K. Trabelsi
A5114375010- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Particle accelerators and beam dynamics
- Distributed and Parallel Computing Systems
- CCD and CMOS Imaging Sensors
- Advanced NMR Techniques and Applications
- Gamma-ray bursts and supernovae
- Stochastic processes and statistical mechanics
- Radioactive Decay and Measurement Techniques
- Atomic and Molecular Physics
- Business Strategy and Innovation
- Scientific Computing and Data Management
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2019-2024
Université Paris-Saclay
2019-2024
University of Sfax
2015-2024
Institut National de Physique Nucléaire et de Physique des Particules
1996-2023
Centre National de la Recherche Scientifique
1996-2023
Université Paris-Sud
2019-2022
Campbell Collaboration
2012-2022
GANIL
2019-2021
High Energy Accelerator Research Organization
2011-2020
The Graduate University for Advanced Studies, SOKENDAI
2008-2020
This article reports world averages of measurements $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging Group using results available through summer 2016. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, \CP~violation semileptonic decays CKM matrix elements.
This work is on the Physics of B Factories. Part A this book contains a brief description SLAC and KEK Factories as well their detectors, BaBar Belle, data taking related issues. discusses tools methods used by experiments in order to obtain results. The results themselves can be found C. Please note that version 3 archive auxiliary book. uses notation alpha, beta, gamma for angles Unitarity Triangle. nominal phi_1, phi_2 phi_3. cite Eur. Phys. J. C74 (2014) 3026.
The Belle experiment, running at the KEKB e+e− asymmetric energy collider during first decade of century, achieved its original objective precisely measuring differences between particles and antiparticles in B system. After collecting 1000 fb−1 data various Υ resonances, also obtained many other physics results described this article.
This article reports world averages for measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at least through end 2009. Some presented use data spring 2010. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
This article summarizes the status of global fit Cabibbo-Kobayashi-Maskawa (CKM) parameters within Standard Model performed by CKMfitter group. Special attention is paid to inputs for CKM angles $\ensuremath{\alpha}$ and $\ensuremath{\gamma}$ ${B}_{s}\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu}$ ${B}_{d}\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu}$ decays. We illustrate current situation other unitarity triangles. also discuss constraints on generic...
We present measurements of the branching fractions for decays $B\to K \mu^{+}\mu^{-}$ and e^{+}e^{-}$, their ratio ($R_{K}$), using a data sample 711 $fb^{-1}$ that contains $772 \times 10^{6}$ $B\bar{B}$ events. The were collected at $\Upsilon(4S)$ resonance with Belle detector KEKB asymmetric-energy $e^{+}e^{-}$ collider. $R_{K}$ is measured in five bins dilepton invariant-mass-squared ($q^{2}$): $q^{2} \in (0.1, 4.0), (4.0, 8.12), (1.0, 6.0)$, $(10.2, 12.8)$ ($>14.18) GeV^{2}/c^{4}$,...
This article reports world averages for measurements of b-hadron and c-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at end 2007. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
We present results from a study of $X(3872)\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\pi}J/\ensuremath{\psi}$ decays produced via exclusive $B\ensuremath{\rightarrow}KX(3872)$ decays. determine the mass to be ${M}_{X(3872)}=(3871.85\ifmmode\pm\else\textpm\fi{}0.27(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.19(\mathrm{syst}))\text{ }\text{ }\mathrm{MeV}$, 90% confidence level upper limit on natural width ${\ensuremath{\Gamma}}_{X(3872)}<1.2\text{ product branching fraction...
This paper gathers a selection of standard model predictions issued from the metrology Cabibbo-Kobayashi-Maskawa parameters performed by CKMfitter group. The includes purely leptonic decays neutral and charged $B$, $D$, $K$ mesons. In light expected measurements LHCb experiment, special attention is given to radiative decay modes $B$ mesons as well $B$-meson mixing observables, in particular semileptonic charge asymmetries ${a}_{\mathrm{SL}}^{d,s}$ which have been recently investigated D0...
We report a study of $B\to (J/\psi \gamma) K$ and (\psi' \gamma)K$ decay modes using $772\times 10^{6}$ $B\bar{B}$ events collected at the \Upsilon(4S)$ resonance with Belle detector KEKB energy-asymmetric $e^+ e^-$ collider. observe $X(3872) \to J/\psi \gamma$ first evidence for $\chi_{c2} in (X_{c\bar{c}}\gamma) decays, while search \psi' no significant signal is found. measure branching fractions, $\mathcal{B}(B^{\pm} X(3872) K^{\pm}) \mathcal{B}(X(3872) J/\psi\gamma)$ $=$...
