A5029473339- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced NMR Techniques and Applications
- Nuclear physics research studies
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Management and Organizational Practices
- Particle accelerators and beam dynamics
- Astrophysics and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Seismic Imaging and Inversion Techniques
- Neutrino Physics Research
- Physics of Superconductivity and Magnetism
- Computational Physics and Python Applications
- Quantum chaos and dynamical systems
- Leadership, Human Resources, Global Affairs
- Molecular spectroscopy and chirality
- Renewable energy and sustainable power systems
- Earthquake Detection and Analysis
Polish Academy of Sciences
2007-2024
Institute of Nuclear Physics, Polish Academy of Sciences
2013-2022
Credo Reference (United States)
2022
Deutsches Elektronen-Synchrotron DESY
2019
Institute of Chemistry of the Slovak Academy of Sciences
2018
Institute of Physics of the Slovak Academy of Sciences
2017-2018
Slovak Academy of Sciences
2017-2018
Comenius University Bratislava
2018
Uniwersytet Komisji Edukacji Narodowej w Krakowie
2016
Institute of Computer Science
2016
We improve our description of pion-pion scattering data by imposing additional requirements to previous fits, in the form once-subtracted Roy-like equations, while extending analysis up 1100 MeV. provide simple and ready use parametrizations amplitude. In addition, we present a detailed derivation these dispersion relations that, 450 MeV region, an constraint which is much stronger than Forward Dispersion Relations standard Roy equations. The ensuing constrained amplitudes describe existing...
We use our latest dispersive analysis of ππ scattering data and the very recent K(ℓ4) experimental results to obtain mass, width, couplings two lightest scalar-isoscalar resonances. These parameters are defined from their associated poles in complex plane. The analytic continuation plane is made a model-independent way by means once- twice-subtracted dispersion relations for partial waves, without any other theoretical assumption. find f(0)(600) pole at (457(-13))+14))-i(279(-7)(+11)) MeV...
We complete and improve the fits to experimental $\ensuremath{\pi}\ensuremath{\pi}$ scattering amplitudes, both at low high energies, that we performed in previous papers of this series. then verify corresponding amplitudes satisfy analyticity requirements, form partial wave forward dispersion relations (FDR) all Roy equations below$\overline{K}K$ threshold; first by construction, last two, inside errors. Then repeat including as constraints FDR equations. The ensuing central values various...
We study $CP$ violation and the contribution of strong kaon-pion interactions in three-body $B\ensuremath{\rightarrow}K{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays. extend our recent work on effect two-pion $S$- $P$-wave to that corresponding ones. The weak amplitudes have a first term derived QCD factorization second one as phenomenological added penguin amplitudes. effective coefficients include leading order contributions plus next-to-leading vertex penguins...
The Cosmic Ray Extremely Distributed Observatory (CREDO) is a newly formed, global collaboration dedicated to observing and studying cosmic rays (CR) ray ensembles (CRE): groups of minimum two CR with common primary interaction vertex or the same parent particle. CREDO program embraces testing known CRE scenarios, preparing observe unexpected physics, it also suitable for multi-messenger multi-mission applications. Perfectly matched capabilities, could be formed both within classical models...
A separable potential formalism is used to describe the $\pi\pi$ and $K\overline{K}$ interactions in scalar-isoscalar states energy range from threshold up 1.4 GeV. Introduction of relativistic propagators into a system Lippmann-Schwinger equations leads very good description data ($\chi^{2}=0.93$ per one degree freedom). Three poles are found this region: fo(500) ($M=506\pm 10$ MeV, $\Gamma=494\pm 5$ MeV), fo(975) ($M=973\pm 2$ $\Gamma=29\pm MeV) fo(1400) ($M=1430\pm $\Gamma=145\pm 25$...
We study the contribution of strong interactions between two pions in $S$ and $P$ waves to weak $B\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\pi}K$ decay amplitudes. The interference these is analyzed $\ensuremath{\pi}\ensuremath{\pi}$ effective-mass range $\ensuremath{\rho}(770{)}^{0}$ ${f}_{0}(980)$ resonances. use a unitary $\overline{K}K$ coupled-channel model describe $S$-wave Breit-Wigner function for $P$-wave amplitude. $B$-decay amplitudes, obtained from QCD factorization,...
