Particle Theory Seminars
The particle theory seminars are organized by the Theory Group of the Laboratory for Particle Physics (LTP) at PSI.
The next seminar takes place on Thursday 28.04 2022 at 10:00 in OFLG/402
Speaker: Andrea Shindler (Michigan State University)
Title: Unravelling Matter-Antimatter Asymmetry in the Universe
Abstract
The observed baryon asymmetry in the universe cannot be reconciled with the current form of the Standard Model (SM) of particle physics. The amount of CP-violation stemming from the Cabibbo-Kobayashi-Maskawa matrix is not sufficient to explain the observed matter-antimatter asymmetry. Historically, one of the first systems to be studied in the search for CP-violation is the electric dipole moment (EDM) of the neutron. The contribution to the neutron EDM coming from the SM is several orders of magnitude smaller than the current experimental bound, thus providing a unique background-free window for potential discovery of physics Beyond the Standard Model (BSM).
After a brief summary of the current status for experimental searches of a neutron EDM, I describe the different CP-violating sources and the challenges that present a calculation of the corresponding hadronic matrix elements. I then proceed detailing recent results obtained, with my collaborators, on the neutron EDM with a specific focus on the main theoretical and numerical tool used: the gradient flow. I conclude with near-term goals, challenges and an optimistic view into the future.
Date | Speaker | Title | Institute | Place |
---|---|---|---|---|
29.06.21 | T. Plehn | U. Heidelberg | Tuesday, 17:00 online |
|
01.06.21 | N. Schär | PSI | Tuesday, 17:00 online |
|
27.04.21 | L. Vernazza |
On the factorization of scattering processes near threshold at next-to-leading power |
U. Torino | Tuesday, 17:00 online |
13.04.21 | M. Spira | Higgs Boson Production and Decay at Hadron Colliders | PSI |
Tuesday, 17:00 |
02.12.20 | P. Monni | Parton showers beyond logarithmic accuracy | CERN |
Wednesday 11:30 |
20.11.20 | M. Grazzini | Differential predictions for ttbar at NNLO | University of Zürich |
Friday 11:30 |
21.10.20 | G. Stagnitto | The partonic structure of the electron at the next-to-leading logarithmic accuracy in QED | University of Zürich |
Wednesday 11:30 |
30.09.20 | M. Riembau | EFT anomalous dimensions from the S-matrix | University of Genève/EPFL |
Wednesday 11:30 |
13.02.20 | L. Vernazza | Hadronic B Decays | INFN Torino | Thursday 16:00, WHGA/U129 |
21.01.20 | M. Schreck | Quantum gravity phenomenology: Testing CPT- and Lorentz invariance | Universidade Federal do Maranhao | Tuesday 15:00, WHGA/001 |
29.10.19 | P. Torrielli | Infrared subtraction and factorisation beyond NLO in QCD | University of Turin | Tuesday 14:00, WBGB/021 |
10.04.18 | O. Tomalak | Two-photon exchange corrections to elastic lepton-proton scattering and atomic spectroscopy | University of Mainz | Tuesday 11:30, WBGB/020 |
14.03.18 | N. Michel | Hyperfine structure of heavy muonic atoms | MPI for Nuclear Physics Heidelberg | Wednesday 14:00, WHGA/121 |
04.12.17 | J. Heeck | New Perspectives on Lepton Flavor Violation | Université Libre de Bruxelles | Monday 14:00, WBGB/020 |
24.10.17 | M. Spira | Higgs Boson Decay and Production at Hadron Colliders | PSI | Tuesday 15:00, WBGB/020 |
04.10.17 | M. Zoller | A new method for one-loop amplitude generation and reduction in OpenLoops | Zurich University | Wednesday 11:30, WBGB/020 |
22.09.17 | L. Calibbi | Two ways of connecting flavour to Dark Matter: flavour portals and axiflavon | ITP Beijing | Friday 15:00, WHGA/121 |
07.09.17 | R. Mandal | Rare B decays and new physics | IMS Chennai | Thursday 15:00, WHGA/121 |
11.07.17 | M. Blanke | Simplified models of quark-flavoured dark matter beyond MFV | ITP Karlsruhe | Tuesday 15:00, WHGA/121 |
12.06.17 | C. Frugiuele | Atomic probes of new physics | Weizmann Inst. | Monday 16:00, WBWA/210 |
26.01.17 | D. Stöckinger | Higgs boson mass: the quest for precise predictions in SUSY models | TU Dresden | Thursday 11:30, WBGB/021 |
16.12.16 | T. Geib | Conversion of Bound Muons: Lepton Flavour and Number Violation | MPI Munich | Friday 11:00, WHGA/121 |
28.11.16 | O. Fischer | Testing the origin of neutrino masses at future high-energy colliders | Basel | Monday 11:00, WBGB/21 |
14.11.16 | A. Greljo | R(D*) anomaly and its implications for LHC | UZH | Monday 11:00, WHGA/121 |
19.11.14 | G. Luisoni | NLO Computations with GoSam: from LHC to muon decay | MPI Munich | Wednesday 10:30, WBGB/020 |
11.02.14 | C. Ji | Nuclear polarization effects in muonic atoms | TRIUMF | Tuesday 11:30, WBGB/021 |
03.12.13 | M. Pruna | The impact of dimension 6 effective vertices in LFV muonic transitions | PSI | Tuesday 11:30, WBGB/021 |
26.11.13 | T. Robens | Higgs Singlet extension in the light of the LHC discovery | TU Dresden | Tuesday 11:30, WBGB/021 |
15.10.13 | R. Gröber | Vector-like fermions in Composite Higgs Models | ITP Karlsruhe | Thursday 11:30, WBGB/020 |
17.09.13 | J. Diaz | Lorentz symmetry breaking: phenomenology and experiments | Indiana | Tuesday 11:30, WBGB/019 |
30.07.13 | M. Pospelov | Low-energy constraints on muon and tau neutral current parity-violating processes | Perimeter | Tuesday 11:30, WBGB/019 |
13.12.12 | S. Plätzer | Matching, merging and all that | DESY | Thursday 11:30, WBGB/021 |
06.12.12 | A. Carmona | New Production Mechanism for Composite Higgs at the LHC | ETHZ | Thursday 11:30, WBGB/021 |
22.10.12 | E. Popenda | Korrekturen nächst-führender Ordnung in supersymmetrischer QCD zur Squark-Paarproduktion am LHC | Karlsruhe/PSI | Monday 14:30, WBGB/021 |
11.09.12 | L. Hosekova | Corrections to the Production of Two Leptons Pairs via Vector-Boson Fusion at LHC | Valencia | Tuesday 11:30, WBGA/B16 |