Conveners
Session 2
- Alberto Lusiani (Scuola Normale Superiore)
We present the first theoretical prediction of the production rate of $1^{-+}$ light hybrid meson $\eta_1$ in $J/\psi$ radiative decays. In the $N_f = 2$ lattice QCD formalism with the pion mass $m_\pi\approx 350$ MeV, the related electromagnetic multipole form factors are extracted from the three-point functions that involve necessarily quark annihilation diagrams, which are calculated...
The Muon g-2/EDM experiment at J-PARC (E34) aims to measure muon g-2 and EDM with different approach from FNAL and BNL Muon g-2 experiments. The technical design of the experiment has been completed, and construction of the experiment has started. The budget is being requested to start the data taking in 2027. In the first phase, the measurement of g-2 with a precision of 0.45 ppm is expected...
The latest measurement of the muon g-2 announced at Fermilab exhibits a 4.2$\sigma$ discrepancy from the currently accepted Standard Model prediction. The main source of uncertainty on the theoretical value is represented by the leading order hadronic contribution $a_{\mu}^{HLO}$, which is traditionally determined through a data-driven dispersive approach. A recent calculation of...
The CERN MUonE experiment aims at a new and independent determination of the leading order correction to the muon anomalous magnetic moment, through a high-precision measurement of the hadronic contribution to the running of the QED coupling constant in elastic $\mu e\to\mu e$ events, by exploiting 160 GeV muons scattering on atomic electrons. The required precision in the measurement of the...
