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Eberhard Widmann29/08/2022, 09:30
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Angela Gligorova (Austrian Academy of Sciences (AT)), Eberhard Widmann29/08/2022, 09:45
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Dr Seema Choudhury29/08/2022, 10:00Oral presentation
The rate of semitauonic and electroweak penguin decays in the B sector
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show hints of lepton-flavour universality violation. Belle and Belle II
data is well suited to probe such anomalies. The low-background
collision environment along with the possibility of partially or fully
reconstructing one of the two B mesons in the event offer high precision
measurements of semileptonic and... -
Evelina Gersabeck (University of Manchester (GB)), Evelina Mihova Gersabeck (University of Manchester (GB))29/08/2022, 10:30Oral presentation
The BESIII experiment has collected an integrated luminosity corresponding to 2.93 fb$^{-1}$ of data at 3.773 GeV, and 6.3 fb$^{-1}$ of data between 4.18 and 4.23 GeV, respectively, which allows for precision tests with D meson decays. We will present an overview of the recent results on lepton flavour universality tests with (semi-)leptonic decays of charmed mesons. We will also report the...
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Angela Papa29/08/2022, 11:30Oral presentation
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Yuri Oksuzian29/08/2022, 12:00Oral presentation
The Mu2e experiment at Fermilab will search for a neutrino-less muon to electron conversion with a single event sensitivity of ~3E-17. This is an improvement of four orders of magnitude in sensitivity over the current best limit. Mu2e will indirectly probe a broad class of New Physics models with mass scales up to 10,000 TeV. The Mu2e is currently under the construction with a goal to start...
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Prof. Sabin Stoica (CIFRA)29/08/2022, 14:00Oral presentation
International Centre for Advanced Training and Research in Physics,
P.O. Box MG12, 077125 Bucharest-Magurele, RomaniaAbstract
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Double beta decay (DBD) is a currently hot research topic as it can offer a wide range of physics investigations beyond the Standard Model (BSM). These refer to some fundamental neutrino properties, yet unknown (neutrino nature – is it a Dirac or a Majorana... -
Mr Mario Schwarz (TUM)29/08/2022, 14:25Oral presentation
abstract provided as attached pdf-file
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Dr Rüdiger Picker (TRIUMF)29/08/2022, 14:50Oral presentation
The TUCAN collaboration is building a next generation ultracold neutron (UCN) source, based on spallation neutron production using protons from TRIUMF's 500 MeV cyclotron. A large cold neutron flux is created via moderator shells of room-temperature heavy water and 20-K liquid deuterium surrounding a near-spherical volume of superfluid liquid helium-4. At around 1 K, the ultracold neutrons...
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Dr Aleksandra Wrońska (Jagiellonian University in Kraków)29/08/2022, 16:00Oral presentation
abstract provided as attached pdf-file
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Lorenz Willmann (University of Groningen/ NL)29/08/2022, 16:30Oral presentation
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Chavdar Dutsov29/08/2022, 17:00Oral presentation
At the Paul Scherrer Institute we are developing of a high precision instrument to measure the muon electric dipole moment (EDM) using the frozen-spin technique. The presence of a permanent EDM in an elementary particle implies Charge-Parity symmetry violation and, within the context of the Standard Model, the electric dipole moment of elementary particles is extremely small. However, many...
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Andrzej Kupsc (Uppsala University)30/08/2022, 09:00Oral presentation
The hyperons from charmonia decays are produced with a non-zero spin polarization that is described by one global parameter in electron-positron annihilation into hyperon-antihyperon pair. This provides a method to measure precisely parity-violating (anti)hyperon decay amplitudes and directly test CP violation. These CP tests were performed for J/psi decays into Lambda Lambdabar, Sigma+...
