q2=0.64GeV2 show significant differences missing energy between 25 60 MeV indicating a breakdown single nucleon knockout picture. exhibit definite transfer dependence.Received 29 November 1999DOI:https://doi.org/10.1103/PhysRevC.61.061602©2000 American Physical Society
Differential cross sections and analyzing powers for low-lying states of $^{32}\mathrm{S}$ were measured using 318 MeV protons. The data analyzed an empirical effective interaction previously fitted to inelastic scattering $^{16}\mathrm{O}$ $^{40}\mathrm{Ca}$ at the same energy. Transition densities many general expansions which permit evaluation uncertainties due statistical normalization errors, penetrability distortion, incompleteness in momentum space. accuracy procedure was tested by...
Differential cross sections and analyzing powers for low-lying states of $^{34}\mathrm{S}$ were measured using 318 MeV protons. Neutron transition densities the ${2}_{1}^{+}$ ${2}_{2}^{+}$ fitted to data general expansions which permit evaluation uncertainties due statistical normalization errors, penetrability distortion, incompleteness in momentum space. We find that experimental agree well with shell model first ${2}^{+}$ state, but neutron density second state is distinctly different...
In this paper, the authors apply two modular exponentiation algorithms such as left-to-right binary method and Montgomery powering ladder algorithm on Raspberry Pi evaluate their security against Side-channel attack.
Differential and integrated cross sections for the reaction $^{4}\mathrm{He}$(${\mathrm{\ensuremath{\pi}}}^{+}$,pp) at ${\mathit{T}}_{\mathrm{\ensuremath{\pi}}}$=114 162 MeV are reported. These first results this using a large solid angle detector covering \ensuremath{\approxeq}55% of 4\ensuremath{\pi} sr. Directly measured absorption on two-nucleon pairs ${\mathrm{\ensuremath{\sigma}}}_{\mathrm{abs}}$=25.7\ifmmode\pm\else\textpm\fi{}1.8 mb 114...
Spectra, angular distributions, and integrated cross sections for inclusive inelastic scattering of 96.5-MeV ${\mathrm{\ensuremath{\pi}}}^{+}$ ${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$ from $^{2}\mathrm{H}$, $^{3}\mathrm{He}$, $^{4}\mathrm{He}$ are presented. The measurements were made using a high-pressure gas cell, which permits an accurate determination relative all targets. data compared with distorted-wave impulse-approximation calculations modified plane-wave calculation....
Pairing based cryptography is considered as the next generation of security for which it attracts many researcher to work on faster and efficient pairing make practical. Among several challenges pairing; scalar multiplication rational point defined over extension field degree k ≥ 12 important. However, there exists isomorphic group relatively lower field. Exploiting such property, this paper has showed a mapping technique between groups in context Ate-based with Kachisa-Schaefer-Scott (KSS)...