000003746 001__ 3746
000003746 005__ 20230905204138.0
000003746 037__ $$aBELLE2-TALK-CONF-2023-097
000003746 041__ $$aeng
000003746 088__ $$aBELLE2-TALK-DRAFT-2023-099
000003746 100__ $$aKazuki Kojima
000003746 245__ $$aRecent Belle II results on semileptonic B decays and tests of lepton-flavor universality
000003746 260__ $$aLepton Photon 2023$$c2023-07-18
000003746 300__ $$amult. p
000003746 500__ $$a15 minutes (12 minutes presentation + 3 minutes Q&A) https://www.leptonphoton2023.org/
000003746 520__ $$aSemileptonic $B$-meson decays allow for determining the magnitudes of the CKM matrix parameters $|V_{cb}|$ and $|V_{ub}|$, two fundamental parameters of the SM flavor sector and to probe the excess rate of semitauonic $B$ decays, which has been consistently above expectations in recent years. Belle II analyses use both exclusive decays such as $B \rightarrow D^{*}\ell^{-}\bar{\nu}_{\ell}$ and $B \rightarrow \pi\ell^{-}\bar{\nu}_{\ell}$ , $X_{c}\ell^{-}\bar{\nu}_{\ell}$ or $X_{u}\ell^{-}\bar{\nu}_{\ell}$ inclusive or final states restricted in phase space. The low-background collision environment, along with the possibility of partially or fully reconstructing one of the two $B$ mesons in the event, offer precisions on $|V_{cb}|$ and $|V_{ub}|$ approaching that of world-best results and provides unique probes of lepton-flavor universality violation.
000003746 6531_ $$aSemileptonic
000003746 6531_ $$aSemileptonic B decays
000003746 6531_ $$aVcb
000003746 6531_ $$aVub
000003746 6531_ $$aAFB
000003746 6531_ $$aR(D*)
000003746 6531_ $$aLFV
000003746 6531_ $$aLFUV
000003746 6531_ $$aFEI
000003746 6531_ $$aLP
000003746 6531_ $$aLP2023
000003746 6531_ $$aLepton Photon
000003746 6531_ $$aLepton Photon 2023
000003746 8560_ $$fkojima@hepl.phys.nagoya-u.ac.jp
000003746 8564_ $$uhttps://docs.belle2.org/record/3746/files/BELLE2-TALK-CONF-2023-097.pdf