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Dr Longke Li30/08/2022, 09:30Oral presentation
We present recent results of charm $CP$ symmetry violation (CPV) based on about 1 ab$^{-1}$ collected at the Belle experiment, including the decay asymmetry parameters ($\alpha$) and $\alpha$-included $CP$ asymmetry ($A_{CP}^{\alpha}$) for decays of $\Lambda_c^+$ and $\Xi_c^0$ baryons, search for CPV via time-integrated $CP$ asymmetry in $D$ three-body decays and T-odd asymmetry in $D$...
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Francesca Curciarello30/08/2022, 10:00Oral presentation
KLOE and KLOE-2 full data sample, corresponding to 8 fb−1, has been collected at the Frascati DAΦNE φ–factory of INFN Laboratories and repre- sents the world largest data sample of this kind: about 2.4 × 1010 φ mesons and 8 × 109 K0K ̄ 0 entangled pairs. The neutral kaon system has unique properties such as entanglement, flavour oscillations, charge-parity (CP) and time-reversal (T) violation...
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Ben Sauer30/08/2022, 11:00Oral presentation
Abstract in pdf
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Christopher Ho30/08/2022, 11:25Oral presentation
abstract provided as attached pdf-file
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Jan Friedrich (Technische Universitaet Muenchen (DE))30/08/2022, 11:50Oral presentation
Chiral symmetry, linked to the smallness of the quark masses compared to the QCD bound states, and its breaking pattern are exploited in effective field theory to describe a multitude of phenomena by a few low-energy constants. Those concern light-meson dynamics and decays, their couplings to photons and meson-nucleon interactions. Special emphasis is given to the pion properties, in terms of...
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Sven Sturm (Max-Planck-Gesellschaft (DE))30/08/2022, 14:00Oral presentation
Experiments with single ions confined in a Penning trap enable access to a broad range of observables that are of fundamental importance for our understanding of fundamental physics. In the magnetic field of the trap, the cyclotron frequency of an ion can be determined with unique precision and gives direct access to the charge-to-mass ratio. Furthermore, we have access to the gyromagnetic...
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Paolo Crivelli (ETH Zurich (CH))30/08/2022, 14:30Oral presentation
Being purely leptonic, i.e. made of constituents which have (to the best of our knowledge) no internal structure, Muonium (M) is an excellent candidate to probe b-QED. I will present our recent measurement of the n=2 M Lamb Shift of 1047.2(2.5) MHz, which comprises an order of magnitud improvement upon the last determinations and matches with theory within one sigma. This allows us to set...
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Aleksander Gajos30/08/2022, 15:00Oral presentation
In the talk we demonstrate test of combined charge, parity, and time-reversal transformation (CPT) in the annihilations of the lightest leptonic bound system, the positronium atom. With the Jagiellonian Positron Emission Tomograph (J-PET) we have collected an unprecedented range of kinematical configurations of exclusively-recorded annihilations of the positronium triplet state...
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Michael Gericke30/08/2022, 15:25Oral presentation
The so called Standard Model is a phenomenological model, in the sense that it relies on experimental input and has been continuously refined, based on that input, for the better part of a century. It is generally accepted that the Standard Model is incomplete,for various reasons.
The Standard Model is a gauge theory, which produces floating parameters, called couplings, or "charges", for...
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Dionysis Antypas (Helmholtz Institut Mainz)31/08/2022, 09:00Oral presentation
The high measurement precision attainable in experiments within the so-called low-energy, precision frontier can be employed to carry out a range of tests of fundamental physics and search for beyond-standard-model physics. After a brief overview of precision, low-energy tests, I will discuss two related experiments. In one of these, we study isotope shifts in an optical transition in...
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Hirohiko Shimizu (Nagoya University)31/08/2022, 09:30Oral presentation
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Shinsuke Kawasaki31/08/2022, 10:00Oral presentation
Neutrons are electrically neutral and massive particles. They experience all known forces, which are electromagnetic, gravitation, weak, and strong forces. Slow neutrons with low kinetic energy are good tools for observing the effects of those interactions. They are used for various fundamental physics experiments, taking advantage of the property.
