Publications (50)
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…
PSU(2,2|4) transformations of IIB superstring in AdS_5 x S^5
M. Nishimura, Y. Tanii
The PSU(2,2|4) transformation laws of the IIB superstring theory in the AdS_5 x S^5 background are explicitly obtained for the light-cone gauge in the Green-Schwarz formalism.
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…
Scaling slowly rotating asteroids by stellar occultations
A. Marciniak, J. Äurech, A. Choukroun +176
As evidenced by recent survey results, majority of asteroids are slow rotators (P>12 h), but lack spin and shape models due to selection bias. This bias is skewing our overall unde…
Measurement of the radiative decay of polarized muons in the MEG experiment
MEG Collaboration, A. M. Baldini, Y. Bao +68
We studied the radiative muon decay by using for the first time an almost fully polarized muon source. We identified a large sample (~13000) of these decay…
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…
IBP methods at finite temperature
M. Nishimura, Y. Schroder
We demonstrate the applicability of integration-by-parts (IBP) identities in finite-temperature field theory. As a concrete example, we perform 3-loop computations for the thermody…
Perturbations and Supersymmetries in AdS_3/CFT_2
M. Nishimura, Y. Tanii
Symmetry breaking by perturbations in the AdS/CFT correspondence is discussed. Perturbations of vector fields to the AdS_3 x S^3 solution of the six-dimensional N=(4,4) supergravit…
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…
Three-Form Flux with N=2 Supersymmetry on AdS_5 x S^5
M. Nishimura, Y. Tanii
In the context of the AdS/CFT correspondence the general form of a three-form flux perturbation to the AdS_5 x S^5 solution in the type IIB supergravity which preserves N=2 supersy…
Coupling of the BLG theory to a conformal supergravity background
M. Nishimura, Y. Tanii
The Bagger-Lambert-Gustavsson theory is coupled to an off-shell D=3, N=8 conformal supergravity background. Local transformation laws of the conformal supergravity multiplet are ob…
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^…
Muon polarization in the MEG experiment: predictions and measurements
A. M. Baldini, Y. Bao, E. Baracchini +67
The MEG experiment makes use of one of the world's most intense low energy muon beams, in order to search for the lepton flavour violating process $μ^{+} \rightarrow {\rm e}^{+} ΅
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…
Search for lepton flavour violating muon decay mediated by a new light particle in the MEG experiment
A. M. Baldini, F. Berg, M. Biasotti +68
We present the first direct search for lepton flavour violating muon decay mediated by a new light particle X, . This search u…
Super Weyl Anomalies in the AdS/CFT Correspondence
M. Nishimura, Y. Tanii
Anomalies of N = (4,4) superconformal field theories coupled to a conformal supergravity background in two dimensions are computed by using the AdS/CFT correspondence. We find that…
A Laser-based Time Calibration System for the MEG II Timing Counter
M. Nakao, G. Boca, P. W. Cattaneo +8
We have developed a new laser-based time calibration system for the MEG II timing counter dedicated to timing measurement of positrons. The detector requires precise timing alignme…
Time resolution of time-of-flight detector based on multiple scintillation counters readout by SiPMs
P. W. Cattaneo, M. De Gerone, F. Gatti +5
A new timing detector measuring ~50 MeV/c positrons is under development for the MEG II experiment, aiming at a time resolution . The resolution is expect…
Silicon tracker array for RIB experiments at SAMURAI
A. I. Stefanescu, V. Panin, L. Trache +49
This work describes a silicon tracker system developed for experiments with proton-rich radioactive ion beams at the SAMURAI superconducting spectrometer of RIBF at RIKEN. The syst…
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…
Results from Pilot Run for MEG II Positron Timing Counter
M. Nakao, A. De Bari, M. Biasotti +15
The MEG II experiment at Paul Scherrer Institut in Switzerland will search for the lepton flavour violating muon decay, , with a sensitivity of imp…
N=6 conformal supergravity in three dimensions
M. Nishimura, Y. Tanii
