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CERN Document Server 5 záznamov nájdených  Hľadanie trvalo 0.67 sekúnd. 
1.
Measurements of partial branching fractions of inclusive B→Xuℓ+νℓ decays with hadronic tagging / Belle Collaboration
We present measurements of partial branching fractions of inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays using the full Belle data set of 711 fb$^{-1}$ of integrated luminosity at the $\Upsilon(4S)$ resonance and for $\ell = e, \mu$. Inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays are CKM suppressed and measurements are complicated by the large background from CKM-favored $B \to X_c \, \ell^+\, \nu_{\ell}$ transitions, which have a similar signature. [...]
arXiv:2102.00020; Belle Preprint 2020-22; KEK Preprint 2020-39.- 2021-07-01 - 34 p. - Published in : Phys. Rev. D 104 (2021) 012008 Fulltext: PDF;
2.
Measurement of Michel Parameters ($\bar\eta$, $\xi\kappa$) in the radiative leptonic decay of tau at Belle / Belle Collaboration
We present the first measurement of the Michel parameters $\bar{\eta}$ and $\xi\kappa$ in the radiative leptonic decay of the $\tau$ lepton using 703 f$\mathrm{b}^{-1}$ of data collected with the Belle detector at the KEKB $e^+e^-$ collider. The Michel parameters are measured by an unbinned maximum likelihood fit to the kinematic information of $e^+e^-\rightarrow\tau^+\tau^-\rightarrow (\pi^+\pi^0 \bar{\nu})(l^-\nu\bar{\nu}\gamma)$ $(l=e$ or $\mu)$. [...]
arXiv:1609.08280.- 2017-06-22 - 4 p. - Published in : Nucl. Part. Phys. Proc. 287-288 (2017) 11-14 Fulltext: PDF; External link: Preprint
In : The 14th International Workshop on Tau Lepton Physics (Tau2016), Beijing, China, 18 - 23 Sep 2016, pp.11-14
3.
Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$ / Belle Collaboration
We present a measurement of angular observables, $P_4'$, $P_5'$, $P_6'$, $P_8'$, in the decay $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$, where $\ell^+\ell^-$ is either $e^+e^-$ or $\mu^+\mu^-$. [...]
arXiv:1604.04042 ; BELLE-CONF-1603 ; BELLE-CONF-1603.
- 2016. - 13 p.
Preprint - Full text
4.
Measurement of the branching ratio of $\bar{B}^0 \rightarrow D^{*+} \tau^- \bar{\nu}_{\tau}$ relative to $\bar{B}^0 \rightarrow D^{*+} \ell^- \bar{\nu}_{\ell}$ decays with a semileptonic tagging method / Belle Collaboration
We report a measurement of ratio ${\cal R}(D^*) = {\cal B}(\bar{B}^0 \rightarrow D^{*+} \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B}^0 \rightarrow D^{*+} \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon. The results are based on a data sample containing $772\times10^6$ $B\bar{B}$ pairs recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. [...]
arXiv:1603.06711; BELLE-CONF-1602.- 2019-01 - 12 p. - Published in : Measurement 132 (2019) 369-376 Fulltext: PDF; External link: Preprint
In : 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 12 - 19 Mar 2016, pp.369-376
5.
Energy scan of the $e^+e^- \to h_b(nP)\pi^+\pi^-$ $(n=1,2)$ cross sections and evidence for the $\Upsilon(11020)$ decays into charged bottomonium-like states / Belle Collaboration
Using data collected with the Belle detector in the energy region of the $\Upsilon(10860)$ and $\Upsilon(11020)$ resonances we measure the $e^+e^- \to h_b(nP)\pi^+\pi^-$ $(n=1,2)$ cross sections. Their energy dependences show clear $\Upsilon(10860)$ and $\Upsilon(11020)$ peaks with a small or no non-resonant contribution. [...]
arXiv:1508.06562; BELLE-CONF-1503; BELLE-CONF-1503.- 2016-09-28 - 7 p. - Published in : Phys. Rev. Lett. 117 (2016) 142001 APS Open Access article: PDF; Fulltext: PDF; External link: Rivet analyses reference

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