2,094 research outputs found
Measurements of partial branching fractions of inclusive B → X u ℓ + ν ℓ decays with hadronic tagging
No full text
Simulation of an all-layer monolithic pixel vertex detector for the Belle II upgrade
No full textThe Belle II experiment is evaluating an upgrade program aiming at the time frame 2026–2027 for the installation of the upgraded detectors, to improve the detector performance and robustness against beam-induced backgrounds. The VTX concept, a fully-pixelated system based on depleted monolithic active pixel sensors, has been developed as a replacement of the current pixel-and-strip vertex detector. A simulation framework for the VTX has been developed and integrated with the standard Belle II simulation, facilitating the comparison among different layouts. Simulation results (such as tracking efficiency and vertex resolution) on benchmark physics channels are presented, showing a significant improvement with respect to the current detector
Combined measurements of the Mass and Couplings Properties of the Higgs boson using the ATLAS Detector
No full textCombined measurements of the Mass and Couplings Properties of the Higgs boson using the ATLAS Detector -- Talk for PASCOS 2013 focussing only on the ATLAS Higgs combinatio
Role of interference in semileptonic decays
No full textIt is long known that interference effects play an important role in
understanding the shape of the spectrum of resonances near the
threshold. In this manuscript we investigate the role of the
interference in the study of semileptonic decays. We determine for the first time the strong phase between and from a
recent Belle measurement of the spectrum of . We find \phi_{\rho-\omega} = \left( -46_{-67}^{+155}
\right)\unicode{xb0} and extract the branching fraction of . In addition, we set a limit on the -wave component within a mass window
ranging from to of . We also determine the absolute value
of the Cabibbo-Kobayashi-Maskawa matrix element of , which takes into account
the interference.Comment: 13 pages, 16 figure
The Full Event Interpretation - An exclusive tagging algorithm for the Belle II experiment
No full textThe full event interpretation is presented: a new exclusive tagging algorithm used by the high-energy physics experiment Belle II. The experimental setup of Belle II allows the precise measurement of otherwise inaccessible B meson decay modes. The Full Event Interpretation algorithm enables many of these measurements. The algorithm relies on machine learning to automatically identify plausible B meson decay chains based on the data recorded by the detector. Compared to similar algorithms employed by previous experiments, the Full Event Interpretation provides a greater efficiency, yielding a larger effective sample size usable in the measurement
Dalitz plot analyses of B-0 -> (D-DK+)-K-0 and B+-> (D)over-bar(-)D(0)K(+) decays
No full text© 2015, APS Journal
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