N=6 conformal supergravity in three dimensions is studied in an off-shell component field formulation. We obtain local symmetry transformation laws and a Lagrangian of the conforma…
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 $…
Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment
Belle II Collaboration, F. Abudinén, I. Adachi +420
From April to July 2018, a data sample at the peak energy of the resonance was collected with the Belle~II detector at the SuperKEKB electron-positron collider. This is th…
Measurement of the branching fraction for decays reconstructed in 2019-2020 Belle II data
Belle II Collaboration, F. Abudinén, I. Adachi +551
We report the first reconstruction of the decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb of integrated lumin…
First search for direct -violating asymmetry in decays at Belle II
Belle II Collaboration, F. Abudinén, I. Adachi +551
We report on the first measurement of the direct -violating asymmetry () in the charmless decay at Belle II and an updated measurement of its bra…
Measurement of the branching fractions of decays using 2019/2020 Belle II data
Belle II Collaboration, F. Abudinén, I. Adachi +545
This note describes the rediscovery of decays in Belle II data, both in the charged and neutral final state: and . The is searc…
lepton mass measurement at Belle II
Belle II Collaboration, F. Abudinén, I. Adachi +539
The reconstruction of tau-pair production, , from the subsequent 3-prong () and 1-prong ($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…
Local Symmetries in the AdS_7/CFT_6 Correspondence
M. Nishimura, Y. Tanii
It is shown that local symmetry transformations of the maximal AdS supergravity in seven-dimensional anti de Sitter space induce those of the N=(2,0) conformal supergravity on the…
Design and test of an extremely high resolution Timing Counter for the MEG II experiment: preliminary results
M. De Gerone, F. Gatti, W. Ootani +5
The design and tests of Timing Counter elements for the upgrade of the MEG experiment, MEG II,is presented. The detector is based on several small plates of scintillator with a Sil…
Performance evaluation of the aerogel RICH counter for the Belle II spectrometer using early beam collision data
M. Yonenaga, I. Adachi, L. Burmistrov +32
The Aerogel Ring Imaging Cherenkov (ARICH) counter serves as a particle identification device in the forward end-cap region of the Belle II spectrometer. It is capable of identifyi…
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…
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…
The design of the MEG II experiment
A. M. Baldini, E. Baracchini, C. Bemporad +72
The MEG experiment, designed to search for the mu+->e+ gamma decay at a 10^-13 sensitivity level, completed data taking in 2013. In order to increase the sensitivity reach of the e…
The laser-based time calibration system for the MEG II pixelated Timing Counter
G. Boca, P. W. Cattaneo, M. De Gerone +12
We have developed a new laser-based time calibration system for highly segmented scintillator counters like the MEG II pixelated Timing Counter (pTC), consisting of 512-centimeter…
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^{*…
Timing resolution of a plastic scintillator counter read out by radiation damaged SiPMs connected in series
G. Boca, P. W. Cattaneo, M. De Gerone +8
This paper discusses the effects of radiation damage to SiPMs on the performances of plastic scintillator counters with series-connected SiPM readout, focusing on timing measuremen…
MEG Upgrade Proposal
A. M. Baldini, F. Cei, C. Cerri +65
We propose the continuation of the MEG experiment to search for the charged lepton flavour violating decay (cLFV) μ\to e γ, based on an upgrade of the experiment, which aims for…
SRIT: A time-projection chamber for symmetry-energy studies
R. Shane, A. McIntosh, T. Isobe +25
A Time-Projection Chamber (TPC) called the SAMURAI Pion-Reconstruction and Ion-Tracker (SRIT) has recently been constructed at Michigan State University as part of an internati…
Supersymmetry in the AdS/CFT Correspondence
M. Nishimura, Y. Tanii
We study how local symmetry transformations of (p, q) anti de Sitter supergravities in three dimensions act on fields on the two-dimensional boundary. The boundary transformation l…