T. Aziz

Measurement of two-particle correlations in hadronic $e^{+} e^{-}$ collisions at Belle

Belle Collaboration, A. Abdesselam, I. Adachi +459

The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon wide…

Search for CP violation in D^0 -> pi^0 pi^0 decays

N. K. Nisar, K. Trabelsi, G. B. Mohanty +161

We search for CP violation in neutral charm meson decays using a data sample with an integrated luminosity of 966 fb^-1 collected with the Belle detector at the KEKB e+e- asymmetri…

Precise measurement of the CP violation parameter sin2phi_1 in B0-->(c\bar c)K0 decays

Belle Collaboration, I. Adachi, H. Aihara +173

We present a precise measurement of the CP violation parameter sin2phi_1 and the direct CP violation parameter A_f using the final data sample of 772x10^6 B\bar B pairs collected a…

hep-ex2011

Measurement of the decay $B^{0} \to I ¨ ^{-} ℓ^{+} I^½$ and determination of $∣ V_{u b} ∣$

H. Ha, E. Won, I. Adachi +140

We present a measurement of the charmless semileptonic decay $B^{0} \to I ¨ ^{-} ℓ^{+} I^½$ using a data sample containing 657 $\times 1 0^{6}$ $B B ˉ$ events collected with the Belle detecto…

hep-ex2024

Silicon Vertex Detector of the Belle II Experiment

S. Mondal, K. Adamczyk, L. Aggarwal +72

The silicon vertex detector (SVD) is installed at the heart of the Belle II experiment, taking data at the high-luminosity $B$ -Factory SuperKEKB since 2019. The detector has shown…

First observation of CP violation and improved measurement of the branching fraction and polarization of B0 -> D+ D- decays

Belle Collaboration, B. Kronenbitter, I. Adachi +160

We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0 -> D*+ D*- decays using a data sample of 772 mill…

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,…

Measurement of the $I ¨ $ lepton polarization and $R (D^{})$ in the decay $B ˉ \to D^{} I ¨ ^{-} I^ˉ ½_{I ¨} $ with one-prong hadronic $I ¨ $ decays at Belle

S. Hirose, T. Iijima, I. Adachi +181

With the full data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay $\bar{B} \rightarrow D^* Ï^- \bar…

First Observation of the Zb0(10610) in a Dalitz Analysis of Y(5S) -> Y(nS) pi0 pi0

P. Krokovny, A. Bondar, I. Adachi +183

We report the first observation of Y(5S) -> Y(nS) pi0 pi0 decays. The neutral partner of the Zb+-(10610), the Zb0(10610) decaying to Y(2,3S) pi0, is observed for the first time wit…

physics.ins-det2010

Belle II Technical Design Report

T. Abe, I. Adachi, K. Adamczyk +407

The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade of KEKB is under constructi…

hep-ex2010

Measurement of CP violating asymmetries in B^0 -> K^+K^- K^0_S decays with a time-dependent Dalitz approach

Belle Collaboration, Y. Nakahama, K. Sumisawa +133

We report a measurement of $C P$ violating asymmetries in $B^{0} (B^{0}) \to K^{+} K^{-} K_{S}^{0}$ decays with a time-dependent Dalitz approach. This analysis is based on a data samp…

Measurement of the decay $B \to D ℓ I^½_{ℓ}$ in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element $∣ V_{c b} ∣$

R. Glattauer, C. Schwanda, A. Abdesselam +178

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $∣ V_{c b} ∣$ using the decay $B \to D ℓ I^½_{ℓ}$ ( $ℓ = e, I^¼$ ) based on 711 fb $^{- 1}$ of $…

hep-ex2017

Measurement of the tau Michel parameters $I^ˉ \cdot$ and $I^¾ I^º$ in the radiative leptonic decay $I ¨ ^{-} \to ℓ^{-} I^½_{I ¨} I^ˉ ½_{ℓ} I^^{3}$

The Belle Collaboration, N. Shimizu, H. Aihara +460

We present a measurement of the Michel parameters of the $I ¨ $ lepton, $I^ˉ \cdot$ and $I^¾ I^º$ , in the radiative leptonic decay $I ¨ ^{-} \to ℓ^{-} I^½_{I ¨} I^ˉ ½_{ℓ} I^^{3}$ using 71…

