A5073926082- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Noncommutative and Quantum Gravity Theories
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Quantum Mechanics and Applications
- Quantum Mechanics and Non-Hermitian Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Distributed and Parallel Computing Systems
- Quantum Electrodynamics and Casimir Effect
- Pulsars and Gravitational Waves Research
- Quantum chaos and dynamical systems
- Astrophysics and Cosmic Phenomena
- Relativity and Gravitational Theory
- Nuclear physics research studies
- Algebraic and Geometric Analysis
- Medieval and Classical Philosophy
- International Science and Diplomacy
Indiana University Bloomington
2009-2020
Institute of High Energy Physics
2019-2020
Emory University
1998-2008
University of Wisconsin–Madison
1992-1999
Indiana University
1995-1996
Lawrence Berkeley National Laboratory
1989-1992
Fermi National Accelerator Laboratory
1992
University of Silesia in Katowice
1992
University of California, Berkeley
1989-1991
Massachusetts Institute of Technology
1987
We make a numerical study of gauge and Yukawa unification in supersymmetric grand unified models examine the quantitative implications fermion mass Ans\"atze at scale. Integrating renormalization group equations with ${\ensuremath{\alpha}}_{1}({M}_{Z})$ ${\ensuremath{\alpha}}_{2}({M}_{Z})$ as inputs, we find ${\ensuremath{\alpha}}_{3}({M}_{Z})\ensuremath{\simeq}0.111(0.122)$ for ${M}_{\mathrm{SUSY}}={m}_{t}$ ${\ensuremath{\alpha}}_{3}({M}_{Z})\ensuremath{\simeq}0.106(0.116)$...
We examine the spectrum of supersymmetric particles predicted by grand unified theoretical (GUT) models where electroweak symmetry breaking is accomplished radiatively. evolve soft supersymmetry parameters according to renormalization group equations (RGE). The minimization Higgs potential conveniently described means tadpole diagrams. present complete one-loop expressions for these conditions, including contributions from matter and gauge sectors. concentrate on low $\tan \beta$ fixed point...
We develop a mass formula for finite lumps of strange quark matter near flavor equilibrium. Our Fermi-gas model includes surface tension and Coulomb energy but not quantum-chromodynamic radiative corrections. Assuming is stable in bulk, we investigate the radioactive decays strangelets (clumps with baryon number A\ensuremath{\lesssim}${10}^{7}$). derive conditions governing instability all decay modes. The regions number, charge, hypercharge which various are allowed illustrated graphically,...
Quarks whose left- and right-handed chiral components are both singlets with respect to the SU(2) weak-isospin gauge group, offer interesting physics possibilities beyond Standard Model (SM) already studied in many contexts. We here address some further aspects. first collect update constraints from present data on their masses mixings conventional quarks. discuss possible effects $b\to s\gamma$ $Z\to b\bar b$ decays give fresh illustrations of CP asymmetries $B^0$ differing dramatically SM...
The observation that the $b \rightarrow s\gamma $ decay rate is close to Standard Model value implies a large mass for charged-Higgs boson in Minimum Supersymmetric Model, nearly closes $t b H^+$ channel. For $m_t = 150$ GeV, parameter region $m_A \ltap 130$ GeV excluded; this largely pre-empts LEP II searches and also partially excludes would be inaccessible MSSM Higgs both at SSC/LHC.
Supersymmetric field theories can be constructed that violate Lorentz and CPT symmetry. We illustrate this with some simple examples related to the original Wess-Zumino model.
Radiative corrections can produce substantial changes in the masses, production cross sections, and decay branching fractions of Higgs bosons supersymmetric models, which greatly modify their experimental detectability. We study variations expected event rates at $\mathrm{pp}$ supercolliders caused by radiative effects from full one-loop effective potential minimal model, for $\mathrm{CP}$-even $h$ $H$. note that masses $h$, $H$, $\mathrm{CP}$-odd boson $A$ simultaneously fall intermediate...
The mass sum rules involving Higgs bosons that arise in supersymmetric extensions to the standard model are renormalized. general procedure for calculating radiative corrections these relations is presented. from loop contributions of quarks, leptons, and their partners relation ${M}_{h}^{2}+{M}_{H}^{2}={M}_{A}^{2}+{M}_{Z}^{2}$ minimal extension derived. results indicate large may heavy matter fields. Squarks significantly heavier than fermionic contribute when mixing occurs squark sector....
