Particle Theory Seminars

The particle theory seminars are organized by the Theory Group of the Laboratory for Particle Physics (LTP) at PSI.

Upcoming theory seminars will be announced here.

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The last seminar took place on Friday, 2.8.2024, at 11:00 in WHGA/001

Speaker:  Prof. Dr. Vincenzo Cirigliano (INT, U. Washington)

Title: The first row of the CKM matrix: puzzles and perspectives

Abstract

In this talk I will discuss the so-called Cabibbo universality test of charged-current weak interactions. I will start with an overview of the paths to precisely extract the elements of the first row of the Cabibbo-Kobayashi-Maskawa (CKM) matrix. I will then describe in some detail the extraction of Vud (the cosine of the Cabibbo angle) from pion, neutron, and nuclear beta decays, as well as recent efforts to reduce the theoretical uncertainty using effective field theory methods. Finally, I will review the existing tensions in the Cabibbo universality test and discuss possible explanations of these tensions in terms of physics beyond the Standard Model.

 DateSpeakerTitleInstituteTime/place
02.08.24V. CiriglianoThe first row of the CKM matrix: puzzles and perspectives INT, U. WashingtonFriday, 11:00 WGHA/001
04.07.24A. E. ThomsenGauge-Fixing in EFT Matching CalculationsAEC, U. BernThursday, 11:15 OSGA/EG6b
28.04.22A. ShindlerUnravelling Matter-Antimatter Asymmetry in the UniverseMichigan State UniversityThursday, 10:00
OFLG/402
29.06.21T. PlehnGlobal SMEFT Analyses for the LHCU. HeidelbergTuesday, 17:00
online
01.06.21N. SchärAutomation of NNLO Amplitude Construction in OpenLoopsPSITuesday, 17:00
online
27.04.21L. VernazzaOn the factorization of scattering processes near threshold at next-to-leading powerU. TorinoTuesday, 17:00
online
13.04.21M. SpiraHiggs Boson Production and Decay at Hadron CollidersPSITuesday, 17:00
online
02.12.20P. MonniParton showers beyond logarithmic accuracyCERNWednesday 11:30
online
20.11.20M. GrazziniDifferential predictions for ttbar at NNLOUniversity of ZürichFriday 11:30
online
21.10.20G. StagnittoThe partonic structure of the electron at the next-to-leading logarithmic accuracy in QEDUniversity of ZürichWednesday 11:30
online
30.09.20M. RiembauEFT anomalous dimensions from the S-matrixUniversity of Genève/EPFLWednesday 11:30
WHGA/U129
13.02.20L. VernazzaHadronic B DecaysINFN TorinoThursday 16:00, WHGA/U129
21.01.20M. SchreckQuantum gravity phenomenology: Testing CPT- and Lorentz invarianceUniversidade Federal do MaranhaoTuesday 15:00, WHGA/001
29.10.19P. TorrielliInfrared subtraction and factorisation beyond NLO in QCDUniversity of TurinTuesday 14:00, WBGB/021
10.04.18O. TomalakTwo-photon exchange corrections to elastic lepton-proton scattering and atomic spectroscopyUniversity of MainzTuesday 11:30, WBGB/020
14.03.18N. MichelHyperfine structure of heavy muonic atomsMPI for Nuclear Physics HeidelbergWednesday 14:00, WHGA/121
04.12.17J. HeeckNew Perspectives on Lepton Flavor ViolationUniversité Libre de BruxellesMonday 14:00, WBGB/020
24.10.17M. SpiraHiggs Boson Decay and Production at Hadron CollidersPSITuesday 15:00, WBGB/020
04.10.17M. ZollerA new method for one-loop amplitude generation and reduction in OpenLoopsZurich UniversityWednesday 11:30, WBGB/020
22.09.17L. CalibbiTwo ways of connecting flavour to Dark Matter: flavour portals and axiflavonITP BeijingFriday 15:00, WHGA/121
07.09.17R. MandalRare B decays and new physicsIMS ChennaiThursday 15:00, WHGA/121
11.07.17M. BlankeSimplified models of quark-flavoured dark matter beyond MFVITP KarlsruheTuesday 15:00, WHGA/121
12.06.17C. FrugiueleAtomic probes of new physicsWeizmann Inst.Monday 16:00, WBWA/210
26.01.17D. StöckingerHiggs boson mass: the quest for precise predictions in SUSY modelsTU DresdenThursday 11:30, WBGB/021
16.12.16T. GeibConversion of Bound Muons: Lepton Flavour and Number ViolationMPI MunichFriday 11:00, WHGA/121
28.11.16O. FischerTesting the origin of neutrino masses at future high-energy collidersBaselMonday 11:00, WBGB/21
14.11.16A. GreljoR(D*) anomaly and its implications for LHCUZHMonday 11:00, WHGA/121
19.11.14G. LuisoniNLO Computations with GoSam: from LHC to muon decayMPI MunichWednesday 10:30, WBGB/020
11.02.14C. JiNuclear polarization effects in muonic atomsTRIUMFTuesday 11:30, WBGB/021
03.12.13M. PrunaThe impact of dimension 6 effective vertices in LFV muonic transitionsPSITuesday 11:30, WBGB/021
26.11.13T. RobensHiggs Singlet extension in the light of the LHC discoveryTU DresdenTuesday 11:30, WBGB/021
15.10.13R. GröberVector-like fermions in Composite Higgs ModelsITP KarlsruheThursday 11:30, WBGB/020
17.09.13J. DiazLorentz symmetry breaking: phenomenology and experimentsIndianaTuesday 11:30, WBGB/019
30.07.13M. PospelovLow-energy constraints on muon and tau neutral current parity-violating processesPerimeterTuesday 11:30, WBGB/019
13.12.12S. PlätzerMatching, merging and all thatDESYThursday 11:30, WBGB/021
06.12.12A. CarmonaNew Production Mechanism for Composite Higgs at the LHCETHZThursday 11:30, WBGB/021
22.10.12E. PopendaKorrekturen nächst-führender Ordnung in supersymmetrischer QCD zur Squark-Paarproduktion am LHCKarlsruhe/PSIMonday 14:30, WBGB/021
11.09.12L. HosekovaCorrections to the Production of Two Leptons Pairs via Vector-Boson Fusion at LHCValenciaTuesday 11:30, WBGA/B16