Using 605 fb−1 of data collected at the Υ(4S) resonance we present a measurement inclusive radiative B-meson decay channel, B→Xsγ. For lower photon energy thresholds 1.7, 1.8, 1.9, and 2.0 GeV, as defined in rest frame B meson, measure partial branching fraction mean variance spectrum. At 1.7 GeV threshold obtain BF(B→Xsγ)=(3.45±0.15±0.40)×10−4, where errors are statistical systematic.Received 8 July 2009DOI:https://doi.org/10.1103/PhysRevLett.103.241801©2009 American Physical Society
We estimate, in a large class of scenarios, the sensitivity to new physics ${B}_{d}$ and ${B}_{s}$ mixings achievable with $50\text{ }\text{ }{\mathrm{ab}}^{\ensuremath{-}1}$ Belle II }{\mathrm{fb}}^{\ensuremath{-}1}$ LHCb data. find that current limits on contributions both ${B}_{d,s}$ systems can be improved by factor $\ensuremath{\sim}5$ for all values $CP$-violating phases, corresponding over 2 increase scale probed. Assuming same suppressions Cabbibo-Kobayashi-Maskawa matrix elements as...
We measure the ratio of branching fractions for $Υ(4S)$ decays to $B^+B^-$ and $B^0\bar{B}{}^0$ using $B^+ \rightarrow J/ψ(\ell\ell) K^+$ $B^0 K^0$ samples, where $J/ψ(\ell\ell)$ stands $J/ψ\to \ell^+\ell^-$ ($\ell = e$ or $μ$), with $711$ fb$^{-1}$ data collected at resonance Belle detector. find decay rate $Υ(4S) B^+B^-$ over B^0\bar{B}{}^0$ be $1.065\pm0.012\pm 0.019 \pm 0.047$, which is most precise measurement date. The first second uncertainties are statistical systematic,...
The mixing of neutral mesons is sensitive to some the highest scales probed in laboratory experiments. In light planned LHCb Upgrade II, a possible upgrade Belle and broad interest flavor physics tera-$Z$ phase proposed FCC-ee program, we study constraints on new contributions ${B}_{d}$ ${B}_{s}$ mixings which can be obtained these benchmark scenarios. We explore limitations this identify measurement $|{V}_{cb}|$ as one key ingredients progress beyond current expectations necessary maximize...
Belle II is an experiment operating at the intensity frontier. Over next decades, it will record decay of billions bottom mesons, charm hadrons, and tau leptons produced in 10 GeV electron-positron collisions SuperKEKB high-luminosity collider KEK. These data, collected low-background kinematically known conditions, allow us to measure hundreds parameters that test standard model (SM) probe for existence new particles, mass scales orders magnitudes higher than those studied energy We project...
We present new measurements of CP-violation parameters in B0 -> phiK0, K+K-Ks, f0(980)Ks, eta'Ks, omegaKs and Kspi0 decays based on a sample 275 x 10^6 BBbar pairs collected at the Upsilon(4S) resonance with Belle detector KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed one specified decay channels, flavor accompanying identified from its products. for each modes are obtained asymmetries distributions proper-time intervals between two decays. The combined...
The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure ratio R(DK) of rates to favored mode D→K(-)π(+) be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which first evidence signal with significance 4.1σ. also asymmetry A(DK) between charge-conjugate decays A(DK)=-0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). results are based full 772×10(6) BB(¯) pair data sample...
We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using full data sample of 772×10^{6} BB[over ¯] pairs recorded by Belle detector at KEKB asymmetric-energy e^{+}e^{-} collider. use events in which one B meson is fully reconstructed hadronic decay mode. find no evidence B^{±}→K^{±}τℓ and set upper limits on their branching fractions 90% confidence level (1-3)×10^{-5} range. The obtained are world's best results.
We report a study of the decay D^{0}→K_{S}^{0}K_{S}^{0} using 921 fb^{-1} data collected at or near ϒ(4S) and ϒ(5S) resonances with Belle detector KEKB asymmetric energy e^{+}e^{-} collider. The measured time-integrated CP asymmetry is A_{CP}(D^{0}→K_{S}^{0}K_{S}^{0})=(-0.02±1.53±0.02±0.17)%, branching fraction B(D^{0}→K_{S}^{0}K_{S}^{0})=(1.321±0.023±0.036±0.044)×10^{-4}, where first uncertainty statistical, second systematic, third due to normalization mode (D^{0}→K_{S}^{0}π^{0}). These...
We report on a search for $CP$ violation in ${\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ decays using data sample of $699\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the Belle experiment at KEKB electron-positron asymmetric-energy collider. The asymmetry is measured four bins invariant mass...
The Belle experiment, running at the KEKB e^+ e^- asymmetric energy collider during first decade of century, has recorded 770 fb^-1 data Upsilon(4S) resonance. A combination recent results obtained with this sample is used to perform a measurement CKM angle gamma. We use B^+- -> DK^+- and D^*K^+- decays where D meson into K_S^0pi+pi-, Kpi, KK, pipi, K_S^0 pi^0 eta final states D^* Dpi^0 Dgamma. obtains most precise gamma date, = (68^{+15}_{-14}) degree.