000002094 001__ 2094
000002094 005__ 20200911112927.0
000002094 037__ $$aBELLE2-CONF-PH-2020-011
000002094 041__ $$ager
000002094 100__ $$aMaximilian Welsch
000002094 245__ $$aMeasurement of Hadronic Mass Moments in B->Xclv Decays at Belle II
000002094 260__ $$a$$c1993-09-01
000002094 300__ $$amult. p
000002094 520__ $$aWe present measurements of the first six hadronic mass moments in semileptonic $B \rightarrow X_c \ell \nu $ decays.     The hadronic mass moments, together with other observables of inclusive $B$  decays, can be used to determine the CKM matrix element $\abs{V_{cb}}$ and mass of the $b$-quark $m_b$ in the context of Heavy Quark Expansions of QCD.     The Belle~II data recorded at the $\Upsilon (4S)$ resonance in 2019 and 2020 (March-July), corresponding to an integrated luminosity of $34.6\;\mathrm{fb}^{-1}}, is used for this measurement.     The decay $\Upsilon (4S) \rightarrow B \overline{B}$ is reconstructed by applying the hadronic tagging algorithm provided by the Full Event Interpretation to fully reconstruct one $B$ meson. The second $B$ meson is reconstructed inclusively by selecting a high-momentum lepton.     The $X_c$ system is identified by the remaining reconstructed tracks and clusters in the electromagnetic calorimeter.     We report preliminary results for the hadronic mass moments $\langle M_X^n \rangle $ with $n=1,\dots,6$, measured as a function of a lower cut on the lepton momentum in the signal $B$ rest frame.
000002094 700__ $$aFlorian Bernlochner
000002094 8560_ $$fmaximilian.welsch@desy.de
000002094 8564_ $$uhttps://docs.belle2.org/record/2094/files/BELLE2-CONF-PH-2020-011.pdf