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Depending on their kinetic energy, slow... -
Prof. Federico Sanchez (Universite de Geneve (CH))31/08/2022, 11:00Oral presentation
Particle/Antiparticle asymmetry (CP violation) was discovered almost six decades ago in quark bound states. CP violation was the only experimental evidence of matter and antimatter behaving differently in the Standard Model of particle physics. The discovery of neutrino oscillations at the end of the last century opened the window for similar phenomena in leptons. It has taken the neutrino...
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Gabriela Barenboim (University of Valencia & IFIC (UV-CSIC))31/08/2022, 11:30Oral presentation
CPT symmetry, the combination of Charge Conjugation, Parity and Time reversal, is a cornerstone of our model building strategy and therefore the repercussions of its potential violation will severely threaten the most extended tool we currently use to describe physics, i.e. local relativistic quantum fields. However, limits on its conservation from the Kaon system look indeed imposing. In this...
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Anthony Onillon (Laboratoire de Physique Subatomique et des Technologies Associe)31/08/2022, 12:00Oral presentation
The KATRIN experiment is designed to measure the mass of the electron anti-neutrino by investigating the energetic endpoint of the tritium spectrum. KATRIN recently release it’s latest results and is the rst direct experiment to report a sub-eV neutrino mass limit. As a complementary result, KATRIN also reported its rst limits for eV-scale sterile neutrinos.
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The TRISTAN (TRitium... -
Juan Pedro Ochoa Ricoux31/08/2022, 12:30Oral presentation
DUNE and JUNO are two leading next-generation neutrino experiments that will address some of the most important open questions in neutrino physics. DUNE is a long baseline experiment consisting of two detectors placed in what will be the world’s most intense neutrino beam: a near detector in Fermilab near the beam source, and a much larger far detector at the Sanford Underground Research...
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31/08/2022, 13:00
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Hartmut Abele (TU Wien)31/08/2022, 14:30Oral presentation
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Chen-Yu Liu (Indiana University)31/08/2022, 15:00Oral presentation
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David Kawall31/08/2022, 15:30Oral presentation
The Fermilab muon g-2 experiment recently released its first measurement of the positive muon magnetic moment anomaly, a_mu = (g_mu-2)/2 to an accuracy of 0.46 ppm. The anomaly a_mu is of interest since it can be predicted with impressive precision and its value is sensitive, via quantum corrections, to the interactions of the muon with the other particles of the Standard Model. Comparison of...
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Vincenzo Cavasinni (Universita & INFN Pisa (IT))31/08/2022, 16:00Oral presentation
The ATLAS experiment has measured the 𝜏-lepton pair production in ultraperipheral lead–lead
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collisions, Pb+Pb Pb(𝛾 𝜏𝜏)Pb. From this measurement, constraints on the 𝜏-lepton anomalous magnetic moment, 𝑎𝜏, have been extracted. The used dataset corresponds to an integrated luminosity of 1.44 nb-1` of LHC Pb+Pb collisions at 𝑠NN = 5.02 TeV recorded by the ATLAS experiment in 2018. Selected... -
Andrew Evans (University of Calgary Dep. of Phys. and Astronomy (CA))01/09/2022, 09:00Oral presentation
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Stefan Erlewein (Max Planck Society (DE))01/09/2022, 09:30Oral presentation
Throughout its existence, the Standard Model has proven very successful in describing fundamental interactions of elementary particles. However, the asymmetry between the abundance of matter and antimatter in the universe has yet to be understood.
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The BASE experiment, located at CERN’s Antiproton Decelerator (AD) facility, measures the fundamental properties of protons and antiprotons to test... -
Dr Daniel James Murtagh (Austrian Academy of Sciences (AT))01/09/2022, 10:00Oral presentation
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Bela Majorovits (MPI for Physics), Bela Alexander Majorovits (Max Planck Society (DE))01/09/2022, 11:00Oral presentation
The QCD Axion is arguably the most elegant candidate to solve the strong CP problem and to explain missing dark matter in our universe. Some compelling theoretical models predict its mass to be around 100 μeV, a range that presently still evades experimental sensitivity. The dielectric haloscope concept has been proposed to change this. The motivation for post-inflationary dark matter axions...
