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Eberhard Widmann (Austrian Academy of Sciences (AT)), Martin Simon (Austrian Academy of Sciences (AT)), Savely Karshenboym (LMU, MPQ)22/05/2023, 10:00Social
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Andrei Afanaciev, Prof. Andrei Afanasev22/05/2023, 10:15
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Mr Kelin Gao (Chinese Academy of Sciences)22/05/2023, 11:00
Abstract provided as attached pdf-file.
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Dr Anna Viatkina, Anna Viatkina22/05/2023, 11:35precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf-file
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Fabio Ferrarotto (INFN - National Institute for Nuclear Physics)22/05/2023, 14:00precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
The evidence of dark matter so far is based only on gravitational effects observed at cosmological level. To explain these effects, many theoretical models suggest other non-gravitational very-weak interactions between dark matter and ordinary matter. To test this hypothesis, different experiments are trying to directly produce dark matter at particle accelerators.
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The Positron Annihilation... -
Alessandro Spallicci (Université d'Orléans - CNRS)22/05/2023, 14:25precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
Collaboration
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Benetti M. (Napoli), Bentum M.-J. (Eindhoven), Bonetti L. (Orléans), Capozziello S. (Napoli), dos Santos Filho L.R. (Rio de Janeiro), Ellis J. (CERN London), Helayël-Neto J.A. (Rio de Janeiro), Lämmerzahl C. (Bremen), López-Corredoira M. (La Laguna), Mavromatos N.E. (CERN London), Perlick V. (Bremen), Randriamboarison O. (Orléans), Retinò A. (Paris), Sakharov A.S. (CERN),... -
Andrzej Czarnecki22/05/2023, 14:50
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Vitaly Wirthl22/05/2023, 15:15
see attached pdf
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Prof. Enrico Massa (Istituto Nazionale di Ricerca Metrologica)22/05/2023, 16:00
abstract attached as pdf
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Markus Aspelmeyer (University of Vienna)22/05/2023, 16:40
not yet available
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Martin Simon (Austrian Academy of Sciences (AT))22/05/2023, 17:20Social
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Alina Weiser (Austrian Academy of Sciences (AT))22/05/2023, 17:30
A positron trap is a powerful and adaptable tool for performing experiments with positrons and positronium. These devices use a strong magnetic field, a stepped potential well and Nitrogen and CF$_4$ buffer gas. Positrons are initially trapped via the electronic excitation of N$_2$, CF$_4$ is added for efficient cooling via vibrational and rotational excitations. This type of positron trap can...
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Wiktoria Boguszyńska (Adam Mickiewicz University, Poznań, Poland)22/05/2023, 17:30
abstract provided as attached pdf-file
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Hiroki Tada (Nagoya University)22/05/2023, 17:30
abstract provided as attached pdf-file
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Roman Lavicka (Austrian Academy of Sciences (AT))22/05/2023, 17:30tests and extensions of the Standard Model of elementary particlesPoster presentation
The search for physics beyond the Standard Model (BSM) is one of the main goals of the LHC. Compared to standard proton-proton collision studies, heavy-ion collisions provide unique and complementary means to search for new phenomena. In particular, ultra-peripheral collisions (UPCs) of heavy ions offer a natural environment for the studies of photon-mediated processes, such as light-by-light...
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QianYu Zhang (APM of CAS)22/05/2023, 17:30
Generation of ground state HD+ based on the [2+1’] resonance-enhanced threshold photoionization (RETPI) is provided for rovibrational transition frequency measurement. Using state-selected [1+1’] resonance-enhanced multiphoton dissociation, the yield of rovibrational ground state HD+ is evaluated. The state preparation of HD+ lay an important basis of the proceed measurement which detects the...
