A5100785082- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Relativity and Gravitational Theory
- Computational Physics and Python Applications
- Pulsars and Gravitational Waves Research
- Noncommutative and Quantum Gravity Theories
- Neutrino Physics Research
- Astrophysical Phenomena and Observations
- Earth Systems and Cosmic Evolution
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Quantum Mechanics and Applications
- Advanced Thermodynamics and Statistical Mechanics
- Astronomy and Astrophysical Research
- Advanced Differential Geometry Research
- Particle Accelerators and Free-Electron Lasers
- Noise Effects and Management
- Medical Imaging Techniques and Applications
North Carolina State University
2007-2025
University of Liverpool
2023-2025
Fermi National Accelerator Laboratory
2012-2024
Instituto de Física Corpuscular
2023
Universitat de València
2023
Laboratoire de Physique Subatomique et de Cosmologie
2013-2022
Université Grenoble Alpes
2014-2022
Institut National de Physique Nucléaire et de Physique des Particules
2013-2022
Centre National de la Recherche Scientifique
2010-2022
University of North Carolina at Chapel Hill
1989-2022
The quasilocal energy of gravitational and matter fields in a spatially bounded region is obtained by employing Hamilton-Jacobi analysis the action functional. First, surface stress-energy-momentum tensor defined functional derivative with respect to three-metric on $^{3}$B, history system's boundary. Energy density, momentum spatial stress are projecting normally tangentially family spacelike two-surfaces that foliate $^{3}$B. integral density over such two-surface B associated...
The coupling of the metric to an incoherent dust introduces into spacetime a privileged dynamical reference frame and time foliation. comoving coordinates particles proper along worldlines become canonical in phase space system. Hamiltonian constraint can be resolved with respect momentum that is canonically conjugate time. Formal imposition as operator restriction on quantum states yields functional Schr\"odinger equation. ensuing density has extraordinary feature: it depends only geometric...
Action functionals describing relativistic perfect fluids are presented. Two of these actions apply to whose equations state specified by giving the fluid energy density as a function particle number and entropy per particle. Other in terms other choices dependent independent variables. Particular cases include for isentropic pressureless dust. The canonical Hamiltonian forms derived, symmetries conserved charges identified, boundary value initial problems discussed. As previous works on...
We investigate the thermodynamical properties of black holes in (3+1)- and (2+1)-dimensional Einstein gravity with a negative cosmological constant. In each case, ther thermodynamic internal energy is computed for finite spatial region that contains hole. The temperature at boundary this regoin defined by differentiating respect to entropy, equal product surface (divided 2\ensuremath{\pi}) Tolman redshift factor stationary gravitational field. also compute pressure and, case 2+1 hole, show...
We present a measurement of forward-backward asymmetry in top quark-antiquark production proton-antiproton collisions the final state containing lepton and at least four jets. Using dataset corresponding to an integrated luminosity $5.4\,\mathrm {fb}^{-1}$, collected by \DZ\ experiment Fermilab Tevatron Collider, we measure \ttbar\ be $(9.2 \pm 3.7)$% reconstruction level. When corrected for detector acceptance resolution, is found $(19.6 6.5)$%. also based on from quark decay, $(15.2...
We combine searches by the CDF and D0 Collaborations for associated production of a Higgs boson with $W$ or $Z$ subsequent decay to bottom-antibottom quark pair. The data, originating from Fermilab Tevatron $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$, correspond integrated luminosities up $9.7\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. are conducted mass in range $100--150\text{ }\mathrm{GeV}/{c}^{2}$. observe an excess events data compared background predictions,...
A spherical charged black hole in thermal equilibrium is considered from the perspective of a grand canonical ensemble which electrostatic potential, temperature, and surface area are specified at finite boundary. correspondence established between boundary-value data well-posed problem region Euclidean spacetime freely chosen thermodynamic specifying ensemble. The Hamiltonian Gauss's-law constraints solved eliminated Einstein-Maxwell action, producing "reduced action" that depends upon two...
