The Full Event Interpretation

Keck, Thomas M.; Abudinén, F.; Bernlochner, F. U.; Cheaib, R.; Cunliffe, S.; Feindt, M.; Ferber, T.; Gelb, M.; Gemmler, J.; Goldenzweig, P.; Heck, M.; Hollitt, S. E.; Kahn, J.; Krohn, J. F.; Kuhr, T.; Komarov, I.; Li-Gioi, L.; Lubej, M.; Metzner, F.; Prim, M. T.; Pulvermacher, C.; Ritter, M.; Schwab, Judith; Sutcliffe, W.; Tamponi, U.; Tenchini, F.; Toutounji, N.; Urquijo, P.; Weyland, Denis; Zupanc, A.

doi:10.1007/s41781-019-0021-8

Cited by 72 publications

(45 citation statements)

References 15 publications

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“…The discovery prospects for this decay at Belle II are excellent: the improved tracking capabilities, better calorimeter electronics, and the continuous development of modern tagging algorithms such as Ref. [235] will help improving the sensitivity. Extrapolating from the central value and uncertainty of the currently most precise limit of Eq.…”

Section: Experimental Status and Prospects Of B → ν γmentioning

confidence: 99%

Challenges in semileptonic $${\varvec{B}}$$ decays

et al. 2020

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Two of the elements of the Cabibbo–Kobayashi–Maskawa quark mixing matrix, $$|V_{ub}|$$ | V ub | and $$|V_{cb}|$$ | V cb | , are extracted from semileptonic B decays. The results of the B factories, analysed in the light of the most recent theoretical calculations, remain puzzling, because for both $$|V_{ub}|$$ | V ub | and $$|V_{cb}|$$ | V cb | the exclusive and inclusive determinations are in clear tension. Further, measurements in the $$\tau $$ τ channels at Belle, Babar, and LHCb show discrepancies with the Standard Model predictions, pointing to a possible violation of lepton flavor universality. LHCb and Belle II have the potential to resolve these issues in the next few years. This article summarizes the discussions and results obtained at the MITP workshop held on April 9–13, 2018, in Mainz, Germany, with the goal to develop a medium-term strategy of analyses and calculations aimed at solving the puzzles. Lattice and continuum theorists working together with experimentalists have discussed how to reshape the semileptonic analyses in view of the much higher luminosity expected at Belle II, searching for ways to systematically validate the theoretical predictions in both exclusive and inclusive B decays, and to exploit the rich possibilities at LHCb.

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Section: Experimental Status and Prospects Of B → ν γmentioning

confidence: 99%

Challenges in semileptonic $${\varvec{B}}$$ decays

et al. 2020

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“…In the future, improvements of these limits by 1 to 2 orders of magnitudes are foreseen by Belle II and LHCb. Tauonic modes will particularly benefit from an improved tagging method at Belle II [62], and improved trigger and tracking efficiency from the LHCb upgrade.…”

Section: Search For Lepton Flavour/number Violating Decaysmentioning

confidence: 99%

Rare b-hadron decays

Egede¹,

Serrano²

2020

Comptes Rendus. Physique

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“…This feature is exploited by using a boosted decision tree (BDT) to classify each input hit in a signal or background category and not process hits in the background category further. This procedure is very fast as the runtime scales almost linearly with the amount of input hits, contrary to the downstream pattern recognition steps, and the performance-optimized FastBDT [4] library is used. The benefits include a greatly reduced combinatorial complexity for later track finding stages, which results in a faster runtime and lower fake rate.…”

Section: Cdc Track Findingmentioning

confidence: 99%

Belle II Track Reconstruction and Results from first Collisions

Hauth

2019

EPJ Web Conf.

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In April 2018, e + e − collisions of the SuperKEKB B-Factory have been recorded by the Belle II detector in Tsukuba (Japan) for the first time. The new accelerator and detector represent a major upgrade from the previous Belle experiment and will achieve a 40 times higher instantaneous luminosity. Special considerations and challenges arise for track reconstruction at Belle II due to multiple factors. This high luminosity configuration of the collider increases the beam-induced background by many factors compared to Belle and a new track reconstruction software has been developed from scratch to achieve an excellent physics performance in this busy environment. Even though on average only eleven signal tracks are present in one event, all of them need to be reconstructed down to a transverse momentum of 50 MeV and no fake tracks should be present in the event. Many analyses at Belle II rely on the advantage that the initial state in B-factories is well known and a clean event reconstruction is possible if no tracks are left after assigning all tracks to particle hypotheses. This contribution will introduce the concepts and algorithms of the Belle II tracking software. Special emphasis will be put on the mitigation techniques developed to perform track reconstruction in high-occupancy events. First results from the data-taking with the Belle II detector will be presented.

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The Full Event Interpretation

Cited by 72 publications

References 15 publications

Challenges in semileptonic $${\varvec{B}}$$ decays

Challenges in semileptonic $${\varvec{B}}$$ decays

Rare b-hadron decays

Belle II Track Reconstruction and Results from first Collisions

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