papers

Publications (50)

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-th2006

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.

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…

astro-ph.EP2023

Scaling slowly rotating asteroids by stellar occultations

A. Marciniak, J. Ďurech, 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…

hep-ex2016

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…

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…

hep-ph2012

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…

hep-th2004

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…

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-th2003

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…

hep-th2013

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…

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-ex2016

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}^{+} ΅

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-ex2020

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…

hep-th1999

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…

physics.ins-det2019

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…

physics.ins-det2016

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…

physics.ins-det2023

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…

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…

physics.ins-det2018

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…

hep-th2013

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…

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-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-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-th1999

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…

physics.ins-det2014

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…

physics.ins-det2020

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…

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-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…

physics.ins-det2018

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…

physics.ins-det2019

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…

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^{*…

physics.ins-det2020

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…

physics.ins-det2013

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…

physics.ins-det2014

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…

hep-th1998

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…