Publications (44)
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,…
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…
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…
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…
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$^…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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^…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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 …
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 $…
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…
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…
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 $B^+\to Ï^+Ï^0…
Measurement of the branching fraction for decays reconstructed in 2019-2020 Belle II data
Belle II Collaboration, F. Abudinén, I. Adachi +551
We report the first reconstruction of the decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb of integrated lumin…
First search for direct -violating asymmetry in decays at Belle II
Belle II Collaboration, F. Abudinén, I. Adachi +551
We report on the first measurement of the direct -violating asymmetry () in the charmless decay at Belle II and an updated measurement of its bra…
Measurement of the branching fractions of decays using 2019/2020 Belle II data
Belle II Collaboration, F. Abudinén, I. Adachi +545
This note describes the rediscovery of decays in Belle II data, both in the charged and neutral final state: and . The is searc…
lepton mass measurement at Belle II
Belle II Collaboration, F. Abudinén, I. Adachi +539
The reconstruction of tau-pair production, , from the subsequent 3-prong () and 1-prong ($Ï^{-} \to…
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…
Measurements of branching fractions and direct -violating asymmetries in $B^+ \to K^+ Ï^0~\mbox{and}~Ï^+ Ï^0$ 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 Ï^+Ï…
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…
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…
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…
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…
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 ÏK^{*…