Study of $B \to D^{(*)} h$ decays using $62.8 fb^{- 1}$ of Belle II data

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

We report measurements related to hadronic $B$ decays to final states that contain charm mesons. The analyses are performed on a $62.8 fb^{- 1}$ data set collected by the B…

Determination of $∣ V_{u b} ∣$ from untagged $B^{0} \to I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ decays using 2019-2021 Belle II data

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

We present an analysis of the charmless semileptonic decay $B^{0} \to I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ , where $ℓ = e, I^¼$ , from 198.0 million pairs of $B B ˉ$ mesons recorded by the Belle…

The Physics of the B Factories

A. J. Bevan, B. Golob, Th. Mannel +2003

This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and da…

Evidence for the decay B0 --> K+K-pi0

The Belle Collaboration, V. Gaur, G. B. Mohanty +168

We report a search for charmless hadronic decays of neutral B mesons to the final state K+K-pi0. The results are based on a 711 fb^-1 data sample that contains 772x10^6 BB-bar pair…

Observation of Excited $I^c ◯_{c}$ Charmed Baryons in $e^{+} e^{-}$ Collisions

Belle Collaboration, J. Yelton, I. Adachi +177

Using the entire Belle data sample of 980 $fb^{- 1}$ of $e^{+} e^{-}$ collisions, we present the results of a study of excited $I^c ◯_{c}$ charmed baryons in the decay mode $I^_{c}^{+} K^{-}$ .…

Measurement of the branching fraction of the $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decay using 190 fb $^{- 1}$ of Belle II data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +590

We report the measurement of the branching fraction of the $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decay in $e^{+} e^{-} \to I^¥ (4 S) \to B B$ data recorded by the Belle II experiment at the…

Study of Two-Body $e^{+} e^{-} \to B_{s}^{()} B ˉ_{s}^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report results on the studies of the $e^{+} e^{-} \to B_{s}^{(*)} B ˉ_{s}^{(*)}$ processes. The results are based on a $121.4$ fb $^{- 1}$ data sample collected with the Belle detector a…

Search for the Decay $B_{s}^{0} \to I^\cdot^{'} I^\cdot$

Belle Collaboration, A. Abdesselam, I. Adachi +459

In the Standard Model (SM) charmless hadronic decays $B_{s}^{0} \to I^\cdot^{'} I^\cdot$ proceed via tree-level $b \to u$ and penguin $b \to s$ transitions. Penguin transitions are sens…

Measurement of the branching fraction of B^+ -> tau^+ nu_tau decays with the semileptonic tagging method

Belle Collaboration, B. Kronenbitter, M. Heck +180

We report a measurement of the branching fraction of B^+ -> tau^+ nu_tau decays using a data sample of 772 x 10^6 BBbar pairs, collected at the Y(4S) resonance with the Belle detec…

A calibration of the Belle II hadronic tag-side reconstruction algorithm with $B \to X ℓ I^½$ decays

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +540

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

Observation of the rare $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ decay from the combined analysis of CMS and LHCb data

The CMS, LHCb Collaborations, : +2807

A joint measurement is presented of the branching fractions $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ and $B^{0} \to I^¼^{+} I^¼^{-}$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data…

hep-ex2010

Observation of Bs->Ds()+Ds()- using e+e- collisions and a determination of the Bs-Bsbar width difference ÎÎ_s

S. Esen, A. J. Schwartz, I. Adachi +125

We have made the first observation of Bs->Ds(*)+Ds(*)- decays using 23.6 fb-1 of data recorded by the Belle experiment running on the Upsilon(5S) resonance. The branching fractions…

Angular analysis of $B^{+} \to I ¨ ^{+} I ¨ ^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. AbudinÃ©n, I. Adachi +549

We report on the first Belle II measurement of the branching fraction ( $B$ ) and longitudinal polarization fraction ( $f_{L}$ ) of $B^{+} \to I ¨ ^{+} I ¨ ^{0}$ decays. We reconstruct $B^…

Measurement of Azimuthal Modulations in the Cross-Section of Di-Pion Pairs in Di-Jet Production from Electron-Positron Annihilation