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David Ferenc (ELTE, Eötvös Loránd University, Institute of Chemistry, Budapest, Hungary)22/05/2023, 17:30
abstract provided as attached pdf-file
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Vitaly Wirthl22/05/2023, 17:30
see attached pdf
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Andres Martinez de Velasco22/05/2023, 17:30precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
As the simplest neutral molecule, molecular hydrogen (H2) is a good testing ground for molecular quantum theory. Its dissociation energy D0 has become a benchmark value to test ab initio quantum molecular calculations. An experimental value for D0 can be obtained by relating the ionization energy of H2, to the ionization energy of atomic hydrogen and the dissociation energy of the H2 ion. By...
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Mr Marc Oliver Herdrich (Helmholtz-Institut Jena)22/05/2023, 17:30precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
abstract provided as attached pdf-file
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Ms Ioana Doran (ETH Zurich)22/05/2023, 17:30
abstract provided as attached pdf-file
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Wim Ubachs (VU University Amsterdam)22/05/2023, 17:30precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
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Viktoria Kraxberger (Austrian Academy of Sciences (AT))22/05/2023, 17:30tests and extensions of the Standard Model of elementary particlesPoster presentation
A number of experiments at CERN’s Antiproton Decelerator aim to measure the properties of antihydrogen to find structural differences hinting at CPT symmetry breaking that would explain the observed baryon-antibaryon asymmetry in our universe. These experiments detect antihydrogen through annihilation making the antiproton-nucleus ($\bar{p}A$) annihilation one of the main processes of...
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Amit Nanda (Austrian Academy of Sciences (AT))22/05/2023, 17:30tests and extensions of the Standard Model of elementary particlesPoster presentation
abstract provided as attached pdf file
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Philip Pfäfflein22/05/2023, 17:30precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
abstract provided as attached pdf-file
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Mr Elmer Grundeman (Vrije Universiteit Amsterdam)22/05/2023, 17:30precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
abstract provided as attached pdf-file
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Bastian Sikora22/05/2023, 17:30
abstract provided as attached pdf-file
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Péter Jeszenszki (Postdoc)22/05/2023, 17:30
The no-pair Dirac--Coulomb(--Breit) equation is solved with high-accuracy \cite{allorder,DiracCoulomb,Breit,LScoupling} to provide a starting point for a new alternative theoretical method in relation with high-resolution atomic and molecular spectroscopy \cite{QEDcorr}. The sub-parts-per-billion convergence of the energy is achieved by considering the relativistic symmetry with an $LS$...
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Shuiming Hu (Univ Sci & Tech China)23/05/2023, 09:00
abstract attached as pdf
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Dr Yu Sun23/05/2023, 09:45precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
Precision spectroscopy of narrow transitions of atoms and molecules has been the subject of numerous studies in recent decades and has been widely applied in sensing,metrology, and frequency references for optical clocks. Narrow optical resonances also provide excellent probes for determining fundamental physics constants, such as the Rydberg constant and the proton-to-electron mass ratio. In...
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QianHao Liu (University of Science and Technology of China)23/05/2023, 10:05precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
Precision spectroscopy of molecular hydrogen and its isotopes, combined with accurate calculations, allows us to test the fundamental quantum chemistry theory and to determine the fundamental physical constants such as the proton-to-electron mass ratio[1,2]. In general, high overtone transitions may allow for measurements with a better fractional accuracy. However, direct measurement of high...
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Jacek Komasa23/05/2023, 11:00
abstract provided as attached pdf-file
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Meissa Diouf23/05/2023, 11:35precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf-file
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Frank Cozijn (VU University Amsterdam)23/05/2023, 12:00precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
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Dr Paweł Czachorowski (Adam Mickiewicz University, Poznań)23/05/2023, 12:15Oral presentation
Abstract provided as an attached pdf file.
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Christoph Schwanda (Austrian Academy of Sciences (AT)), Christoph Schwanda23/05/2023, 14:00
A precise knowledge of the elements $|V_{cb}|$ and $|V_{ub}|$ of the CKM matrix is important to constraint the Standard Model of particle physics and predict the rate of ultra-rare $B$ meson decays such as $B\to\mu\nu$ or $B\to K\nu\bar\nu$. In this talk I will review the experimental status of these fundamental parameters with a focus on the latest developments and new results from the Belle...
