A5039159672- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- Nuclear physics research studies
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Stochastic processes and statistical mechanics
- Cosmology and Gravitation Theories
- International Science and Diplomacy
- Theoretical and Computational Physics
- Radiation Detection and Scintillator Technologies
- Environmental Sustainability and Technology
- Quantum chaos and dynamical systems
- Infrared Target Detection Methodologies
- Quantum Mechanics and Applications
- Astrophysics and Cosmic Phenomena
- Radioactive Decay and Measurement Techniques
Maastricht University
2021-2025
National Institute for Subatomic Physics
2016-2025
Universitat Ramon Llull
2023
RWTH Aachen University
2023
Universitat de Barcelona
2023
Cracow University of Technology
2023
Wuhan University
2022
Technical University of Munich
2020-2021
Folkwang University of the Arts
2016-2019
University of Siegen
2016-2019
A bstract We study the phenomenology of electric dipole moments (EDMs) induced in various scalar leptoquark models. consider generic couplings to quarks and leptons match Standard Model effective field theory. After evolving resulting operators low energies, we connect EDM experiments by using up-to-date hadronic, nuclear, atomic matrix elements. show that current experimental limits set strong constraints on possible CP-violating phases Depending involved interaction, existing searches for...
A bstract We present the first determination of V cb from inclusive $$ B\to {X}_c \ell {\overline{v}}_{\ell} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi> <mml:mo>→</mml:mo> <mml:msub> <mml:mi>X</mml:mi> <mml:mi>c</mml:mi> </mml:msub> <mml:mi>ℓ</mml:mi> <mml:mover> <mml:mi>v</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> using moments dilepton invariant mass, q 2 . These are reparametrization quantities and depend on a reduced set non-perturbative...
EOS is an open-source software for a variety of computational tasks in flavor physics. Its use cases include theory predictions within and beyond the Standard Model particle physics, Bayesian inference parameters from experimental theoretical likelihoods, simulation pseudo events number signal processes. ensures high-performance computations through C++ back-end ease usability Python front-end. To achieve this flexibility, enables user to select implementations relevant decay processes...
A bstract Inclusive semileptonic $$ B\to {X}_c\ell \overline{\nu} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi> <mml:mo>→</mml:mo> <mml:msub> <mml:mi>X</mml:mi> <mml:mi>c</mml:mi> </mml:msub> <mml:mi>ℓ</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> decays can be described in the Heavy Quark Expansion (HQE) and allow for a precision determination of CKM element | V cb |. We calculate terms 1/{m}_b^5 <mml:mn>1</mml:mn>...
Experimental searches for new physics beyond the standard model of particle are not constrained to high energy sector alone. This article shows examples on symmetry violations, possible breaking time reversal and Lorentz invariance, from nuclear neutron beta decay experiments discusses how accuracy parameters could be improved in search physics.
We test a data-driven approach based on QCD factorization for charmless three-body B-decays by confronting it to measurements of CP violation in B − → π + −. While some the needed non-perturbative objects can be directly extracted from data, others can, so far, only modelled. Although this is currently model dependent, we comment perspectives reduce dependence. our naturally accommodates gross features Dalitz distribution, cannot quantitatively explain details seen current experimental data...
Non-leptonic $B$ decays into charmless final states offer an important laboratory to study CP violation and the dynamics of strong interactions. Particularly interesting are $B^0_s\to K^-K^+$ $B^0_d\to\pi^-\pi^+$ decays, which related by $U$-spin symmetry interactions, allow for extraction CP-violating phases tests Standard Model. The theoretical precision is limited $U$-spin-breaking corrections innovative methods needed in view impressive future experimental expected era Belle II LHCb...
A bstract The determination of V cb relies on the Heavy-Quark Expansion and extraction non-perturbative matrix elements from inclusive b → c decays. proliferation these complicates their at 1/ m 4 higher, thereby limiting extraction. Reparametrization invariance links different operators in expansion thus reducing number independent to eight for total rate. We show that this reduction also holds spectral moments as long they are defined by reparametrization invariant weight-functions. This...
Abstract The inclusive semileptonic $$B\rightarrow X_c \ell {\bar{\nu }}_\ell$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>→</mml:mo> <mml:msub> <mml:mi>X</mml:mi> <mml:mi>c</mml:mi> </mml:msub> <mml:mi>ℓ</mml:mi> <mml:mover> <mml:mi>ν</mml:mi> </mml:mrow> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> and X_u <mml:mi>u</mml:mi> decays allow for the extraction of CKM elements $$|V_{cb}|$$ <mml:mo>|</mml:mo> <mml:mi>V</mml:mi>...
We can learn (more) about the state a quantum system is in through measurements. look at how to describe uncertainty system's conditional on executing such show that by exploiting interplay between desirability, coherence and indifference, general rule for conditioning be derived. then apply this measurement outcomes, it generalises set of outcomes.
We introduce the code kolya, an open-source tool for phenomenological analyses of inclusive semileptonic B\to X_c l\bar \nu_l <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msub><mml:mi>X</mml:mi><mml:mi>c</mml:mi></mml:msub><mml:mi>l</mml:mi><mml:msub><mml:mover><mml:mi>ν</mml:mi><mml:mo accent="true">‾</mml:mo></mml:mover><mml:mi>l</mml:mi></mml:msub></mml:mrow></mml:math> decays. It contains a library to compute...