A. Abdesselam, I. Adachi, K. Adamczyk +418

We present an extraction of azimuthal correlations between two pairs of charged pions detected in opposite jets from electron-positron annihilation. These correlations may arise fr…

physics.ins-det2014

Design, fabrication and characterization of the first AC-coupled silicon microstrip sensors in India

T. Aziz, S. R. Chendvankar, G. B. Mohanty +7

This paper reports the design, fabrication and characterization of single-sided silicon microstrip sensors with integrated biasing resistors and coupling capacitors, produced for t…

hep-ex2023

Measurement of the $B^{0} \to D^{*-} ℓ^{+} I^½_{ℓ}$ branching ratio and $∣ V_{c b} ∣$ with a fully reconstructed accompanying $B$ meson in 2019-2021 Belle II data

F. AbudinÃ©n, I. Adachi, K. Adamczyk +581

We present a measurement of the $B^{0} \to D^{*-} ℓ^{+} I^½_{ℓ}$ ( $ℓ = e, I^¼$ ) branching ratio and of the CKM parameter $∣ V_{c b} ∣$ using signal decays accompanied by a…

Measurements of Branching Fractions and Direct CP Asymmetries for B -> K pi, B->pi pi and B->to KK Decays

Y. -T. Duh, T. -Y. Wu, P. Chang +140

We report measurements of the branching fractions and direct CP asymmetries (A_{CP}) for B->K pi, pi pi and KK decays (but not pi^0 pi^0) based on the final data sample of 772x10^6…

Measurements of branching fraction and $C P$ asymmetry of the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} I ¨ ^{\pm}$ decay at Belle

A. Abdesselam, I. Adachi, K. Adamczyk +446

We report the measurement of the branching fraction and $C P$ asymmetry for the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} I ¨ ^{\pm}$ decay. The analysis is performed on a data sample of…

hep-ph2001

Precision testing the Standard Model

T. Aziz, A. Gurtu

Internal consistency of the most sensitive electroweak measurements within the standard model framework is examined. Confirming an earlier observation on the separation of Z-pole a…

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

Belle II collaboration, F. AbudinÃ©n, I. Adachi +549

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

Evidence for the eta_b(2S) and observation of h_b(1P) -> eta_b(1S) gamma and h_b(2P) -> eta_b(1S) gamma

Belle Collaboration, R. Mizuk, D. M. Asner +171

We report the first evidence for the eta_b(2S) using the h_b(2P)->eta_b(2S)gamma transition and the first observation of the h_b(1P)->eta_b(1S)gamma and h_b(2P)->eta_b(1S)gamma tra…

Evidence for a Zb0(10610) in Dalitz analysis of Y(5S) -> Y(nS) pi0 pi0

I. Adachi, K. Adamczyk, H. Aihara +331

We report the first observation of Y(5S) -> Y(1,2S) pi0 pi0 decays. Evidence for the Zb0(10610) with 4.9sigma significance is found in a Dalitz plot analysis of Y(5S) -> Y(2S) pi0…

Observation of Transverse $I^/ I^ˉ $ Hyperon Polarization in $e^{+} e^{-}$ Annihilation at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +445

We report the first observation of the polarization of $I^/ I^ˉ $ hyperons transverse to its production plane in $e^{+} e^{-}$ annihilation. We observe a significant polarization that…

First decay-time-dependent analysis of $B^{0} \to K_{S}^{0} I ¨ ^{0}$ at Belle II

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +590

We report measurements of the branching fraction ( $B$ ) and direct $C P$ -violating asymmetry ( $A_{C P}$ ) of the charmless decay $B^{0} \to K^{0} I ¨ ^{0}$ at Belle II. A sample of…

Exclusive $B \to X_{u} ℓ I^½_{ℓ}$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb $^{- 1}$ of Belle II Data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +565

We present a reconstruction in early data of the semileptonic decay $B^{+} \to I ¨ ^{0} ℓ^{+} I^½_{ℓ}$ , and first results of a reconstruction of the decays $B^{+} \to I ¨ ^{0} ℓ^{+} I^½_{ℓ}$ …

Measurement of Branching Fraction and Search for $C P$ Violation in $B \to I ¨ I ¨ K$

S. Mohanty, A. B. Kaliyar, V. Gaur +183

We report the measurement of branching fractions and $C P$ -violation asymmetries in $B \to I ¨ I ¨ K$ decays based on a $711 fb^{- 1}$ data sample containing $772 \times 1 0^{6}$ $B\ba…

