A5002428267- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Advanced NMR Techniques and Applications
- Particle Detector Development and Performance
- Methane Hydrates and Related Phenomena
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Distributed and Parallel Computing Systems
- Scientific Research and Discoveries
- Quantum and Classical Electrodynamics
- Matrix Theory and Algorithms
- Medical Imaging Techniques and Applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Solar and Space Plasma Dynamics
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
University of Vienna
2021-2022
Heidelberg University
1995-2022
University Hospital Heidelberg
2022
Central Institute of Mental Health
2022
Universitat Autònoma de Barcelona
2007-2020
Institute for High Energy Physics
2010-2020
Institució Catalana de Recerca i Estudis Avançats
2009-2018
The University of Adelaide
2012-2014
San Francisco State University
2012-2014
York University
2012-2014
We present the physics program of Belle II experiment, located on intensity frontier SuperKEKB $e^+e^-$ collider. collected its first collisions in 2018, and is expected to operate for next decade. It anticipated collect 50/ab collision data over lifetime. This book outcome a joint effort collaborators theorists through theory interface platform (B2TiP), an that commenced 2014. The aim B2TiP was elucidate potential impacts program, which includes wide scope topics: B physics, charm, tau,...
In the original version of this manuscript, an error was introduced on pp352. '2.7nb:1.6nb' has been corrected to '2.4nb:1.3nb' in current online and printed version. doi:10.1093/ptep/ptz106.
We present a new analysis of the ratio epsilon'/epsilon within Standard Model (SM) using formalism that is manifestly independent values leading (V-A)x(V-A) QCD penguin, and EW penguin hadronic matrix elements operators Q_4, Q_9, Q_10, applies to SM as well extensions with same operator structure. It valid under assumption exactly describes data on CP-conserving K -> pi amplitudes. As result this high precision now available for CKM quark mass parameters, accuracy depends only two...
Abstract Theoretical predictions for particle production cross sections and decays at colliders rely heavily on perturbative Quantum Chromodynamics (QCD) calculations, expressed as an expansion in powers of the strong coupling constant α S . The current <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi class="MJX-tex-calligraphic" mathvariant="script">O</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mn>1</mml:mn> <mml:mo>%</mml:mo>...
Recent experimental results on hadronic tau decays into strange particles by the OPAL Collaboration are employed to determine V(us) and m(s) from moments of invariant mass distribution. Our V(us)=0.2208+/-0.0034 m(s)(2 GeV)=81+/-22 MeV. The error is dominated experiment should be improvable in future. Nevertheless, already now our result competitive with standard extraction K(e3) decays, it compatible unitarity.
The decay constants of the pseudoscalar mesons B and ${B}_{s}$ are evaluated from QCD sum rules for two-point function. Recently calculated perturbative three-loop corrections incorporated into rule. An analysis in terms bottom quark pole mass turns out to be unreliable due large higher order radiative corrections. On contrary, $\overline{\mathrm{MS}}$ scheme under good theoretical control a reliable determination ${f}_{B}$ ${f}_{{B}_{s}}$ becomes feasible. Including variations all input...
Recent experimental improvements on $K$-decay data allow for a precise extraction of the strangeness-changing scalar $K\ensuremath{\pi}$ form factor and related strange spectral function. On basis this as well corresponding pseudoscalar function, quark mass is determined to be ${m}_{s}(2\text{ }\text{ }\mathrm{GeV})=92\ifmmode\pm\else\textpm\fi{}9\text{ }\mathrm{MeV}$. Further taking into account chiral perturbation theory ratios, light up down masses turn out ${m}_{u}(2\text{...
Employing our previous framework to treat non-perturbative effects self-consistently, including duality violations, we update the determination of strong coupling, \alpha_s, using a modified version 1998 OPAL data, updated reflect current values exclusive mode hadronic \tau decay branching fractions. Our best n_f=3 from data are \alpha_s(m^2_\tau)=0.325+-0.018 and \alpha_s(m^2_\tau)=0.347+-0.025 in fixed-order contour-improved perturbation theory, respectively. To account for effects,...
We present a new framework for the extraction of strong coupling from hadronic τdecays through finite-energy sum rules. Our focus is on small, but still significant non-perturbative effects that, in principle, affect both central value and systematic error. employ quantitative model order to accommodate violations quark-hadron duality, enforce consistent treatment higher-dimensional contributions Operator Product Expansion our Using 1998 OPAL data non-strange isovector vector axial-vector...
The quantum chromodynamics (QCD) coupling α_{s} is not a physical observable of the theory, since it depends on conventions related to renormalization procedure. We introduce definition QCD coupling, denoted by α[over ^]_{s}, whose running explicitly scheme invariant. dependence new ^]_{s} parametrized single parameter C, transformations scale Λ. It demonstrated that appropriate choices C can lead substantial improvements in perturbative prediction observables. As phenomenological...