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Andre Sopczak (Czech Technical University in Prague (CZ))23/05/2023, 14:40
The latest results of Higgs boson searches beyond the Standard Model are reviewed from the ATLAS and CMS experiments. This includes searches for additional neutral, charged and double charged Higgs-like bosons, searches for dark matter produced in association with a Higgs boson and sesarches for new physics in Higgs boson pair production processes. Exotic Higgs boson decays are addressed as...
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Zoltan Laszlo Trocsanyi (ELTE Eotvos Lorand University (HU))23/05/2023, 15:20
The superweak (SW) force is a minimal, anomaly-free U(1) extension of the standard model (SM), designed to explain the origin of (i) neutrino masses and mixing matrix elements, (ii) dark matter, (iii) cosmic inflation, (iv) stabilization of the electroweak vacuum and (v) leptogenesis. In this talk we discuss how the parameter space of the model is constrained by providing viable scenarios for...
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Kseniia Svirina (LPSC, Université Grenoble Alpes)23/05/2023, 16:10
Searches for permanent electric dipole moments (EDM) of fundamental particles and systems are among the most sensitive probes for CP violation beyond the Standard Model, which is required in order to explain the baryon asymmetry of the Universe. The current limit on the EDM of the neutron is set by our collaboration, $|d_n|$ < $1.8 \times 10^{-26}$ ecm (C.L. 90%) in the nEDM experiment....
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Sebastian Lahs (Laboratoire Aimé Cotton)23/05/2023, 16:35precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
To explain the open questions in the fundaments of physics, new theories that reach beyond the standard model of particle physics are needed. A great number of these indirectly predict electric dipole moments (EDM) of fundamental particles in ranges that are just within reach for modern atomic and molecular physics experiments. While measurements in atomic and molecular beams, and more...
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Hartmut Abele23/05/2023, 16:50
The Neutron and Quantum Physics Group at TU Wien pursues various research approaches in the field of particles and cosmology.
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In this talk, I will present a precise determination of the weak axial vector coupling gA from a measurement of the -asymmetry in the decay of free neutrons and the relationship to the unitarity of the CKM matrix. New symmetry tests of various kinds are coming within... -
Martin Simon (Austrian Academy of Sciences (AT))23/05/2023, 17:35Social
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Dr Saeed Nasiri (Department of Physics, Nazarbayev University)23/05/2023, 17:45
In this work, we present benchmark variational calculations for the ground and 15 lowest bound excited 1S and 1P states of doubly ionized Carbon (C III). The nonrelativistic wave function of each of these states is generated in an independent calculation by expanding it in terms of a large number (8,000−12,000) of all-electron explicitly correlated Gaussian functions (ECG) who’s nonlinear...
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Jesse Zhang (ETH Zürich)23/05/2023, 17:45
We are developing a high intensity, low-emittance atomic muonium (Mu $= \mu^+ + e^-$) beam, which would enable improving the precision of Mu spectroscopy measurements and may be amenable to a direct measurement of the gravitational acceleration of Mu. Measuring the free fall of Mu atoms would be the first test of the weak equivalence principle using elementary antimatter of the second...
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Hiroto Kokubo (Ibaraki University)23/05/2023, 17:45
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Mr Jinlu Wen (University of Science and Technology of China)23/05/2023, 17:45precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
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Maen Salman23/05/2023, 17:45
abstract provided as attached pdf-file.
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Dimitar Bakalov (Institute for Nuclear Research and Nuclear Energy, BAS)23/05/2023, 17:45
abstract attached as pdf
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Omer Amit (Max-Planck-Institut für Quantenoptik)23/05/2023, 17:45
Defining the values of constants is the best method to define units since it separates the definition from the realization. For example, there are two very different methods to realize the kg. In the future, there can be other methods of realizing the kg that adapt to possible advancements in technology without changing the definition. With the reform of the SI system, all but one of the units...
