Vietnam Flavour Physics Conference 2025

Session

Charged Lepton Flavour Physics

Aug 19, 2025, 8:30 AM

International Centre for Interdisciplinary Science and Education (ICISE)

2. Overview of charged lepton flavor violation

Masato Yamanaka (Shikoku Gakuin University)

8/19/25, 8:30 AM

Theoretical

The standard model of particle physics is far from accounting for mysteries about our universe, --e.g., what is origin of neutrino masses and their hierarchy? Why is there so little antimatter in this world? etc. -- and it must be extended to a more fundamental description of nature. Such new physics models allow Charged Lepton Flavor Violating (CLFV) reactions which are exactly forbidden in...

45. MEG II

Toshiyuki Iwamoto (The University of Tokyo)

8/19/25, 9:05 AM

46. Mu3e

Dr Tamasi Rameshchandra Kar (Physics Institute, Heidelberg University.)

8/19/25, 9:30 AM

7. The COMET Experiment: Searching for The μ-e Conversion Signal at J-PARC

Truong Nguyen (FPT University - Da Nang)

8/19/25, 10:20 AM

Lepton Number & Flavour

Experimental

Charged lepton flavor violating (CLFV) is one of the powerful tools to search for the physics beyond the Standard Model. The COMET experiment will search for the CLFV process μ− + N(Z, A) → e− + N(Z,A) in Al with single event sensitivity of 10-15 at Phase-I and 10-17 at Phase-II, which is two orders and four orders of magnitude respectively improvement on the current upper limited set by...

34. Lepton flavor violating decay of true muonium:  $(\mu^+ \mu^-) \to \mu^\pm e^\mp$

Ryotaro Minato (Yokohama National University)

8/19/25, 10:45 AM

Lepton Number & Flavour

Theoretical

We propose a new charged lepton flavor violating (CLFV) process: the decay of true muonium $(\mu^+ \mu^-)$ into a lepton pair of different flavors, $\mu^\pm e^\mp$. This purely leptonic, hadron-free process provides a clean signature and enables the probing of both photonic dipole and four-fermion CLFV interactions. Since CLFV mediators indirectly appear in most CLFV processes, it is important...

47. Electroweak penguin and lepton-flavour violating B decays to final states with missing energy at Belle II

Roberta Volpe (Charles University Prague)

8/19/25, 11:05 AM

The Belle and Belle II experiments have collected a 1.2 ab$^{-1}$ sample of $e^+e^- \to B\bar B$ collisions at a centre-of-mass energy corresponding to the $\Upsilon(4S)$ resonance. These data, with low particle multiplicity and constrained initial state kinematics, are an ideal environment to search for rare electroweak penguin $B$ decays and lepton-flavour-violating decays to final states...

48. Muon g−2: Theory

Massimo Passera (INFN Padova)

8/19/25, 11:25 AM

28. Final Result from the Fermilab Muon g-2 Experiment

Siew Yan Hoh (Shanghai Jiao Tong University)

8/19/25, 1:30 PM

Other

Experimental

In quantum field theory, the magnetic moment of a charged spin-$\frac{1}{2}$ particle such as the muon deviates slightly from the Dirac value of 2 due to quantum loop corrections involving virtual particles. This deviation, known as the anomalous magnetic moment, $a = (g - 2)/2$, is sensitive to all quantum effects, including potential contributions from particles beyond the Standard Model...

49. The J-PARC Muon g−2 Experiment

Gerco Onderwater (Maastricht University)

8/19/25, 1:55 PM

50. Discussion

Gerco Onderwater (Maastricht University), Dr Masato Yamanaka (Hiroshima Institute of Technology), Massimo Passera (INFN Padova), Michael Ratz (University of California, Irvine), Nazila Mahmoudi (Lyon University), Prof. Yoshi Uchida (Imperial College London)

8/19/25, 2:15 PM