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Gianluca Sarri (Queen's University Belfast)01/09/2022, 11:30Oral presentation
The LUXE experiment (LASER Und XFEL Experiment) is a new large-scale experiment in planning at DESY Hamburg. LUXE is intended to study collisions between a high-intensity optical LASER and 16.5 GeV electrons from the XFEL electron beam, as well as collisions between the optical LASER and GeV-scale, high-flux photon beams. The main physics objective of LUXE is to experimentally study processes...
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01/09/2022, 12:00
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Craig Roberts (Nanjing University)01/09/2022, 13:30Oral presentation
Atomic nuclei lie at the core of everything we can see; and at the first level of approximation, their atomic weights are simply the sum of the masses of all the neutrons and protons (nucleons) they contain. Each nucleon has a mass mN ≈ 1 GeV, i.e. approximately 2000-times the electron mass. The Higgs boson - discovered at the large hadron collider in 2012 - produces the latter, but what...
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Chiara Mariotti (INFN Torino (IT))01/09/2022, 14:00Oral presentation
The latest results on the Higgs boson properties from the ATLAS and CMS experiments will be reviewed, 10 years after its discovery and
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with 30 times larger statistics.
Searches of Higgs boson pair production will be presented.
In addition a few projections for the end of the high luminosity operation of the LHC will be shown. -
Alain Blondel (Universite de Geneve (CH))01/09/2022, 14:30Oral presentation
Three mysteries stand after the discovery of the Higgs boson: (i) the
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origin of the masses of the neutrinos; (ii) the origin of the baryon
asymmetry in the universe; and (iii) the nature
of dark matter. High energy colliders provide an exciting opportunity to
resolve these mysteries with the possible discovery of heavy neutral
leptons (HNLs), both at the HL-LHC from neutrinos produced... -
Ralf Lehnert01/09/2022, 15:30Oral presentation
Lorentz and CPT symmetry represent cornerstones of our present understanding of nature, but may be violated in various theoretical approaches to underlying physics. Testing these symmetries therefore establishes a promising avenue to search for physics beyond the Standard Model. The canonical theoretical tool to identify possible experimental signatures of such violations is an...
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Dr Zoltan Harman (Max Planck Institute for Nuclear Physics)01/09/2022, 16:00Oral presentation
In this contribution, we discuss the precision theory of the bound-electron g factor. This quantity can be measured nowadays to high precision with the combination of Penning traps and electron beam ion traps. The collaboration of theory and experiment enables impactful and detailed tests of quantum electrodynamics in a strong background field, and a competitive determination of fundamental...
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Dr Yevgeny Stadnik (Kavli IPMU, University of Tokyo)01/09/2022, 16:30Oral presentation
I discuss novel mechanisms for the generation of electric dipole moments in atoms and molecules, including via the exchange of low-mass axionlike particles between atomic electrons and nucleons [1,2], as well as via two-photon exchange processes between atomic electrons and the nucleus in paramagnetic systems [3]. I also discuss how oscillating electric dipole moments may be induced...
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Prof. Stephan Paul (Technische Universitat Munchen (DE))01/09/2022, 18:00Oral presentation
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Ekkehard Peik (Physikalisch-Technische Bundesanstalt, Braunschweig, Germany)02/09/2022, 09:00Oral presentation
We use frequency comparisons between highly accurate optical clocks for tests of fundamental principles. In particular, the 171Yb+ optical clock based on an electric octupole transition between the S-ground state and the lowest excited F-level (radiative lifetime 1.58 yr) provides a favorable combination of low systematic uncertainty and high sensitivity to relativistic effects and potential...