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Lilian Nowak (Austrian Academy of Sciences (AT))23/05/2023, 17:45tests and extensions of the Standard Model of elementary particlesPoster presentation
The ASACUSA-CUSP experiment located at CERN’s antiproton decelerator aims at measuring the ground state hyperfine splitting of antihydrogen (H̄) using a beam technique to test CPT symmetry. For this purpose, a beam of cold (~50K) hydrogen has been developed to characterize the antihydrogen spectroscopy apparatus [1]. Beyond serving as a test bench for the H̄ experiment, the hydrogen beamline...
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Sreya Banerjee (Max Planck Institute for Nuclear Physics)23/05/2023, 17:45
Abstract provided as an attached pdf file.
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Dr Daniel James Murtagh (Austrian Academy of Sciences (AT))23/05/2023, 17:45
The ASACUSA-Cusp experiment aims to perform spectroscopy of the hyperfine structure of antihydrogen by producing a beam of cold, spin polarised, ground state antihydrogen. The beam will be produced by mixing positrons and antiprotons in our unique Cusp trap which uses a pair of superconducting coils in an anti-Helmholtz configuration to produce a magnetic field capable of both confining the...
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Zoltán Péli (Institute for Theoretical Physics, ELTE Eötvös Loránd University)23/05/2023, 17:45tests and extensions of the Standard Model of elementary particlesPoster presentation
Abstract provided as attached pdf-file.
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Dr Oliver Forstner (Friedrich-Schiller-Universitaet Jena (DE)), Oliver Forstner (Friedrich-Schiller-Universitaet Jena (DE))23/05/2023, 17:45precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
Negative ions are complex quantum systems in which an additional electron is bound to the neutral atom or molecule by a weak van der Waals force resulting from polarization of the electron shell. This binding depends strongly on the electron configuration of the shell and is therefore sensitive to electron correlation effects. Due to the lack of long ranged Coulomb force the resulting binding...
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Mr Hugo D. Nogueira (Laboratoire Kastler Brossel (Sorbonne Université, CNRS))23/05/2023, 17:45
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Sebastian Lahs (Laboratoire Aimé Cotton)23/05/2023, 17:45precision measurements in fundamental physics, astrophysics and cosmologyPoster presentation
see attachment
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Marlene Tuechler23/05/2023, 17:45
The antikaon-nucleon interaction in the low-energy regime of QCD is, to this day, not fully understood and theoretical models need experimental constraints. Kaonic atoms are ideal candidates to study this regime of QCD including strangeness without the need for extrapolation to zero relative energy. The SIDDHARTA-2 experiment, located at the DA$\Phi$NE collider at LNF in Italy, can provide...
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Prof. Zong-Chao Yan (Department of Physics, University of New Brunswick)23/05/2023, 17:45
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Bastian Sikora23/05/2023, 17:45
abstract provided as attached pdf-file
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Simon Rheinfrank (Austrian Academy of Sciences (AT))23/05/2023, 17:45tests and extensions of the Standard Model of elementary particlesPoster presentation
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Prof. Kjeld Eikema (Vrije Universiteit Amsterdam)24/05/2023, 09:00
Abstract provided as attached pdf-file
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Dr Akira Ozawa (Max-Planck-Institute of Quantum Optics)24/05/2023, 09:45precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
The energy levels of hydrogen-like atoms and ions are accurately described by bound-state quantum electrodynamics (QED). The frequency of the narrow 1s-2s transition of atomic hydrogen has been measured with a relative uncertainty of less than $10^{-14}$. In combination with other spectroscopic measurements of hydrogen and hydrogen-like atoms, the Rydberg constant and the proton charge radius...
