A5033611043- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Nuclear physics research studies
- Neutrino Physics Research
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Digital Media Forensic Detection
- Numerical Methods and Algorithms
- Scientific Measurement and Uncertainty Evaluation
- Superconducting Materials and Applications
- Algorithms and Data Compression
- Social Policy and Reform Studies
- Cold Fusion and Nuclear Reactions
- Stochastic processes and statistical mechanics
- Muon and positron interactions and applications
- Advanced Frequency and Time Standards
- Scientific Computing and Data Management
- Statistical and Computational Modeling
Uppsala University
2016-2022
Institute of High Energy Physics
2017-2021
Zhejiang University
2020
Indiana University Bloomington
2017-2018
Jagiellonian University
2015-2016
Institute of Physics
2015-2016
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2016
Campbell Collaboration
2015
The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for light vector mediator this dark force, $\mathrm{U}$ boson, with KLOE detector at DA$\Phi$NE $\mathrm{e}^{+}\mathrm{e}^{-}$ collider. Using an integrated luminosity 1.54 fb$^{-1}$, we studied process $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}\gamma$, $\mathrm{U} \mathrm{e}^{+}\mathrm{e}^{-}$, using...
The recent interest in a light gauge boson the framework of an extra U(1) symmetry motivates searches mass range below 1 GeV. We present search for such particle, dark photon, e+e−→Uγ, U→π+π− based on 28 million e+e−→π+π−γ events collected at DAΦNE by KLOE experiment. π+ π− production initial-state radiation compensates loss sensitivity previous U→e+e−, μ+μ− due to small branching ratios ρ–ω resonance region. found no evidence signal and set limit 90% CL mixing strength between photon ε2, U...
Using 1.6 fb−1 of e + − → ϕ ηγ data collected with the KLOE detector at DAΦNE, Dalitz plot distribution for η π 0 decay is studied world's largest sample ∼ 4.7 · 106 events. The density parametrized as a polynomial expansion up to cubic terms in normalized dimensionless variables X and Y . experiment sensitive all charge conjugation conserving expansion, including gX 2 term. statistical uncertainty parameters improved by factor two respect earlier measurements.
A measurement of the vector to pseudoscalar conversion decay $\phi \to \pi^0 e^+e^-$ with KLOE experiment is presented. sample $\sim 9500$ signal events was selected from a data set 1.7 fb$^{-1}$ $e^+e^-$ collisions at $\sqrt{s} \sim m_{\phi}$ collected DA$\Phi$NE collider. These were used obtain first transition form factor $| F_{\phi \pi^0}(q^2) |$ and new branching ratio decay: $\rm{BR}\,(\phi e^+e^-) = (\,1.35 \pm 0.05^{\,\,+0.05}_{\,\,-0.10}\,) \times 10 ^{-5}$. The result improves...
We searched for evidence of a Higgsstrahlung process in secluded sector, leading to final state with dark photon U and Higgs boson h', the KLOE detector at DAFNE. investigated case h' lighter than U, decaying into muon pair producing missing energy signature. found no set upper limits its parameters range 2m_mu<m_U<1000 MeV, m_h'<m_U.
The future ̅PANDA detector at FAIR is a state-of-the-art internal target designed for strong interaction studies. By utilizing an antiproton beam, rich and unique physics programme planned. experiment, as well feasibility studies hyperon charmonium physics, are discussed.
Using $1.6$ fb$^{-1}$ of $e^+ e^-\toϕ\toηγ$ data collected with the KLOE detector at DA$Φ$NE, Dalitz plot distribution for $η\to π^+ π^- π^0$ decay is studied world's largest sample $\sim 4.7 \cdot 10^6$ events. The density parametrized as a polynomial expansion up to cubic terms in normalized dimensionless variables $X$ and $Y$. experiment sensitive all charge conjugation conserving expansion, including $gX^2Y$ term. statistical uncertainty parameters improved by factor two respect earlier...
