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263 results on '"Leboucher R"'

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1. \boldmath Measurement of {\boldmath $B \to K{}^{*}(892)\gamma$} decays at Belle~II

2. Measurement of the time-integrated CP asymmetry in $D^{0}\rightarrow K^{0}_{S}K^{0}_{S}$ decays using Belle and Belle II data

3. Model-independent measurement of $D^0$-$\overline{D}{}^0$ mixing parameters in $D^0\rightarrow K^0_{S}\pi^+\pi^-$ decays at Belle and Belle II

4. Observation of time-dependent $CP$ violation and measurement of the branching fraction of $B^0 \to J/\psi \pi^0$ decays

5. Search for $C\!P$ violation in $D^+_{(s)}\to{}K_{S}^{0}K^{-}\pi^{+}\pi^{+}$ decays using triple and quadruple products

6. Determination of $|V_{ub}|$ from simultaneous measurements of untagged $B^0\to\pi^- \ell^+ \nu_{\ell}$ and $B^+\to\rho^0 \ell^+\nu_{\ell}$ decays

7. Measurement of $CP$ asymmetries in $B^0 \to K^0_S \pi^0 \gamma$ decays at Belle II

8. Measurement of branching fractions, CP asymmetry, and isospin asymmetry for $\boldsymbol{B\rightarrow\rho\gamma}$ decays using Belle and Belle II data

9. Search for the baryon number and lepton number violating decays $\tau^-\to \Lambda\pi^-$ and $\tau^-\to \bar{\Lambda}\pi^-$ at Belle II

10. Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment

11. Measurement of the branching fractions of $\bar{B}\to D^{(*)} K^- K^{(*)0}_{(S)}$ and $\bar{B}\to D^{(*)}D_s^{-}$ decays at Belle II

12. Measurements of the branching fractions of $\Xi_{c}^{0}\to\Xi^{0}\pi^{0}$, $\Xi_{c}^{0}\to\Xi^{0}\eta$, and $\Xi_{c}^{0}\to\Xi^{0}\eta^{\prime}$ and asymmetry parameter of $\Xi_{c}^{0}\to\Xi^{0}\pi^{0}$

13. Search for the decay $B^{0}\to\gamma\gamma$ using Belle and Belle II data

14. Measurement of the energy dependence of the $e^+e^- \to B\bar{B}$, $B\bar{B}{}^*$, and $B^*\bar{B}{}^*$ cross sections at Belle~II

15. Test of light-lepton universality in $\tau$ decays with the Belle II experiment

16. Search for lepton-flavor-violating $\tau^- \to \mu^-\mu^+\mu^-$ decays at Belle II

17. Measurement of the branching fraction of the decay $B^- \to D^0 \rho(770)^-$ at Belle II

18. Search for Rare $b \to d\ell^+\ell^-$ Transitions at Belle

19. Measurement of the $e^+e^- \to \pi^+\pi^-\pi^0$ cross section in the energy range 0.62-3.50 GeV at Belle II

20. Search for a $\mu^+\mu^-$ resonance in four-muon final states at Belle II

21. Measurement of $CP$ asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays at Belle II

22. New graph-neural-network flavor tagger for Belle II and measurement of $\sin2\phi_1$ in $B^0 \to J/\psi K^0_\text{S}$ decays

23. Measurement of $CP$ asymmetries in $B^0\to\eta'K^0_s$ decays at Belle II

24. Study of $\Upsilon(10753)$ decays to $\pi^{+}\pi^{-}\Upsilon(nS)$ final states at Belle II

25. A test of lepton flavor universality with a measurement of $R(D^{*})$ using hadronic $B$ tagging at the Belle II experiment

26. Search for the $e^+e^-\to\eta_{b}(1S)\omega$ and $e^+e^-\to\chi_{b0}(1P)\omega$ processes at $\sqrt{s}=10.745\,\mathrm{GeV}$

27. Silicon Vertex Detector of the Belle II Experiment

28. Evidence for $B^{+}\to K^{+}\nu\bar{\nu}$ decays

29. First Measurement of $R(X_{\tau/\ell})$ as an Inclusive Test of the $b \to c \tau \nu$ Anomaly

30. Measurement of branching fractions and direct $CP$ asymmetries for $B \to K\pi$ and $B\to\pi\pi$ decays at Belle II

31. Determination of $|V_{cb}|$ using $\overline{B}^0\to D^{*+}\ell^-\bar\nu_\ell$ decays with Belle II

32. Measurement of the energy dependence of the e+e−→BB¯BB¯∗B∗B¯∗, BB¯BB¯∗B∗B¯∗, and BB¯BB¯∗B∗B¯∗ cross sections at Belle II

33. Measurements of the branching fractions of Ξc0→Ξ0π0Ξc0→Ξ0ηΞc0→Ξ0η′Ξc0→Ξ0π0, Ξc0→Ξ0π0Ξc0→Ξ0ηΞc0→Ξ0η′Ξc0→Ξ0π0, and Ξc0→Ξ0π0Ξc0→Ξ0ηΞc0→Ξ0η′Ξc0→Ξ0π0 and asymmetry parameter of Ξc0→Ξ0π0Ξc0→Ξ0ηΞc0→Ξ0η′Ξc0→Ξ0π0

34. Search for lepton-flavor-violating τ−→ μ−μ+μ− decays at Belle II

35. Measurement of branching-fraction ratios and $CP$ asymmetries in $B^{\pm} \to D_{CP\pm}K^{\pm}$ decays at Belle and Belle II

36. Tests of light-lepton universality in angular asymmetries of $B^0 \to D^{*-} \ell \nu$ decays

37. Measurement of $CP$ asymmetries in $B^0\to \phi K^0_S$ decays with Belle II

38. Search for a $\tau^+\tau^-$ resonance in $e^{+}e^{-}\rightarrow \mu^{+}\mu^{-} \tau^+\tau^-$ events with the Belle II experiment

39. Measurement of $C\!P$ asymmetries and branching-fraction ratios for $B^\pm \to DK^\pm$ and $D\pi^\pm$ with $D\to K^0_{\rm S} K^\pm\pi^\mp$ using Belle and Belle II data

40. Search for a long-lived spin-0 mediator in $b\to s$ transitions at the Belle II experiment

41. Precise measurement of the $D^+_s$ lifetime at Belle II

42. Measurement of the $\tau$-lepton mass with the Belle~II experiment

43. Measurement of $C\!P$ violation in $B^{0}\rightarrow K_{S}^{0}\pi^{0}$ decays at Belle II

44. Search for lepton-flavor-violating $\tau^- \to \ell^-\phi$ decays in 2019-2021 Belle II data

45. Observation of ${B\to D^{(*)} K^- K^{0}_S}$ decays using the 2019-2022 Belle II data sample

46. Novel method for the identification of the production flavor of neutral charmed mesons

47. Measurement of the branching fraction and $\it CP$ asymmetry of $B^{0} \rightarrow \pi^{0} \pi^{0}$ decays using $198 \times 10^6$ $B\overline{B}$ pairs in Belle II data

48. Measurement of the branching fractions of B¯KS∗0B¯Ds− → D(*)K−B¯KS∗0B¯Ds− and B¯KS∗0B¯Ds− → D(*)B¯KS∗0B¯Ds− decays at Belle II

49. Test of light-lepton universality in τ decays with the Belle II experiment

50. Study of Υ(10753) decays to π+π−Υ(nS) final states at Belle II

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