The gravitational field in a spatially finite region is described as microcanonical system. density of states $\ensuremath{\nu}$ expressed formally functional integral over Lorentzian metrics and the geometrical boundary data that are fixed corresponding action. These thermodynamical extensive variables, including energy angular momentum When chosen such system semiclassically by any real stationary axisymmetric black hole, then this same approximation $\mathrm{ln}\ensuremath{\nu}$ shown to...
We provide a detailed analysis of several aspects the turduckening technique for evolving black holes. At analytical level we study constraint propagation general family BSSN-type formulation Einstein's field equations and identify under what conditions turducken procedure is rigorously justified violations will propagate to outside present high-resolution spherically symmetric studies which verify our predictions. Then three dimensional simulations single distorted holes using different...
The top quark is the heaviest known elementary particle, with a mass about 40 times larger than of its isospin partner, bottom quark. It decays almost 100% time to $W$ boson and Using top-antitop pairs at Tevatron proton-antiproton collider, CDF D0 Collaborations have measured quark's in different final states for integrated luminosities up $5.8\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. This paper reports on combination these measurements that results more precise value any individual...
We present an updated measurement of the anomalous like-sign dimuon charge asymmetry Aslb for semi-leptonic $b$-hadron decays in 9.0 fb^-1 p pbar collisions recorded with D0 detector at a center-of-mass energy sqrt{s} = 1.96 TeV Fermilab Tevatron collider. obtain (-0.787 +- 0.172(stat) 0.093 (syst))%. This result differs by 3.9 standard deviations from prediction model and provides evidence anomalously large CP violation neutral B decay. The dependence on muon impact parameter is consistent...
We present a measurement of the W boson mass using data corresponding to 4.3fb^-1 integrated luminosity collected with D0 detector during Run II at Fermilab Tevatron p\bar{p} collider. With sample 1,677,394 -> e\nu candidate events, we measure M_W = 80.367 +/- 0.026 GeV. This result is combined an earlier determined independent sample, 1fb^-1 luminosity, yield 80.375 0.023
We report an updated measurement of the $CP$-violating phase, ${\ensuremath{\phi}}_{s}^{J/\ensuremath{\psi}\ensuremath{\phi}}$, and decay-width difference for two mass eigenstates, $\ensuremath{\Delta}{\ensuremath{\Gamma}}_{s}$, from flavor-tagged decay ${B}_{s}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}$. The data sample corresponds to integrated luminosity $8.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ accumulated with D0 detector using $p\overline{p}$ collisions...
The ICARUS collaboration employed the 760-ton T600 detector in a successful 3-year physics run at underground LNGS laboratory, performing sensitive search for LSND-like anomalous νe appearance CERN Neutrino to Gran Sasso beam, which contributed constraints on allowed neutrino oscillation parameters narrow region around 1 eV2. After significant overhaul CERN, has been installed Fermilab. In 2020 cryogenic commissioning began with cool down, liquid argon filling and recirculation. then started...
Abstract The nonlinear viscoelastic behavior of filled elastomers is examined in detail using a variety samples including carbon‐black natural rubbers and fumed silica silicone elastomers. New insights into the Payne effect are provided by examining generic results sinusoidal dynamic constant strain rate tests conducted true simple shear both with without static offsets. deformation history explored probing low amplitude modulus recovery kinetics resulting from perturbation large such as...
The canonical formulation of field theory on open spaces is considered. It proved, under appropriate assumptions, that the Poisson bracket two differentiable generators also a generator.
Current thinking attributes information processing for neuromuscular control exclusively to the nervous system. Our cadaveric experiments and computer simulations show, however, that tendon network of fingers performs logic computation preferentially change torque production capabilities. How this propagates tension enable manipulation has been debated since time Vesalius DaVinci remains an unanswered question. We systematically changed proportion tendons extensor digitorum versus two dorsal...
We establish that in the functional-integral expression for grand partition function, thermodynamic properties of a charged, rotating black hole are derived from complex geometry. The corresponding real ``thermodynamical'' action is constructed explicitly.
The Baumgarte-Shapiro-Shibata-Nakamura (BSSN) and standard gauge equations are written in covariant form with respect to spatial coordinate transformations. BSSN variables defined as tensors no density weights. This allows us evolve a given set of initial data using two different systems relate the results familiar tensor transformation rules. Two variants considered. These differ from one another way that determinant conformal metric is evolved.