papers

Publications (44)

physics.ins-det2022

Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector

R. Leboucher, K. Adamczyk, L. Aggarwal +78

The Silicon Vertex Detector (SVD), with its four double-sided silicon strip sensor layers, is one of the two vertex sub-detectors of Belle II operating at SuperKEKB collider (KEK,…

hep-ex2020

Measurement of the branching fraction with early Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +533

We measure the branching fractions for the decays and using of data coll…

hep-ex2022

Measurement of decay-time dependent violation in using 2019--2021 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report a measurement of decay-time dependent -violating parameters in decays. We use pairs c…

hep-ex2022

Measurement of the branching fraction for the decay at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report a measurement of the branching fraction of decays, where or , using electron-positron collisions recor…

hep-ex2022

Measurement of Branching Fraction and Longitudinal Polarization in Decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +584

We present a measurement of the branching fraction and longitudinal polarization of decays. SuperKEKB electron-positron collision data corresponding to 189~fb$^…

hep-ex2021

Measurement of the time-integrated mixing probability with a semileptonic double-tagging strategy and of Belle II collision data

Belle II Collaboration, F. Abudinén, I. Adachi +550

We present the first measurement of the time-integrated mixing probability using Belle II data collected at a center-of-mass (CM) energy of 10.58 GeV, corresponding to the m…

hep-ex2021

Study of decays using of Belle II data

Belle II Collaboration, F. Abudinen, I. Adachi +549

We report measurements related to hadronic decays to final states that contain charm mesons. The analyses are performed on a data set collected by the B…

hep-ex2020

Measurement of Hadronic Mass Moments in Decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +540

We present measurements of the first six hadronic mass moments in semileptonic decays. The hadronic mass moments, together with other observables of inc…

hep-ex2022

Determination of from untagged decays using 2019-2021 Belle II data

Belle II Collaboration, K. Adamczyk, L. Aggarwal +588

We present an analysis of the charmless semileptonic decay , where , from 198.0 million pairs of mesons recorded by the Belle…

hep-ex2020

Measurement of the lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Belle II Collaboration, F. Abudinén, I. Adachi +534

This document presents the measurement of meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of fb. Each candid…

hep-ex2020

Search for an invisibly decaying boson at Belle II in plus missing energy final states

Belle II Collaboration, I. Adachi, P. Ahlburg +358

Theories beyond the standard model often predict the existence of an additional neutral boson, the . Using data collected by the Belle II experiment during 2018 at the…

physics.ins-det2022

The Silicon Vertex Detector of the Belle II Experiment

G. Dujany, K. Adamczyk, L. Aggarwal +78

In 2019 the Belle II experiment started data taking at the asymmetric SuperKEKB collider (KEK, Japan) operating at the Y(4S) resonance. Belle II will search for new physics beyond…

hep-ex2021

Measurements of branching fractions and direct CP asymmetries in , and using 2019 and 2020 data

Belle II Collaboration, F. Abudinén, I. Adachi +549

We report updated measurements of branching fractions () and CP-violating charge asymmetries () for charmless decays at Belle II, which opera…

hep-ex2022

Measurement of the branching fractions and asymmetries of and decays in 2019-2021 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +582

We determine the branching fractions and asymmetries of the decays and . The res…

hep-ex2022

Measurement of the branching fraction of the decay using 190 fb of Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report the measurement of the branching fraction of the decay in data recorded by the Belle II experiment at the…

hep-ex2020

First flavor tagging calibration using 2019 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +540

We report on the first calibration of the standard Belle II -flavor tagger using the full data set collected at the resonance in 2019 with the Belle II detector a…

hep-ex2020

A calibration of the Belle II hadronic tag-side reconstruction algorithm with decays

Belle II Collaboration, F. Abudinén, I. Adachi +540

Tag-side reconstruction is an important method for reconstructing meson decays with missing energy. The Belle II tag-side reconstruction algorithm, Full Event Interpretation, r…

hep-ex2021

Angular analysis of decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on the first Belle II measurement of the branching fraction () and longitudinal polarization fraction () of decays. We reconstruct $B^…

hep-ex2023

Measurement of the branching ratio and with a fully reconstructed accompanying meson in 2019-2021 Belle II data

F. Abudinén, I. Adachi, K. Adamczyk +581

We present a measurement of the () branching ratio and of the CKM parameter using signal decays accompanied by a…

hep-ex2022

Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +591

We report a study of decays, where represents an electron or a muon, using collisions at the resonance. The data were c…

hep-ex2022

Determination of from decays using 2019-2021 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +590