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

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +420

From April to July 2018, a data sample at the peak energy of the $I^¥ (4 S)$ resonance was collected with the Belle~II detector at the SuperKEKB electron-positron collider. This is th…

Measurement of the branching fraction for $B^{0} \to I ¨ ^{0} I ¨ ^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +551

We report the first reconstruction of the $B^{0} \to I ¨ ^{0} I ¨ ^{0}$ decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb $^{- 1}$ of integrated lumin…

Measurement of the branching ratio of $B ˉ^{0} \to D^{+} I ¨ ^{-} I^ˉ ½_{I ¨} $ relative to $B ˉ^{0} \to D^{+} ℓ^{-} I^ˉ ½_{ℓ}$ decays with a semileptonic tagging method

A. Abdesselam, I. Adachi, K. Adamczyk +441

We report a measurement of ratio $R (D^{*}) = B (B ˉ^{0} \to D^{*+} I ¨ ^{-} I^ˉ ½_{I ¨} ) / B (B ˉ^{0} \to D^{*+} ℓ^{-} I^ˉ ½_{ℓ})$ , where $ℓ$ d…

Measurement of Branching Fractions of Hadronic Decays of the $I^c ◯_{c}^{0}$ Baryon

Belle Collaboration, J. Yelton, I. Adachi +186

Using a data sample of 980 $fb^{- 1}$ of $e^{+} e^{-}$ annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we report the resu…

Observation of a new charged charmoniumlike state in B -> J/psi K pi decays

Belle Collaboration, K. Chilikin, R. Mizuk +162

We present the results of an amplitude analysis of anti-B0 -> J/psi K- pi+ decays. A new charged charmoniumlike state Zc(4200)+ decaying to J/psi pi+ is observed with a significanc…

$I ¨ $ lepton mass measurement at Belle II

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +539

The reconstruction of tau-pair production, $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-}$ , from the subsequent 3-prong ( $I ¨ ^{+} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{+} I^ˉ ½_{I ¨} $ ) and 1-prong ($Ï^{-} \to…

Measurement of the amplitude ratio of $B^{0} \to D^{0} K^{* 0}$ and $B^{0} \to D^{0} ˉ K^{* 0}$ decays with a model-independent Dalitz plot analysis using $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decays

A. Abdesselam, I. Adachi, K. Adamczyk +409

We report a measurement of the amplitude ratio $r_{S}$ of $B^{0} \to D^{0} K^{* 0}$ and $B^{0} \to D^{0} ˉ K^{* 0}$ decays with a model-independent Dalitz plot analysis using $D\to K_S^0Ï^+…

Search for B -> h(*) nu nubar with the full Belle Y(4S) data sample

O. Lutz, S. Neubauer, M. Heck +173

We report a search for the rare decays B -> h(*) nu nubar, where h(*) stands for K+, Ks0, K*+, K*0, pi+, pi0, rho+, rho0 and phi. The results are obtained from a 711 fb-1 data samp…

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} I ¨ ^{+} I^½_{I ¨} $

Belle Collaboration, A. Abdesselam, I. Adachi +457

We report the first measurement of the $D^{*-}$ meson polarization in the decay $B^{0} \to D^{*-} I ¨ ^{+} I^½_{I ¨} $ using the full data sample of 772 $\times 1 0^{6}$ $B B ˉ$ pairs recor…

Study of Three-Body Y(10860) Decays

I. Adachi, K. Adamczyk, H. Aihara +337

We report preliminary results on the analysis of the three-body Y(10860)=> B barB pi, Y(10860) => (B barB* + c.c.) pi and Y(10860)=> B* barB* pi decays including an observation of…

Observation of the decay $B_{s}^{0} \to K^{0} K^{0}$

Belle Collaboration, B. Pal, A. J. Schwartz +181

We measure the decay $B_{s}^{0} \to K^{0} K^{0}$ using data collected at the $I^¥ (5 S)$ resonance with the Belle detector at the KEKB $e^{+} e^{-}$ collider. The data sample used…

Search for $B_{s}^{0} \to I^^{3} I^^{3}$ and a measurement of the branching fraction for $B_{s}^{0} \to I ¨ I^^{3}$

