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The Belle detektor with open muon system
Candidates vs. M_bc for old and new full reconstruction
Comparison of the previous and improved full reconstruction of B mesons


The Belle detector analyzes reactions at the e+e--collider KEKB at the KEK laboratory in Tsukuba, Japan. Because the center of mass energy is equal to the mass of the Y(4S) resonance and the Y(4S) meson decays into a pair of B mesons, it is called a B factory. By using different energies for the electron and positron beams it is possible to measure the difference in the decay times of the two B mesons. With this setup, the Belle experiment could confirm CP violation in the B0 meson system which was predicted by the theory of Kobayashi and Maskawa who were awarded the Nobel prize for their theory. Furthermore, the large data sample of the Belle experiment allows to perform several high precision measurements on a broad fieled of flavor physics research. The aim of these measurements is to observe deviations from the predictions of the standard model of particle physics to obtain evidence for new particles or interactions.




Contribution of the ETP

The ETP is a member of the Belle collaboration since 2008 and performs analyses of CP violation, rare decays and charm physics. Furthermore, we develop high performance analysis algorithms. We could, for example, more than double the number of fully reconstructed B mesons in the Belle dataset.




Belle Experiment

Recent publications concerning BELLE:

Autor bzw. Beitrag des EKP Typ Titel Nummer und Download
Gelb, MoritzDoktorarbeitSearch for the Rare Decay $\mathrm{B}^+ \to \ell^+ \nu_{\ell} \gamma$ with the Full Event Interpretation at the Belle ExperimentETP-KA/2018-14
Fichter, FabianMasterarbeitSearch for $B_{S} \rightarrow \phi \pi^{0}$ Decays at the Belle ExperimentIEKP-KA/2016-28
Kohl, SimonMasterarbeitDalitz analysis of $B^- \rightarrow D^+ \pi^- \pi^-$IEKP-KA/2016-09
Heider, ManuelDoktorarbeitDalitz analysis of $B^- \rightarrow D^0 \pi^- \pi^0$ and $B^0 \rightarrow D^- \pi^+ \pi^0$ at the Belle experimentIEKP-KA/2015-17
Heller, AndreasDoktorarbeitSearch for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sampleIEKP-KA/2015-27
Huschle, MatthiasDoktorarbeitMeasurement of the branching ratio of $B\rightarrow D^{(\ast)}\tau\nu_\tau$ relative to $B\rightarrow D^{(\ast)}\ell\nu_\ell$ decays with hadronic tagging at BelleIEKP-KA/2015-3
Büchner, MatthiasBachelorarbeitA Study of Multivariate Techniques for Continuum SuppressionIEKP-BACHELOR-KA/2014-13
Heller, Andreas; Feindt, Michael; Heck, Martin; Zupanc, Anze; Kuhr, Thomas; Goldenzweig, PabloKonferenzbeitragMessung des semileptonischen Zerfalls $B^+\rightarrow \ell^+\nu\gamma$ mit $\ell^+ = e^+, \mu^+$Download
Huschle, MatthiasInterne NoteSearch for Charged Higgs Contribution in $B\rightarrow D^\ast\tau\nu_\tau$Download
Kronenbitter, BastianDoktorarbeitMeasurement of the branching fraction of $B^+ \to \tau^+ \nu_\tau$ decays at the Belle experimentIEKP-KA/2014-21