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Peter Fierlinger (TU München)02/09/2022, 09:30Oral presentation
Searches for electric dipole moments (EDM), axion-like particle searches, ultra-cold atom experiments in space, atomic fountains or a new neutron-antineutron oscillation search at the European Spallation Source require precisely characterized and also very small magnetic fields. Some of these experiments actually are the most accurate and precise magnetic field sensors ever...
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Menno Door (MPIK Heidelberg)02/09/2022, 10:00Oral presentation
The Penning-trap mass spectrometer PENTATRAP [1] located at the Max Planck Institute for Nuclear Physics in Heidelberg is able to determine mass-ratios of highly charged ions of long-lived nuclides with a relative uncertainty of a few ppt [2, 3]. With a broad measurement program PENTATRAP did and continues to contribute to several fields of physics, e.g. test of bound-state QED [2] with direct...
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Giovanni Dal Maso02/09/2022, 10:30Oral presentation
Currently PSI delivers the most intense continuous muon beam in the world with up to a few 10^8 μ+/s. The High Intensity Muon Beam (HiMB) project aims at developing a new target station and muon beam lines able to deliver 10^10 μ+/s, with a huge impact for low-energy, high-precision muon experiments.
While the next generation of proton drivers with beam powers in excess of the current...
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Malte Christian Wilfert02/09/2022, 11:30Oral presentation
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Takayuki Yamazaki02/09/2022, 12:00Oral presentation
abstract provided as attached pdf-file
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koichiro shimomura (KEK)02/09/2022, 12:30Oral presentation
Various measurements aiming at the precise determination of the fundamental physical quantities of muons (mass, magnetic moment) are underway at the J-PARC Materials and Life Science Experimental Facility, Muon Facility (MUSE). These include muonium HFS and 1s-2s measurements, HFS measurements of muonic helium and muon trapping. Preliminaries results have already been obtained for the first...
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Mr Andreas Jansen (TU Dresden, Institut für Kern- und Teilchenphysik)02/09/2022, 13:00Oral presentation
COMET is an experiment at the Japan Proton Accelerator Research Complex (J-PARC), which will search for coherent neutrinoless tran- sition of muons to electrons in the coulomb eld of atomic nuclei (𝜇− + N → 𝑒− + N). Since this process violates charged lepton avor conservation it is highly suppressed in the Standard Model and thus provides a promising channel to probe new physics.
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In order... -
02/09/2022, 13:30Oral presentation
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Chiara BrandensteinPoster presentation
abstract attached as PDF
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Masato Yamanaka (Yokohama National University)Poster presentation
We revisit charged lepton flavor violating (CLFV) scattering $\ell_{i}N \to \ell_{j}X$ mediated by scalar interaction. We point out that a new subprocess $\ell_{i}g \to \ell_{j}g$ via the effective interactions of CLFV mediator and gluon gives large contribution. Furthermore, in the light of quark number conservation, we consider quark pair-production processes $\ell_{i}g \to \ell_{j} Q...
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Marta Torti (Universita & INFN, Milano-Bicocca (IT))Poster presentation
The main source of systematic uncertainty on neutrino cross section measurements at the GeV scale is represented by the poor knowledge of the initial flux. The goal of cutting down this uncertainty to 1% can be achieved through the monitoring of charged leptons produced in association with neutrinos, by properly instrumenting the decay region of a conventional narrow-band neutrino beam. Large...
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Tom-Erik HaugenPoster presentation
Abstract provided as attached pdf-file
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Lilian Nowak (University of Vienna (AT))Poster 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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Marlene TuechlerPoster presentation
Kaonic atoms are ideally suited candidates to study the low-energy regime of QCD including strangeness, without the need to extrapolate to zero relative energy as for scattering experiments. The theoretical models describing the low-energy antikaon-nucleon interaction show significant differences, and experimental input is crucial to constrain them. The SIDDHARTA-2 experiment, located at the...