Belle Collaboration, D. Dutta, B. Bhuyan +148

We search for the decay $B_{s}^{0} \to I^^{3} I^^{3}$ and measure the branching fraction for $B_{s}^{0} \to I ¨ I^^{3}$ using 121.4~ $fb^{- 1}$ of data collected at the $Î¥(\ma…

Charmless $B$ decay reconstruction in 2019 Belle II data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +533

We report on the reconstruction of various charmless $B$ decays from electron-positron collisions at the energy corresponding to the $I^¥ (4 S)$ resonance collected with the Belle II…

Measurement of the branching ratio of $B ˉ \to D^{()} I ¨ ^{-} I^ˉ ½_{I ¨} $ relative to $B ˉ \to D^{()} ℓ^{-} I^ˉ ½_{ℓ}$ decays with hadronic tagging at Belle

Belle Collaboration, M. Huschle, T. Kuhr +201

We report a measurement of the branching fraction ratios R(D(*)) of Bbar -> D(*) tau- nubar_tau relative to Bbar -> D()* l- nubar_l (where l = e or mu) using the full Belle data sa…

Search for $C P$ violation in the $D^{+} \to I ¨ ^{+} I ¨ ^{0}$ decay at Belle

Belle Collaboration, V. Babu, K. Trabelsi +196

We search for $C P$ violation in the charged charm meson decay $D^{+} \to I ¨ ^{+} I ¨ ^{0}$ , based on a data sample corresponding to an integrated luminosity of $921 f b^{- 1}$ collecte…

Study of Ï_{bJ}(1P) Properties in the Radiative Î¥(2S) Decays

A. Abdesselam, I. Adachi, K. Adamczyk +444

We report a study of radiative decays of Ï_{bJ}(1P)(J=0,1,2) mesons into 74 hadronic final states comprising charged and neutral pions, kaons, protons; out of these, 41 modes are…

Exclusive $B^{0} \to I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb $^{- 1}$ of Belle II Data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +541

We present the results of the re-discovery of the decay $B^{0} \to I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ in 34.6 fb $^{- 1}$ of Belle II data using hadronic $B$ -tagging via the Full Event Interpretatio…

Rediscovery of $B \to I ¨ K^{()}$ decays and measurement of the longitudinal polarization fraction $f_{L}$ in $B \to I ¨ K^{}$ decays using the Summer 2020 Belle II dataset

F. AbudinÃ©n, I. Adachi, R. Adak +538

We utilize a sample of 34.6 fb $^{- 1}$ , collected by the Belle II experiment at the SuperKEKB asymmetric energy $e^{+} e^{-}$ collider, to search for the $B^{+} \to I ¨ K^{+}$ , $B^+ \to ÏK^{*…

Evidence for the decay $B^{0} \to I^\cdot I^\cdot$

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report a search for $B^{0} \to I^\cdot I^\cdot$ with a data sample corresponding to an integrated luminosity of $698 fb^{- 1}$ containing $753 \times 1 0^{6}$ $B B ˉ$ pairs collect…

Observation of $X (3872)$ in $B \to X (3872) K I ¨ $ decays

A. Bala, V. Bhardwaj, K. Trabelsi +173

We report the first observation of $B^{0} \to X (3872) (K^{+} I ¨ ^{-})$ and evidence for $B^{+} \to X (3872) (K^{0} I ¨ ^{+})$ . We measure the product of branching fractions for the former to…

Study of e+e- => B() B()-bar pi+- at sqrt(s)=10.866 GeV

A. Garmash, A. Abdesselam, I. Adachi +158

We report the analysis of the three-body e+e- => B B-bar pi, B B*-bar pi, and B* B*-bar pi processes, including the first observation of the Zb+-(10610) =>[B B*-bar+c.c.]+- and Zb+…

hep-ex2017

Search for $B \to h I^½ I^ˉ ½$ decays with semileptonic tagging at Belle

The Belle Collaboration, J. Grygier, P. Goldenzweig +203

We present the results of a search for the rare decays $B \to h I^½ I^½$ , where $h$ stands for $K^{+}, K_{S}^{0}, K^{*+}, K^{* 0}, I ¨ ^{+}, I ¨ ^{0}, I ¨ ^{+}$ and $Ï^{…