The generalized uncertainty principle has been described as a general consequence of incorporating minimal length from theory quantum gravity. We consider simple mechanical model where the operator corresponding to position discrete eigenvalues and show how results for minimum wave packets.
We present an analysis of the discovery reach for supersymmetric particles at upgraded Tevatron collider, assuming that SUSY breaking results in universal soft parameters grand unification scale, and lightest particle is stable neutral. first a review literature, including issues unification, renormalization group evolution supersymmetry effect radiative corrections on effective low energy couplings masses theory. consider experimental bounds coming from direct searches those arising...
The introduction of an interaction for dark energy to the standard cosmology offers a potential solution cosmic coincidence problem. We examine conditions on density that must be satisfied this scenario realized. Under some general we find stable attractor evolution Universe in future. Holographic conjectures offer specific examples models with desired properties.
High luminosity muon-muon colliders would provide a powerful new probe of Higgs boson physics through $s$-channel resonance production. We discuss the prospects for detection bosons and precision measurements their masses widths at such machine.
Using data collected with the D0 detector at Fermilab Tevatron Collider, corresponding to $5.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity, we search for violation Lorentz invariance by examining $t\overline{t}$ production cross section in $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ final states. We quantify this using standard-model extension framework, which predicts a dependence on sidereal time as orientation changes rotation Earth. Within measure...
We derive the two-loop evolution equations for Cabibbo-Kobayashi-Maskawa matrix. show that to leading order in mass and CKM hierarchies scaling of mixings $|V_{ub}|^2$, $|V_{cb}|^2$, $|V_{td}|^2$, $|V_{ts}|^2$ rephase-invariant CP-violating parameter $J$ is universal all orders perturbation theory. In other elements do not scale. Imposing constraint $λ_b=λ_τ$ at GUT scale determines factor be $\simeq 0.58$ MSSM.
At a fundamental level the notion of particle (quantum) comes from quantum field theory. From this point view we estimate corrections to free wave function due minimum-length deformed mechanics first order in deformation parameter. Namely, matrix element $⟨0|\mathit{\ensuremath{\Phi}}(t,\mathbf{x})|\mathbf{p}⟩$ that standard case sets $\ensuremath{\propto}\mathrm{exp}(i[\mathbf{p}\mathbf{x}\ensuremath{-}\ensuremath{\epsilon}(\mathbf{p})t])$ there appear three kinds when operator is...
The prospects are explored for testing Lorentz and $CPT$ symmetry in the top-quark sector. We present relevant Lagrange density, discuss physical observables, describe signals to be sought experiments. For top-antitop pair production via quark or gluon fusion with subsequent semileptonic hadronic decays, we obtain matrix element presence of violation using narrow-width approximation. issue sector is also addressed. demonstrate that single-top decay well suited a search violation, elements...
We explore a model of interacting dark energy where the density is related by holographic principle to Hubble parameter, and decay into matter occurs at rate comparable current value parameter. find this gives good fit observational data supporting an accelerating Universe, represents possible alternative interpretation expansion history Universe.
We study a set of textures giving rise to the correct masses and mixings charged fermions in context leptogenesis. The Dirac neutrino texture pattern is assumed be identical with up quark texture. heavy Majorana mass matrix obtained by inverting type-I seesaw formula using required solar atmospheric oscillation experiments as input. After making feasibility generated lepton asymmetry via decay right handed neutrino, we compute baryon numerically solving supersymmetric Boltzmann equations....
Journal Article U-VIKASHTEM MI-SHAM: RABBI JOSEPH B. SOLOVEITCHIK'S RESPONSE TO MARTIN BUBER'S RELIGIOUS EXISTENTIALISM Get access Michael S. Berger EMORY UNIVERSITY Search for other works by this author on: Oxford Academic Google Scholar Modern Judaism - A of Jewish Ideas and Experience, Volume 18, Issue 2, May 1998, Pages 93–118, https://doi.org/10.1093/mj/18.2.93 Published: 01 1998
The top-quark Yukawa infrared fixed-point solution of the renormalization group equations, with minimal supersymmetry and grand unification, defines a low-energy spectrum supersymmetric particle masses in terms few GUT-scale parameters assuming universal boundary conditions. We give predictions this model for inclusive b\ensuremath{\rightarrow}s\ensuremath{\gamma} branching fraction investigate impact nonuniversal scalar mass find our results do not depend significantly on value trilinear...