Hyperon production and the study of their properties is an important part physics programme future ANDA experiment at FAIR. Antihyperon-hyperon pairs will be produced in antiproton-proton collisions through annihilation least one light antiquark-quark (u, d) pair creation a corresponding number s pairs. By measuring decay products hyperons, spin observables such as polarisation can measured.
Abstract 1. In 1905 Charlier outlined some methods for the expansion of functions in series. 1 C. V. L. Charlier, Über die Darstellung willkürlicher Funktionen (Meddelanden från Lunds Observatorium, Ser. I, nr 27). Particularly he was dealing with frequency functions, but method has a more general application. As is well known there were two kinds developments considered, namely terms differentials and differences conveniently chosen developing function. The outstanding examples are —...
Abstract Extract It is well known that Pearson's system of frequency functions may be derived by integrating the differential equation On Gram series on functionsAll authorsW. Anderssonhttps://doi.org/10.1080/03461238.1942.10404749Published online:22 December 2011Display full size
Abstract In 1901 the town of Gent appropriated a municipal grant to societies paying benefit their members in case unemployment. The decision was founded on committee report principally written by lawyer Louis Varlez. should claim individual contributions constituting right unemployment allowance under certain conditions. order prevent dissipating risk selection sphere activity society join with some existing before. Such had been erected at several places as well Belgium other states, early...
The future PANDA experiment at FAIR aims to investigate a wide range of physics processes in antiproton-proton collisions rates up 20 MHz, while employing purely software-based event filter. To educate the trigger decisions, full reconstruction has be carried out real time. This challenge is amplified when considering tracks from particles with long lifetimes and displaced decay vertices, which add complexity algorithms. Here, we present modifications cellular automatonbased track finder...
Abstract A set of observations contains N elements, and the two measures x y are observed for each element. Searching ≫ best value as dependent on x, we put
Abstract The upcoming PANDA experiment at FAIR will be among a new generation of particle physics experiments to employ novel event filtering system realised purely in software, i.e. software trigger. To educate its triggering decisions, online reconstruction algorithms need offer outstanding performance terms efficiency and track quality. We present method reconstruct longitudinal parameters PANDA’s Straw Tube Tracker, which is general enough easily added other finding that focus on...
The paper presents status of three studies involving the $\omega$ meson using data collected by KLOE detector. first two projects are feasibility performed on simulated concerning an upper limit measure ment BR($\Phi \to \omega \gamma$) and form factor measurement in $\omega\to\pi^0l^+l^-$ dalitz decay. third study shows effect $\pi^0 - \pi^0$ interference has $\omega\to\pi^+\pi^-\pi^0$ Dalitz plot when is produced through $e^+e^-\to\omega\pi^0$ channel.
The MesonNet International Workshop was held in the Laboratori Nazionali di Frascati from September 29th to October 1st, 2014, being concluding meeting of research network within EU HadronPhysics3 project. is a focused on light meson physics gathering experimentalist and theoreticians Europe abroad. An overview projects related scope presented these mini-proceedings.
Abstract The PANDA experiment will be one of the pillars new Facility for Antiproton and Ion Research (FAIR), which is currently under construction in Darmstadt, Germany. a fixed-target allow study non-perturbative phenomena strong interaction. These probed antiproton-proton collisions momentum range 1.5 - 15 GeV/c. Within physics program, strangeness production addressed through <?CDATA $\bar{p}p\to \bar{Y}Y$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">...
The upcoming PANDA (anti-Proton ANnihilation at DArmstadt) experiment FAIR (Facility for Anti-proton and Ion Research) offers unique possibilities performing hyperon physics such as extraction of spin observables. Due to their relatively long-lived nature, the displaced decay vertices hyperons impose a particular challenge on track reconstruction event building. foreseen high luminosity beam momenta requires new advanced tracking algorithms successfully identifying events. purely software...