Measurement of the branching fraction $B (B ˉ^{0} \to D^{*+} ℓ^{-} I^ˉ ½_{ℓ})$ with early Belle II data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +533

We measure the branching fractions for the decays $B ˉ^{0} \to D^{*+} e^{-} I^ˉ ½_{e}$ and $B ˉ^{0} \to D^{*+} I^¼^{-} I^ˉ ½_{I^} ¼$ using $8.70 \pm 0.09 fb^{- 1}$ of data coll…

Evidence for B- -> tau- nu_tau-bar with a Hadronic Tagging Method Using the Full Data Sample of Belle

Belle Collaboration, K. Hara, Y. Horii +179

We measure the branching fraction of B- -> tau- nu_tau-bar using the full Upsilon(4S) data sample containing 772*10^6 BBbar pairs collected with the Belle detector at the KEKB asym…

Measurement of decay-time dependent $C P$ violation in $B^{0} \to K_{S}^{0} K_{S}^{0} K_{S}^{0}$ using 2019--2021 Belle II data

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +590

We report a measurement of decay-time dependent $C P$ -violating parameters in $B^{0} \to K_{S}^{0} K_{S}^{0} K_{S}^{0}$ decays. We use $(198.0 \pm 3.0) \times 1 0^{6} B B$ pairs c…

Measurement of the branching fraction for the decay $B \to K^{*} (892) ℓ^{+} ℓ^{-}$ at Belle II

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +590

We report a measurement of the branching fraction of $B \to K^{*} (892) ℓ^{+} ℓ^{-}$ decays, where $ℓ^{+} ℓ^{-} = I^¼^{+} I^¼^{-}$ or $e^{+} e^{-}$ , using electron-positron collisions recor…

Evidence for CP Violation in the Decay $D^{+} \to K_{S}^{0} I ¨ ^{+}$

B. R. Ko, E. Won, I. Adachi +156

We observe evidence for CP violation in the decay $D^{+} \to K_{S}^{0} I ¨ ^{+}$ using a data sample with an integrated luminosity of 977 fb $^{- 1}$ collected by the Belle detector at t…

astro-ph.HE2018

Was the cosmic ray burst detected by the GRAPES-3 on 22 June 2015 caused by transient weakening of geomagnetic field or by an interplanetary anisotropy?

P. K. Mohanty, K. P. Arunbabu, T. Aziz +19

The GRAPES-3 muon telescope in Ooty, India had claimed detection of a 2 hour (h) high-energy ( $\sim$ 20 GeV) burst of galactic cosmic-rays (GCRs) through a $>$ 50 $I ¨ $ surge in GeV mu…

Measurement of $C P$ asymmetry in the $D^{0} \to K_{S}^{0} K_{S}^{0}$ decay at Belle

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report a measurement of the time-integrated $C P$ asymmetry in the neutral charm meson decay $D^{0} \to K_{S}^{0} K_{S}^{0}$ using 921~fb $^{- 1}$ data collected at the $I^¥ (4 S)$ and $I^¥ (5 S)$ …

Measurement of Branching Fractions and CP Asymmetries in B -> wK Decays and First Evidence of CP Violation in B0 -> wKS0

V. Chobanova, J. Dalseno, C. Kiesling +171

We present a measurement of the branching fractions and charge-parity-(CP-) violating parameters in B -> omega K decays. The results are obtained from the final data sample contain…

Measurement of Branching Fraction and Longitudinal Polarization in $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ Decays at Belle II

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +584

We present a measurement of the branching fraction and longitudinal polarization of $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ decays. SuperKEKB electron-positron collision data corresponding to 189~fb$^…

Measurement of the time-integrated mixing probability $I ¨ _{d}$ with a semileptonic double-tagging strategy and $34.6 fb^{- 1}$ of Belle II collision data

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

Measurement of Hadronic Mass Moments $⟨ M_{X}^{n} ⟩$ in $B \to X_{c} ℓ I^½$ Decays at Belle II

We present measurements of the first six hadronic mass moments in semileptonic $B \to X_{c} ℓ I^½$ decays. The hadronic mass moments, together with other observables of inc…

Measurement of the $B^{0}$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

This document presents the measurement of $B^{0}$ meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of $8.7 \pm 0.2$ fb $^{- 1}$ . Each candid…

