L. Santelj

Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment*

I. Adachi, L. Aggarwal, H. Ahmed, J. K. Ahn et autres

Abstract A series of data samples was collected with the Belle II detector at the SuperKEKB collider from March 2019 to June 2022. We determine the integrated luminosities of these data samples using three distinct methodologies involving Bhabha ( ), digamma ( …

The Belle II Detector Upgrades Framework Conceptual Design Report

H. Aihara, A. Aloisio, Didier Auguste, M. Aversano et autres

We describe the planned near-term and potential longer-term upgrades of the Belle II detector at the SuperKEKB electron-positron collider operating at the KEK laboratory in Tsukuba, Japan. These upgrades will allow increasingly sensitive searches for possible new physics beyond the Standard Model …

Determination of the CKM angle $ϕ_{3}$ from a combination of Belle and Belle II results

Belle, Belle Collaborations, H. Aihara, Н. Акопов et autres

We report a determination of the CKM angle $ϕ_{3}$, also known as $γ$, from a combination of measurements using samples of up to 711~fb$^{-1}$ from the Belle experiment and up to 362~fb$^{-1}$ from the Belle II experiment. We combine results from analyses …

First flavor tagging calibration using 2019 Belle II data

F. Abudinén, R. Adak, K. Adamczyk, P. Ahlburg et autres

We report on the first calibration of the standard Belle II $B$-flavor tagger using the full data set collected at the $Υ(4{\rm S})$ resonance in 2019 with the Belle II detector at the SuperKEKB collider, corresponding to 8.7 fb$^{-1}$ of integrated luminosity. …

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Recent developments in data reconstruction for aerogel RICH at Belle II

L. Santelj, Ichiro Adachi, K.Adamczyk, L.Burmistrov et autres