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Jongseok Lim (Imperial College London)Poster presentation
Despite its many successes, the Standard Model of particle physics is thought to be incomplete, because it leaves unanswered several major questions. One of these is the origin of the observed asymmetry between the amount of matter and antimatter in the visible universe. While we cannot currently explain what caused the asymmetry, we know that it requires the presence of new interactions...
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Dr Chi ZhangPoster presentation
New fundamental particles at high energy scales that have not been reached by the Large Hadron Collider (LHC) could explain the observed matter-antimatter asymmetry that cannot be understood by the Standard Model of particle physics. These hypothetical particles, if they exist, will introduce a tiny electric dipole moment on the electron (eEDM), which can be probed by extremely sensitive...
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Jasmina BesicPoster presentation
abstract provided as attached pdf-file
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Rahul Shankar (University of Ferrara and INFN)Poster presentation
The JEDI experiment is dedicated to the search for the electric dipole moment (EDM) of charged particles using storage rings, which can be a very sensitive probe of physics beyond the Standard Model. In order to reach the highest possible sensitivity, a fundamental parameter to be optimized is the Spin Coherence Time (SCT), i.e., the time interval within which the particles of the stored beam...
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Alina Weiser (Austrian Academy of Sciences (AT))Poster presentation
A positron trap is a powerful and adaptable tool for performing experiments with
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positrons and positronium. These devices use a strong magnetic field, a stepped
potential well and Nitrogen and CF4 buffer gas. Positrons are initially trapped via the
electronic excitation of N2, CF4 is added for efficient cooling via vibrational and
rotational excitations. This type of positron trap can... -
Mohamad KanafaniPoster presentation
Precision measurements in nuclear beta decay offer today a sensitive window to search for new physics beyond the standard electroweak model. The new physics signatures can be parametrized in terms of exotic phenomenological scalar and tensor interactions, which induce deviations on sensitive observables relative to their standard model predictions. In the past few years, it has been recognized...
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Saad SiddiquePoster presentation
The matter-antimatter asymmetry may be explained through CP-violation by observing a permanent electric dipole moment (EDM) of subatomic particles. An advanced approach to measure the EDM of charged particles is to apply a unique method of "Frozen spin" on a polarized beam in an accelerator. To increase the experimental precision step by step and to study systematic effects, the EDM experiment...
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Charles GlaserPoster presentation
Electroweak
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Lepton universality
Standard Model
Pion decay
V-A -
Saiva Huck (CERN, Hamburg University (DE))Poster presentation
abstract provided as attached pdf-file
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Marcus Bumbar (SMI), Viktoria Kraxberger (Stefan Meyer Institute for Subatomic Physics of the Austrian Academy of Sciences)Poster 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 (pbar-A) annihilation one of the main processes of...
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Amit Nanda (Austrian Academy of Sciences (AT))Poster presentation
The Standard Model Extension (SME) [1, 2] serves as a motivation for many experiments
performing precision tests of the CPT symmetry. It includes all CPT and Lorentzviolating
operators in addition to the Standard Model Lagrangian and hence, manifesting
Lorentz and CPT violating signals in different experimental searches.According to the SME, the shifts in the hyper-fine energy levels of...
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Carina Killian (Austrian Academy of Sciences (AT))Poster presentation
At very low energies, an atom above a horizontal surface can experience quantum reflection due to the attractive Casimir-Polder potential. The quantum reflection holds the atom against gravity and leads to gravitational quantum states (GQS), in analogy to what has been observed with ultracold neutrons [1]. The GRASIAN-collaboration pursues the first measurement of GQS of atomic hydrogen. For...
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Alexander Boeschoten (1Van Swinderen Institute, Groningen, The Netherlands)Poster presentation
Doing high-precision measurements on molecules is a promising way to explore physics beyond the Standard Model of particle physics. One such measurement is the search for the P,T-violating electric dipole moment of the electron (eEDM). The effect if the eEDM is expected to be strongly enhanced in diatomic molecules with one heavy atom, because of small rotational splittings and an enhanced...
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