Conveners
WG 4
- Yuki Fujii (Monash University)
WG 4
- Frederik Wauters (Universität Mainz)
WG 4
- Yuki Fujii (Monash University)
WG 4
- Frederik Wauters (Universität Mainz)
WG 4
- Yuri Oksuzian (Argonne National Lab)
Description
https://kassiopeagroup.zoom.us/j/89432151923?pwd=dzB2RG5JOGRmeGRETGJ5Z2lTeFB1QT09
The MEG II experiment at Paul Scherrer Institute (PSI) in Switzerland aims to achieve a sensitivity of $6\times10^{-14}$ on the charged lepton flavor violating decay $\mu \rightarrow e \gamma$. The current upper limit on this decay is $4.2\times10^{-13}$ at 90 % C.L., set by the first phase of MEG. This limit was set using the PSI muon beam at a reduced intensity, $3\times10^7~\mu^+/$s, to...
The Mu3e experiment is designed to search for the lepton flavor violating decay $\mu \rightarrow e^+ e^+ e^-$.
The ultimate aim of the experiment is to reach a branching ratio sensitivity of 10$^{−16}$.
The experiment is located at the Paul Scherrer Institute (Switzerland) and an existing beam line providing 10$^{8}$ muons per second will allow to reach a sensitivity of a few 10$^{−15}$ in...
he Mu2e experiment, under construction at Fermilab, will search for the neutrinoless coherent conversion of the muon into an electron in the field of an aluminum nucleus. This Charged Lepton Flavor Violating (CLFV) process has a very clear signature, a single monoenergetic electron with energy slightly below the muon rest mass. The Mu2e experiment aims to improve by four orders of magnitude...
The DeeMe experiment aims to search for one of the charged lepton flavor violating processes, muon to electron conversion in the field of a nucleus. Our goal is to measure the process with a single event sensitivity of $1 \times 10^{-13}$ for a graphite target with a novel method, with which the final sensitivity could reach down to a level of $10^{-15}$ for a silicon carbide target. That is...
Muon to electron conversion in a muonic atom is a process of charged lepton flavor violation (CLFV). It is not allowed in the Standard Model (SM) and known to be one of the best processes to search for new physics beyond the SM. The COMET experiment aims to search for this process at J-PARC with single-event sensitivity of $3\times10^{-17}$, which is about 10,000 improvement over the current...
The NA62 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2016-2018. This sample provides sensitivities to rare decays with branching ratios as low as 10$^{-11}$. Results from searches for lepton flavour/number violating decays of the charged kaon and the neutral pion to final states containing a lepton pair based on this...
Extensive tests of standard model predictions are carried on by the CMS experiment at the CERN LHC. The observation of the violation of lepton number conservation would certainly be a signature of new physics beyond the standard model. The talk will review various tests of lepton universality and the status of the searches for charged lepton violation at CMS.
Tests of lepton flavour universality are particularly sensitive to the presence of physics beyond the Standard Model. Recent results and future prospects with semileptonic and rare heavy flavour decays at LHCb are presented.
The Muon g-2 experiment E989 at Fermilab measures the anomalous magnetic moment of the muon $a_\mu$ with improved precision compared to the Brookhaven (E821) experiments. The Brookhaven results are in tension with the Standard Model by more than $3\sigma$. The determination of $a_\mu$ requires the measurement of both the muon anomaly frequency $\omega_a$ and the magnetic field B that confines...
The presence of a permanent electric dipole moment (EDM) in any elementary particle implies CP violation and thus could help explain the matter-antimatter asymmetry observed in our universe. Within the context of the Standard Model, EDMs of SM particles are extremely small. However, in many beyond SM theories, EDMs could be within experimental reach in the near future. Recently, muon EDM is of...
The muon anomalous magnetic moment, $a_\mu=\frac{g-2}{2}$, can be both measured and computed with high precision, therefore it can provide an important test of the Standard Model and it is a sensitive probe for new physics.
The E989 Muon $g-2$ Experiment at Fermilab aims to measure $a_\mu$ with a precision of 140 parts per billion, four time more precisely than the previous experiment at...
In light of the recent FNAL g-2 result, the most up to date Standard Model value of the muon anomalous magnetic moment will be discussed.
A hydrogen-like atom consisting of a positive muon and an electron is known as muonium. It is an ideal two-body system to test bound-state theory and fundamental symmetries. The MuSEUM collaboration aims to obtain the hyperfine structure (HFS) in muonium and the muon-to-electron mass ratio, which is necessary to determine the muon's anomalous magnetic moment. Our goal is to exceed the...