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Stefan Dickopf24/05/2023, 10:10precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
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Bastian Sikora24/05/2023, 10:35
abstract provided as attached pdf-file
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Peter Szokol24/05/2023, 11:12Social
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Vojtech Patkos (Charles University)24/05/2023, 11:30
abstract provided as attached pdf-file
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31. Probing Nuclear Size Effects with Precision Spectroscopy of Quantum Degenerate Metastable HeliumMs Yuri van der Werf (Vrije Universiteit Amsterdam)24/05/2023, 11:55precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf file
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Gloria Clausen (ETH Zürich)24/05/2023, 12:20precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf-file
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Alberto Lusiani (Scuola Normale Superiore and INFN, sezione di Pisa)24/05/2023, 14:00
The Muon g-2 experiment at FNAL measured the muon magnetic anomaly to 0.46 ppm in 2021 and expects to increase the precision on this quantity to 0.23 ppm in 2023 and to 0.14 ppm in 2025, providing a stronger test of the Standard Model prediction, whose uncertainty has been recently estimated at 0.37 ppm. We report on how the measurement is performed, on the improvements with respect to the...
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Zoltan Fodor24/05/2023, 14:30
Twenty years ago, in an experiment at Brookhaven National Laboratory, physicists detected what seemed to be a discrepancy between measurements of the muon’s magnetic moment and theoretical calculations of what that measurement should be, raising the tantalizing possibility of physical particles or forces as yet undiscovered. The Fermilab team has announced that their precise measurement...
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75. High-precision calculations of the electron anomalous magnetic moment in quantum electrodynamicsSergey Volkov24/05/2023, 15:15
The electron anomalous magnetic moment is the most precise value in microphysics. The agreement between theoretical calculations and experiments is good, but last years it became not so ideal due to an improved experimental precision. The current status of this agreement/disagreement for the electron g-2 will be reviewed as well as for the fine-structure constant.
In 2019 the author has...
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Shoichiro Nishimura (KEK IMSS)24/05/2023, 16:00
abstract provided as attached pdf-file
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Prof. Gregory Adkins (Franklin & Marshall College)24/05/2023, 16:35
abstract attached as a pdf file
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Jesse Zhang (ETH Zürich)24/05/2023, 17:00
Muonium (Mu = $\mu^+ + e^-$) is a purely leptonic, two-body exotic atom amenable to laser spectroscopy, which provides precision measurements of fundamental constants ($m_\mu, \mu_\mu$), and tests of bound state QED. It also provides a unique probe to test the weak equivalence principle on elementary antimatter of the second generation using a system without large contributions to the mass...
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Misha Gorshteyn (Mainz University)24/05/2023, 17:15
The most precise determination of the top-left corner element of the CKM quark mixing matrix $V_{ud}$ is obtained from accurate measurements of superallowed nuclear $\beta$ decays. Among the theoretical ingredients in this determination, the isospin symmetry-breaking (ISB) correction $\delta_\mathrm{C}$ plays a crucial role in aligning the $Ft$-values across all superallowed transitions. This...
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Stephan Schiller25/05/2023, 09:00
We present our recent experimental advances on laser spectroscopy of cold, trapped molecular hydrogen ions. The contribution to the determination of fundamental constants and tests of physical laws is discussed.
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Dr Sheng-Guo He25/05/2023, 09:45precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf-file
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Dr Jean-Philippe Karr (Laboratoire Kastler Brossel (Sorbonne Université, CNRS)), Jean-Philippe Karr (Laboratoire Kastler Brossel (FR))25/05/2023, 10:15
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Piet Oliver Schmidt25/05/2023, 11:10
abstract attached as pdf
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Chunhai Lyu (Max Planck Institute for Nuclear Physics, Heidelberg, Germany)25/05/2023, 11:55
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Mr Pavel Filianin (MPIK)25/05/2023, 12:10precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
The Penning-trap mass spectrometer Pentatrap [1] located at the Max Planck Institute for Nuclear Physics in Heidelberg is performing mass-ratio measurements with a relative uncertainty in the 10^−11 regime. One of the unique features of the Pentatrap experiment is the external ion source producing a wide range of charge states from gaseous or solid-state samples down to only 10^15 atoms. the...