B decays into pion K and anti-K K, where the pion-pion pairs interact in isospin zero S-wave, are studied effective mass range from threshold to 1.2 GeV. The interplay of strong weak decay amplitudes is analyzed using an unitary coupled channel model. Final state interactions described terms four scalar form factors constrained by unitarity chiral perturbation theory. Branching ratios for f0(980)K, calculated factorization approximation with some QCD corrections, too low as compared recent...
We study CP violation and the contribution of strong pion-pion interactions in three-body B ± → π ∓ decays within a quasi twobody QCD factorization approach.The short distance interaction amplitude is calculated next-to-leading order coupling constant with vertex penguin corrections.The meson-meson final state are described by pion non-strange scalar vector form factors for S P waves relativistic Breit-Wigner formula D wave.The factor from unitary coupled-channel model including ππ, K...
We introduce parametrizations of hadronic three-body $B$ and $D$ weak decay amplitudes that can be readily implemented in experimental analyses are a sound alternative to the simplistic widely used sum Breit-Wigner type amplitudes, also known as isobar model. These particularly useful interpretation CP asymmetries Dalitz plots. They derived from previous calculations based on quasi-two-body factorization approach which two-body final state interactions fully taken into account terms unitary...
We improve, in the energy region between $\overline{K}K$ thresholdand $\ensuremath{\sim}1.4\text{ }\text{ }\mathrm{GeV}$, energy-dependentphase shift analysis of $\ensuremath{\pi}\ensuremath{\pi}$ scattering presented a previous paper. For S0 wave, we haveincluded more data above have taken into account systematically elasticity on reaction $\ensuremath{\pi}\ensuremath{\pi}\ensuremath{\rightarrow}\overline{K}K$. here made coupled channel fit. D0 wave,we considered information low parameters,...
The presently available high-statistics data of the ${D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ processes measured by Belle and BABAR collaborations are analyzed within a quasi-two-body factorization framework. Starting from weak effective Hamiltonian, tree annihilation amplitudes build up decay amplitude. Two three final-state mesons assumed to form single scalar, vector or tensor state originating quark-antiquark pair so that...
Roy's equations, which incorporate crossing symmetry of the pion-pion scattering amplitudes, are used to resolve present ambiguity between two solutions for scalar-isoscalar phase shifts below 1 GeV. It is shown that "down-flat" solution satisfies well equations and consequently while other called "up-flat" does not thus should be eliminated.
The status and parameters of the scalar, vector, tensor mesonic resonances are obtained in multichannel analysis processes $\ensuremath{\pi}\ensuremath{\pi}\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\pi}$, $K\overline{K}$, $\ensuremath{\eta}\ensuremath{\eta}$, $\ensuremath{\eta}{\ensuremath{\eta}}^{\ensuremath{'}}$ compared with other results. For example, we ${f}_{0}(600)$ meson mass $774\ifmmode\pm\else\textpm\fi{}15\text{ }\text{ }\mathrm{MeV}$ width...
Charged B decays to three charged kaons are analysed in the framework of QCD factorization approach. The strong final state K+K-interactions described using kaon scalar and vector form factors. non-strange strange factors at low K+K- effective masses constrained by chiral perturbation theory satisfy two-body unitarity conditions. latter stem from properties meson-meson amplitudes which describe all possible S-wave transitions between coupled channels consisting two kaons, pions four pions....
Gamification is known to enhance users’ participation in education and research projects that follow the citizen science paradigm. The Cosmic Ray Extremely Distributed Observatory (CREDO) experiment designed for large-scale study of various radiation forms continuously reach Earth from space, collectively as cosmic rays. CREDO Detector app relies on a network involved users now working worldwide across phones other CMOS sensor-equipped devices. To broaden user base activate current users,...
${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{K}^{\ifmmode\pm\else\textpm\fi{}}$ and ${\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\overline{K}}^{0}$ decay channels are analyzed within the QCD factorization scheme where final state interactions before after hadronization included. The ${K}^{*}(892)$ ${K}_{0}^{*}(1430)$ resonance effects taken into account using...
A set of once subtracted dispersion relations with imposed crossing symmetry condition for the $\ensuremath{\pi}\ensuremath{\pi}$ $D$- and $F$-wave amplitudes is derived analyzed. An example numerical calculations in effective two-pion mass range from threshold to 1.1 GeV presented. It shown that these new impose quite strong constraints on analyzed interactions are very useful tools test amplitudes. One goals this work provide a complete equations required easy use. Full analytical...