Search for an invisibly decaying $Z^{'}$ boson at Belle II in $e^{+} e^{-} \to I^¼^{+} I^¼^{-} (e^{\pm} I^¼^{\mp})$ 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 $Z^{'}$ . 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…

Experimental determination of the isospin of $I^_{c} (2765)^{+} / I^£_{c} (2765)^{+}$

The Belle Collaboration, A. Abdesselam, I. Adachi +454

We report an experimental determination of the isospin of $I^_{c} (2765)^{+} / I^£_{c} (2765)^{+}$ using 980 fb $^{- 1}$ data in the $e^{+} e^{-}$ annihilation around $s = 10.6$ GeV collected b…

Measurements of branching fractions and direct CP asymmetries in $B^{0} \to K^{+} I ¨ ^{-}$ , $B^{+} \to K_{S}^{0} I ¨ ^{+}$ and $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ using 2019 and 2020 data

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

Measurement of the CP-violation Parameter sin2 $I ¨ _{1}$ with a New Tagging Method at the $I^¥ (5 S)$ Resonance

Belle Collaboration, Y. Sato, H. Yamamoto +160

We report a measurement of the CP-violation parameter sin2 $I ¨ _{1}$ at the $I^¥ (5 S)$ resonance using a new tagging method, called " $B$ - $I ¨ $ tagging." In $I^¥ (5 S)$ decays containing a ne…

Measurement of the branching fractions and $C P$ asymmetries of $B^{+} \to I ¨ ^{+} I ¨ ^{0}$ and $B^{+} \to K^{+} I ¨ ^{0}$ decays in 2019-2021 Belle II data

We determine the branching fractions $B$ and $C P$ asymmetries $A_{CP}$ of the decays $B^{+} \to I ¨ ^{+} I ¨ ^{0}$ and $B^{+} \to K^{+} I ¨ ^{0}$ . The res…

First flavor tagging calibration using 2019 Belle II data

We report on the first calibration of the standard Belle II $B$ -flavor tagger using the full data set collected at the $I^¥ (4 S)$ resonance in 2019 with the Belle II detector a…

hep-ex2017

Precise determination of the CKM matrix element $∣ V_{c b} ∣$ with $B ˉ^{0} \to D^{* +} ℓ^{-} I^ˉ ½_{ℓ}$ decays with hadronic tagging at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +459

The precise determination of the CKM matrix element $∣ V_{c b} ∣$ is important for carrying out tests of the flavour sector of the Standard Model. In this article we prese…

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, A. Abdesselam, I. Adachi +461

We report a measurement of the ratios of branching fractions $R (D) = B (B ˉ \to D I ¨ ^{-} I^ˉ ½_{I ¨} ) / B (B ˉ \to D ℓ^{-} I^ˉ ½_{ℓ})$ and $\mathcal{R}…

Search for the rare decay $D^{0} \to I^^{3} I^^{3}$ at Belle

Belle Collaboration, N. K. Nisar, G. B. Mohanty +180

We search for the rare radiative decay $D^{0} \to I^^{3} I^^{3}$ using a data sample with an integrated luminosity of $832 f b^{- 1}$ recorded by the Belle detector at the KEKB $e^{+} e^{-}$ asym…

Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in $B \to J / I ¨ K$ decays at Belle II

We report a study of $B \to J / I ¨ (ℓ^{+} ℓ^{-}) K$ decays, where $ℓ$ represents an electron or a muon, using $e^{+} e^{-}$ collisions at the $I^¥ (4 S)$ resonance. The data were c…

Measurement of Michel Parameters ( $I^ˉ \cdot$ , $I^¾ I^º$ ) in the radiative leptonic decay of tau at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +445

We present the first measurement of the Michel parameters $I^ˉ \cdot$ and $I^¾ I^º$ in the radiative leptonic decay of the $I ¨ $ lepton using 703 f $b^{- 1}$ of data collected with…

Study of $I ¨ _{b J} (n P) \to I ¨ I^¥ (1 S)$ at Belle

Belle Collaboration, A. Abdesselam, I. Adachi +470

We report results from a study of hadronic transitions of the $I ¨ _{b J} (n P)$ states of bottomonium at Belle. The $P$ -wave states are reconstructed in transitions to the $I^¥ (1 S)$ wit…