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Eberhard Widmann (Austrian Academy of Sciences (AT))25/05/2023, 12:25Social
sponsored by the Physics Journal
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Edmund Myers (Florida State University)25/05/2023, 14:15
Abstract is attached as a pdf.
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Olesia Bezrodnova (Max Planck Institute for Nuclear Physics, Heidelberg, Germany)25/05/2023, 15:00precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
abstract provided as attached pdf-file
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Charlotte Konig25/05/2023, 15:25precision measurements in fundamental physics, astrophysics and cosmologyOral presentation
The \textsc{Alphatrap} experiment \cite{alphatrap} is a double Penning trap setup at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. The cryogenic trap setup allows for high precision spectroscopic measurements on single ions while utilizing the continuous Stern-Gerlach effect for state detection \cite{csge}.
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It is connected to a room temperature beamline with access to... -
Dr Vladimir Yerokhin (Max Planck Institute for Nuclear Physics)25/05/2023, 16:20
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Dr Zoltan Harman (Max Planck Institute for Nuclear Physics)25/05/2023, 16:45
emphasized textIn this contribution, we discuss the theory of the bound-electron g factor. This quantity can be measured nowadays to high precision in Penning-trap setups. The collaboration of theory and experiment enables impactful and detailed tests of quantum electrodynamics in a strong background electric field, and a competitive determination of fundamental constants [1] and nuclear...
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Prof. Michael Eides (University of Kentucky)25/05/2023, 17:10
Hard spin-independent three-loop radiative corrections to energy levels in muonium and positronium are calculated.
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These corrections could be relevant for the new generation of precise 1S-2S and 2S-2P measurements in muonium and
positronium. -
David Ferenc (ELTE, Eötvös Loránd University, Institute of Chemistry, Budapest, Hungary)25/05/2023, 17:35
abstract provided as attached pdf-file
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Vadim Lensky (JGU Mainz)26/05/2023, 09:00
The abstract is provided in the attached pdf file.
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Seiso Fukumura (Nagoya University)26/05/2023, 09:30
abstract provided as attached pdf-file
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Igor A. Valuev26/05/2023, 09:55
abstract provided as attached pdf-file
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Dr Ben Ohayon (Physics Department, Technion — Israel Institute of Technology), Ben Ohayon (Racah Institute of Physics)26/05/2023, 10:15
Abstract provided as attached pdf-file
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Tim Friesen (Dep. of Phys. and Astronomy University of Calgary (CA))26/05/2023, 11:00
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Prof. Stefan Ulmer (RIKEN (JP))26/05/2023, 11:40
The Standard Model of particle physics is incredibly successful and glaringly incomplete. Among the questions left open is the striking imbalance of matter and antimatter in our universe, which inspires experiments to compare the fundamental properties of matter/antimatter conjugates with high precision. The BASE collaboration at the antiproton decelerator of CERN is performing such...
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Masaki Hori (Johannes Gutenberg University Mainz and Imperial College London), Masaki Hori (Johannes Gutenberg University Mainz and Imperial College London)26/05/2023, 12:20
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Savely Karshenboym (LMU, MPQ)26/05/2023, 12:50Social
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Maninder Singh (Los Alamons National Laboratory)
Beta decay of a free neutron is the simplest form of "semi-leptonic" weak interaction and is free from nuclear structure effects. Despite the simplicity of the process, its lifetime measurement remains one of the most challenging measurements, bearing different results depending on the technique ("bottle" or "beam") [1, 2]. Another critical measurement from the decay is the correlation (Ao)...
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Dr Wei-Qiang WEN
High precision spectroscopy of the low-lying dielectronic resonances in fluorine-like Ni19+ ions was studied by employing the electron-ion merged-beams method at the heavy-ion storage ring CSRm. The measured dielectronic-recombination (DR) resonances are identified by comparison with relativistic calculations utilizing the flexible atomic code (FAC). The lowest-energy resonance at about 86 meV...
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