A5016988170- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Superconducting Materials and Applications
- Distributed and Parallel Computing Systems
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- Nuclear physics research studies
- Nuclear Physics and Applications
- Gaussian Processes and Bayesian Inference
- Radiation Effects in Electronics
- Stochastic processes and financial applications
- advanced mathematical theories
- CCD and CMOS Imaging Sensors
Rutgers, The State University of New Jersey
2016-2025
Rutgers Sexual and Reproductive Health and Rights
2022-2024
Birla Institute of Technology and Science, Pilani
2024
University of Tennessee at Knoxville
2014-2023
Deutsches Elektronen-Synchrotron DESY
2023
Austrian Academy of Sciences
2017
Rockefeller University
2015
European Organization for Nuclear Research
2012-2013
Children's Defense Fund
2001-2012
National and Kapodistrian University of Athens
2011-2012
In this paper, we review recent theoretical progress and the latest experimental results in jet substructure from Tevatron LHC. We status of outlook for calculation simulation tools studying substructure. Following up on report Boost 2010 workshop, present a new set benchmark comparisons techniques, focusing variables grooming methods that are collectively known as 'top taggers'. To facilitate further exploration, have attempted to collect, harmonize publish software implementations these techniques.
We have compared the decay rates of ${K}_{L}$ and ${K}_{S}$ to ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ final states using a subset data from KTeV experiment (E832) at Fermilab. find that direct-CP-violation parameter $\mathrm{Re}({\ensuremath{\epsilon}}^{\ensuremath{'}}/\ensuremath{\epsilon})$ is equal...
We present a series of measurements based on ${K}_{L,S}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${K}_{L,S}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ decays collected in 1996--1997 by the $\mathrm{KTeV}$ experiment (E832) at Fermilab. compare these four $\stackrel{\ensuremath{\rightarrow}}{K}\ensuremath{\pi}\ensuremath{\pi}$ decay rates to measure direct $\mathrm{CP}$ violation parameter...
The strong coupling αs(M2Z) has been measured using hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. data were compared with QCD predictions both fixed order O(α2s) and including resummed analytic formulas based on next-to-leading logarithm approximation. In this comprehensive analysis we studied event shapes, jet rates, particle correlations, angular energy flow, checked consistency between values extracted from these different measures. Combining all results obtain...
We present measurements of ${\mathit{R}}_{\mathit{b}}$ using the SLD at SLC. The analyses use 2D and 3D impact parameter tags a displaced vertex tag which all exploit small size stability ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ interaction point precision CCD pixel detector to achieve high bb\ifmmode\bar\else\textasciimacron\fi{}-tagging efficiencies purities. combined measurement yields ${\mathit{R}}_{\mathit{b}}$=0.229\ifmmode\pm\else\textpm\fi{}0.011 is consistent with...
We present a measurement of the charge asymmetry delta(L) in mode K(L)-->pi(+/-)e(-/+)nu based on 298 x 10(6) analyzed decays. measure value = [3322+/-58(stat)+/-47(syst)]x10(-6), good agreement with previous measurements and 2.4 times more precise than current best published result. The result is used to place stringent limits CPT DeltaS DeltaQ violation neutral kaon system.
We report on a search for the decay KL→π0ν¯ν, carried out as part of E799-II, rare KL experiment at Fermilab. Within standard model, KL→π0ν¯ν is dominated by direct CP violating processes, and thus an observation implies confirmation violation. No events were observed, we set upper limit branching ratio to be <5.9×10−7 90% confidence level.Received 8 July 1999DOI:https://doi.org/10.1103/PhysRevD.61.072006©2000 American Physical Society
We report on a new measurement of the decay ${K}_{L}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}\ensuremath{\gamma}\ensuremath{\gamma}$ by KTeV experiment at Fermilab. determine branching ratio to be $(1.68\ifmmode\pm\else\textpm\fi{}0.07\ifmmode\pm\else\textpm\fi{}0.08)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. Our data show first evidence for low-mass $\ensuremath{\gamma}\ensuremath{\gamma}$ signal as predicted recent $O({p}^{6})$ chiral perturbation calculations which...
The recent discovery of a large CP violating asymmetry in KL-->pi+pi-e+e- mode has prompted us to seach for the associated KL-->pi 0 pi e+e- decay KTeV-E799 experiment at Fermilab. In 2.7 x 10(11) K(L) decays, one candidate event been observed with an expected background 0.3 event, resulting upper limit branching ratio 6.6 10(-9) 90% C.L.
We present the first measurement of form factor ratios g(1)/f(1) (direct axial vector to vector), g(2)/f(1) (second class current), and f(2)/f(1) (weak magnetism) for decay Xi(0)-->Sigma(+)e(-)nu macro(e) using KTeV (E799) beam line detector at Fermilab. From Sigma(+) polarization measured with Sigma(+)-->p pi(0) e(-)-nu; correlation, we measure be 1.32+/-(0.21)(0.17)(stat)+/-0.05(syst), assuming SU(3)(f) (flavor) values f(2)/f(1). Our results are all consistent exact symmetry.