Study of charmless decays $B^{\pm} \to K_{S}^{0} K_{S}^{0} h^{\pm}$ ( $h = K, I ¨ $ ) at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +449

We report a search for charmless hadronic decays of charged $B$ mesons to the final states $K_{S}^{0} K_{S}^{0} K^{\pm}$ and $K_{S}^{0} K_{S}^{0} I ¨ ^{\pm}$ . The results are based…

Experimental constraints on the spin and parity of the Z(4430)+

Belle Collaboration, K. Chilikin, R. Mizuk +188

We perform a full amplitude analysis of B0 -> psi' K+ pi- decays, with psi' -> mu+ mu- or e+ e-, to constrain the spin and parity of the Z(4430)-. The J^P=1+ hypothesis is favored…

Angular analysis of $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$

Belle Collaboration, A. Abdesselam, I. Adachi +442

We present a measurement of angular observables, $P_{4}^{'}$ , $P_{5}^{'}$ , $P_{6}^{'}$ , $P_{8}^{'}$ , in the decay $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$ , where $ℓ^{+} ℓ^{-}$ is either $e^{+} e^{-}$ or $Î¼^…

Determination of $∣ V_{c b} ∣$ from $B \to D ℓ I^½$ decays using 2019-2021 Belle II data

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $V_{c b}$ using $B \to D ℓ I^½$ decays. The result is based on $e^{+} e^{-} \to I^¥ (4 S)$ dat…

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 $e^{+} e^{-}$ collider. Belle II collected its first collisions in 2018, and is ex…

Measurement of the $I ¨ $ lepton polarization in the decay $B ˉ \to D^{*} I ¨ ^{-} I^ˉ ½_{I ¨} $

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report the first measurement of the $I ¨ $ lepton polarization in the decay $B ˉ \to D^{*} I ¨ ^{-} I^ˉ ½_{I ¨} $ as well as a new measurement of the ratio of the branching…

Evidence of a new narrow resonance decaying to $I ¨ _{c 1} I^^{3}$ in $B \to I ¨ _{c 1} I^^{3} K$

Belle Collaboration, V. Bhardwaj, K. Miyabayashi +188

We report measurements of $B \to I ¨ _{c 1} I^^{3} K$ and $I ¨ _{c 2} I^^{3} K$ decays using $772 \times 1 0^{6}$ $B B ˉ$ events collected at the $I^¥ (4 S)$ resonance with the Belle detector at th…

Study of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} J / I ¨ $ and Observation of a Charged Charmonium-like State at Belle

Belle Collaboration, Z. Q. Liu, C. P. Shen +185

The cross section for $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} J / I ¨ $ between 3.8 GeV and 5.5 GeV is measured with a 967 fb $^{- 1}$ data sample collected by the Belle detector at or near the $I^¥ (n S)$ …

Measurement of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} I^½_{ℓ}$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb $^{- 1}$ of Belle II data

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

We present a first measurement of the $B^{0} ˉ \to D^{*+} ℓ^{-} I^½_{ℓ}$ branching fraction using fully reconstructed $B$ meson decays employing the Full Event Int…

Measurement of the photon-energy spectrum in inclusive $B \to X_{s} I^^{3}$ decays identified using hadronic decays of the recoil $B$ meson in 2019-2021 Belle II data

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

Measurements of the branching fractions for $B \to K^{*} I^^{3}$ decays at Belle II

This paper reports a study of $B \to K^{*} I^^{3}$ decays using $62.8 \pm 0.6$ fb $^{- 1}$ of data collected during 2019--2020 by the Belle II experiment at the SuperKEKB $e^{+} e^{-}$ asym…

Lepton-Flavor-Dependent Angular Analysis of $B \to K^{*} ℓ^{+} ℓ^{-}$

Belle Collaboration, S. Wehle, C. Niebuhr +200

We present a measurement of angular observables and a test of lepton flavor universality in the $B \to K^{*} ℓ^{+} ℓ^{-}$ decay, where $ℓ$ is either $e$ or $I^¼$ . The analysis i…

Rediscovery of $B^{0} \to J / I ¨ K_{L}^{0}$ at Belle II

We present preliminary results on the reconstruction of the $B^{0} \to J / I ¨ K_{L}^{0}$ decay, where $J / I ¨ \to I^¼^{+} I^¼^{-}$ or $…