We introduce the code kolya, an open-source tool for phenomenological analyses of inclusive semileptonic B\to X_c l\bar \nu_l <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msub><mml:mi>X</mml:mi><mml:mi>c</mml:mi></mml:msub><mml:mi>l</mml:mi><mml:msub><mml:mover><mml:mi>ν</mml:mi><mml:mo accent="true">‾</mml:mo></mml:mover><mml:mi>l</mml:mi></mml:msub></mml:mrow></mml:math> decays. It contains a library to compute...
We provide a decision-theoretic framework for dealing with uncertainty in quantum mechanics. This is two-fold: on the one hand there may be about state system in, and other hand, as essential to mechanical uncertainty, even if known, measurements still produce an uncertain outcome. In our framework, therefore play role of acts outcome simple postulates ensure that Born's rule encapsulated utility functions associated such acts. approach allows us uncouple (precise) probability theory from...
A bstract The QCD × QED factorization is studied for two-body non-leptonic and semi-leptonic B decays with heavy-light final states. These decays, like $$ {\overline{B}}_{(s)}^0\to {D}_{(s)}^{+}{\pi}^{-} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mover> <mml:mi>B</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mfenced> <mml:mi>s</mml:mi> </mml:mfenced> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>D</mml:mi> <mml:mo>+</mml:mo> <mml:msup>...
We present Standard Model predictions for lepton flavour universality ratios of inclusive $B\to X_{(c)} \ell \bar\nu_\ell$. For the $\ell=\mu,e$, these are very close to unity as expected. $\tau$ mode, we update SM prediction branching ratio including power-corrections in heavy-quark expansion up $1/m_b^3$. These serve an important cross-check exclusive D^{(*)}\ell\bar\nu_\ell$ modes, which tensions exists between and measurements those modes.
A bstract Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons. The QCD LCDA for mesons includes short-distance physics at energy scales of the heavy-quark mass. In this paper we achieve separation perturbative scale from purely hadronic effects by matching to convolution a function with universal, quark-mass independent defined effective theory. This allows resum potentially large logarithms between Λ m Q as well hard process...
A bstract The B → Kℓ + ℓ − system is particularly interesting to explore physics beyond the Standard Model. Such effects could provide new sources of CP violation, thereby giving rise Wilson coefficients which not only be real, as assumed in most analyses, but also complex. We propose a strategy extract complex C 9 μ , 10 from data, utilising complementarity direct violation K and mixing-induced arising — addition $$ {B}_d^0\to {K}_S{\mu}^{+}{\mu}^{-} <mml:math...
We derive a set of light-cone sum rules relating the $S$-wave $B\to K \pi$ hadronic form factors to $B$-meson distribution amplitudes (LCDAs), taking into account complete LCDAs up and including twist four. These results complement for $P$-wave obtained earlier. then use new estimate contributions \pi\ell\ell$ decays as function $K\pi$ invariant mass. pay particular attention fact that spectrum cannot be modelled by Breit-Wigner resonances, employ more consistent dispersive coupled-channel...
A bstract We study the available data on exclusive leptonic and semileptonic c → sℓ + ν decays within Standard Model beyond. Our analysis accounts for theory correlations between relevant hadronic matrix elements through application of dispersive bounds. find that, a global analysis, bounds are generally well respected only mildly affect extraction Cabibbo-Kobayashi-Maskawa (CKM) element | V cs |. Assuming dynamics, we obtain $$ \left|{V}_{cs}\right|=0.957\pm 0.003, <mml:math...
A bstract With the first data being recorded at Belle II, we are brink of a new era in quark flavour physics. The many exciting opportunities for II include full angular analysis inclusive $$ \overline{B}\to {X}_s{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mover> <mml:mi>B</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>→</mml:mo> <mml:msub> <mml:mi>X</mml:mi> <mml:mi>s</mml:mi> </mml:msub> <mml:msup> <mml:mi>ℓ</mml:mi>...
A bstract We show that the QCD factorization approach for B -meson decays to charmless hadronic two-body final states can be extended include electromagnetic corrections. The presence of electrically charged final-state particles complicates framework. Nevertheless, formula takes same form as in alone, with appropriate generalizations definitions light-cone distribution amplitudes and factors QED effects. More precisely, we factorize effects above strong interaction scale Λ non-radiative...
We discuss the QED-generalized leading-twist light-cone distribution amplitudes of heavy mesons, that appear in QCD$\times$QED factorization theorems for exclusive two-body $B$ decays. In presence electrically charged particles, these functions should be more appropriately regarded as soft heavy-meson decays into two back-to-back particles. this paper, we derive one-loop anomalous dimension and study their behaviour under renormalization-scale evolution, obtaining an exact solution Laplace...
Exploring correlations between the CP asymmetries of $B^0_d\to\pi^0K_{\rm S}$ following from an isospin relation, we uncover new tensions with Standard Model in data for neutral $B\to\pi K$ decays. Should this intriguing picture originate New Physics, a modified electroweak penguin sector provides key scenario. It includes models extra $Z'$ bosons, which offer attractive ways to resolve anomalies $B\to K^{(*)}\ell^+\ell^-$ measurements. We present strategy reveal underlying physics, apply it...
A bstract Exclusive non-leptonic two-body decays of B mesons have been studied extensively in the past two decades within framework factorization. However, exploration corresponding three-body case has only started recently, part motivated by new data. We consider here simplest from point view factorization, namely heavy-to-heavy transitions. provide a careful derivation SCET/QCDF factorized amplitudes to NNLO α s , and discuss numerical impact NLO corrections. then study narrow-width limit,...