We searched for the appearance of π+π− pairs with invariant mass ≥648MeV/c2 in a neutral beam. Such an observation could signify decay long-lived light particle. find no evidence this decay. Our null result severely constrains existence R0 hadron, which is lightest bound state gluon and gluino (g˜g), thereby also gluino. Depending on photino mass, we exclude lifetime ranges 1.2–4.6GeV/c2 2×10−10–7×10−4s, respectively.Received 18 July 1997DOI:https://doi.org/10.1103/PhysRevLett.79.4083©1997...
Abstract Aluminum (Al) has gained popularity for surface plasmon resonance-based applications due to its affordability and compatibility with CMOS technology at the nanoscale. Over angle-interrogation mode, plasmonic interactions occurring metal-dielectric junction, are outcomes of attenuated total internal reflection phenomenon. Modified Al-based Kretschmann configuration results in phase-matching conditions that seen as resonant points characteristics. In our work, we have engineered an...
Using an impact parameter tag to select enriched sample of ${Z}^{0}\ensuremath{\rightarrow}b\overline{b}$ events, and the net momentum-weighted track charge identify sign underlying $b$ quark, we have measured left-right forward-backward asymmetry for quark production as a function polar angle. Based on $1.8{\mathrm{pb}}^{\ensuremath{-}1}$ ${Z}^{0}$ decay data produced with mean electron beam polarization ${P}_{e}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}63%$, this yields direct...
In 1992, L.G. Levchuk noted that the asymmetries measured in M\o ller scattering polarimeters could be significantly affected by intrinsic momenta of target electrons. This effect is largest devices with very small acceptance or high resolution laboratory angle. We use a polarimeter linac polarized SLAC Linear Collider to study this effect. observe inclusion alters beam polarization -14% itself and produces result consistent measurements from Compton polarimeter. Additionally, necessary...
We report on the analysis of rare decay K(L)-->mu(+)mu(-)gamma 1997 data from KTeV experiment at Fermilab. A total 9327 candidate events are observed with 2.4% background, representing a factor 40 increase in statistics over current world sample. find that B(K(L)-->mu(+)mu(-)gamma) = (3.62 +/- 0.04(stat) 0.08(syst)) x 10(-7). The form parameter alpha(K*) is measured to be -0.160(+0.026)(-0.028). In addition, we make first measurement alpha D'Ambrosio-Isidori-Portolés factor, finding -1.54...
We report the first branching fraction measurement of decay ${K}_{L}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{e}^{+}{e}^{\ensuremath{-}}$. With a sample 46 candidates, and an expected background level 9.4 events, is determined to be...
Bhabha scattering with polarized electrons at the ${Z}^{0}$ resonance has been measured SLD experiment SLAC Linear Collider. The first measurement of left-right asymmetry in is presented, yielding effective weak mixing angle ${sin}^{2}{\ensuremath{\theta}}_{W}^{\mathrm{eff}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.2245\ifmmode\pm\else\textpm\fi{}0.0049\ifmmode\pm\else\textpm\fi{}0.0010$. electron couplings to are extracted from a combined analysis and previously published:...
We have performed studies of the K(0)(L)-->pi(+)pi(-)gamma direct emission ( DE) and inner Bremsstrahlung IB) vertices, based on data collected by KTeV during 1996 Fermilab fixed target run. find a(1)/a(2) = -0.737+/-0.034 GeV2 for DE form-factor parameter in rho-propagator parametrization, report fits form factor to linear quadratic functions as well. concurrently measure gamma(K(0)(L)-->pi(+)pi(-)gamma,E(*)(gamma)>20 MeV)/gamma(K(0)(L)-->pi(+)pi(-)) (20.8+/-0.3)x10(-3), a DE/(DE+IB)...
The infrared-ultraviolet properties of quantum gravity suggest on very general grounds that hard short distance scattering processes are highly suppressed for center mass energies beyond the fundamental Planck scale. If this scale is not too far above electroweak scale, these nonperturbative effects could be manifest as an extinction high transverse momentum jets at LHC. To model effects, we implement Monte Carlo modification PYTHIA event generator based a Veneziano form factor with large...
We determine the strong coupling αs from a comprehensive study of energy-energy correlations (EEC's) and their asymmetry (AEEC's) in hadronic decays Z0 bosons collected by SLD experiment at SLAC. The data are compared with all four available predictions QCD calculated up to O(α2s) perturbation theory, also resummed calculation matched these calculations. find large discrepancies between values extracted different renormalization scale ambiguity determined EEC's using calculations; this is...
The branching ratio of the rare decay ${\ensuremath{\pi}}^{0}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}$ has been measured in E799-II, a kaon experiment using KTeV detector at Fermilab. We observed 275 candidate events, with an expected background $21.4\ifmmode\pm\else\textpm\fi{}6.2$ events which includes contribution from Dalitz decays....
We present a direct measurement of Ac=2vcac(vc2+ac2) from the left-right forward-backward asymmetry D*+ and D+ mesons in Z0 events produced with longitudinally polarized SLAC Linear Collider beam. These Z0→cc¯ are tagged on basis event kinematics decay topology sample hadronic decays recorded by Large Detector. measure Ac0=0.73±0.22(stat)±0.10(syst).Received 10 April 1995DOI:https://doi.org/10.1103/PhysRevLett.75.3609©1995 American Physical Society