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element using decays. The result is based on dat…

hep-ex2021

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on measurements of branching fractions () and CP-violating charge asymmetries () of multibody charmless decays reconstructed by the…

hep-ex2019

The Belle II Physics Book

E. Kou, P. Urquijo, W. Altmannshofer +524

We present the physics program of the Belle II experiment, located on the intensity frontier SuperKEKB collider. Belle II collected its first collisions in 2018, and is ex…

hep-ex2022

First decay-time-dependent analysis of at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report measurements of the branching fraction () and direct -violating asymmetry () of the charmless decay at Belle II. A sample of…

hep-ex2020

Measurement of the semileptonic branching fraction with fully reconstructed meson decays and 34.6 fbof Belle II data

Belle II Collaboration, F. Abudinen, I. Adachi +540

We present a first measurement of the branching fraction using fully reconstructed meson decays employing the Full Event Int…

hep-ex2021

Search for decays using an inclusive tagging method at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +377

A search for the flavor-changing neutral-current decay is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collide…

hep-ex2022

Measurement of the photon-energy spectrum in inclusive decays identified using hadronic decays of the recoil meson in 2019-2021 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +593

We measure the photon-energy spectrum in radiative bottom-meson () decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron…

hep-ex2021

Measurements of the branching fractions for decays at Belle II

F. Abudinén, I. Adachi, R. Adak +565

This paper reports a study of decays using fb of data collected during 2019--2020 by the Belle II experiment at the SuperKEKB asym…

hep-ex2021

Exclusive Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +565

We present a reconstruction in early data of the semileptonic decay , and first results of a reconstruction of the decays

hep-ex2021

Rediscovery of at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +545

We present preliminary results on the reconstruction of the decay, where or $…

hep-ex2020

Search for Axion-Like Particles produced in collisions at Belle II

Belle II collaboration, F. Abudinen, I. Adachi +334

We present a search for the direct production of a light pseudoscalar decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process…

hep-ex2019

Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

Belle II Collaboration, F. Abudinén, I. Adachi +420

From April to July 2018, a data sample at the peak energy of the resonance was collected with the Belle~II detector at the SuperKEKB electron-positron collider. This is th…

hep-ex2022

Angular analysis of decays reconstructed in 2019, 2020, and 2021 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report on a Belle II measurement of the branching fraction (), longitudinal polarization fraction (), and CP asymmetry () of $B^+\to ρ^+ρ^0…

hep-ex2021

Measurement of the branching fraction for decays reconstructed in 2019-2020 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +551

We report the first reconstruction of the decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb of integrated lumin…

hep-ex2021

First search for direct -violating asymmetry in decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +551

We report on the first measurement of the direct -violating asymmetry () in the charmless decay at Belle II and an updated measurement of its bra…

hep-ex2021

Measurement of the branching fractions of decays using 2019/2020 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +545

This note describes the rediscovery of decays in Belle II data, both in the charged and neutral final state: and . The is searc…

hep-ex2021

lepton mass measurement at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +539

The reconstruction of tau-pair production, , from the subsequent 3-prong () and 1-prong ($τ^{-} \to…

hep-ex2020

Studies of the semileptonic and decay processes with 34.6 fb of Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +542

We report measurements of the and processes using 34.6 fb of collision events recorded by the Bell…

hep-ex2021

Measurements of branching fractions and direct -violating asymmetries in $B^+ \to K^+ π^0~\mbox{and}~π^+ π^0$ decays using 2019 and 2020 Belle II data

F. Abudinén, I. Adachi, R. Adak +549

We report measurements of branching fractions () and direct -violating asymmetries () for the decays and $B^+ \to π^+π…

hep-ex2022

Study of Exclusive Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +590

We present a reconstruction of the semileptonic decays and in a sample corresponding to 189.3 fb of Belle II data, using even…

hep-ex2020

Measurements of branching fractions and CP-violating charge asymmetries in charmless decays reconstructed in 2019--2020 Belle~II data

Belle II Collaboration, F. Abudinén, I. Adachi +544

We report on first measurements of branching fractions~() and CP-violating charge asymmetries~() in charmless decays at Belle~II. We use a sample of e…

hep-ex2020

Charmless decay reconstruction in 2019 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +533

We report on the reconstruction of various charmless decays from electron-positron collisions at the energy corresponding to the resonance collected with the Belle II…

hep-ex2020

Exclusive Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +541

We present the results of the re-discovery of the decay in 34.6 fb of Belle II data using hadronic -tagging via the Full Event Interpretatio…

hep-ex2020

Rediscovery of decays and measurement of the longitudinal polarization fraction in decays using the Summer 2020 Belle II dataset

F. Abudinén, I. Adachi, R. Adak +538

We utilize a sample of 34.6 fb, collected by the Belle II experiment at the SuperKEKB asymmetric energy collider, to search for the , $B^+ \to ϕK^{*…