T. Sumiyoshi

Search for the decay $B_{s}^{0} \to I ¨ ^{0} I ¨ ^{0}$ at Belle

Belle Collaboration, J. Borah, B. Bhuyan +211

We report the results of the first search for the decay $B_{s}^{0} \to I ¨ ^{0} I ¨ ^{0}$ using $121.4 f b^{- 1}$ of data collected at the $I^¥ (5 S)$ resonance with the Belle detecto…

Study of Excited $I^_{c}$ States Decaying into $I^_{c}^{0}$ and $I^_{c}^{+}$ Baryons

Belle Collaboration, J. Yelton, I. Adachi +151

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…

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…

physics.ins-det2014

Ortho-positronium observation in the Double Chooz Experiment

Y. Abe, J. C. dos Anjos, J. C. Barriere +143

The Double Chooz experiment measures the neutrino mixing angle $I^¸_{13}$ by detecting reactor $I^ˉ ½_{e}$ via inverse beta decay. The positron-neutron space and time coincidence all…

Measurements of isospin asymmetry and difference of direct $C P$ asymmetries in inclusive $B \to X_{s} I^^{3}$ decays

S. Watanuki, A. Ishikawa, I. Adachi +174

We report measurements of isospin asymmetry $I^_{0 -}$ and difference of direct $C P$ asymmetries $I^ A_{C P}$ between charged and neutral $B \to X_{s} I^^{3}$ decays. This analysis is based…

Search for $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼$ Decays at the Belle Experiment

Belle Collaboration, A. Sibidanov, K. E. Varvell +184

We report the result of a search for the decay $B^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼$ . The signal events are selected based on the presence of a high momentum muon and the topology of the rest…

First Measurement of Inclusive B -> X_s eta Decays

Belle Collaboration, K. Nishimura, T. E. Browder +140

We report a first measurement of inclusive B -> X_s eta decays, where X_s is a charmless state with unit strangeness. The measurement is based on a pseudo-inclusive reconstruction…

hep-ex2011

Search for CP violation in tau -> K^0_S pi nu_tau decays at Belle

M. Bischofberger, H. Hayashii, K. Adamczyk +113

We report on a search for CP violation in tau -> K^0_S pi nu_tau decays using a data sample of 699 fb^{-1} collected in the Belle experiment at the KEKB electron-positron asymmetri…

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…

Production cross sections of hyperons and charmed baryons from $e^{+} e^{-}$ annihilation near $s = 10.52$ ~GeV

Belle Collaboration, M. Niiyama, M. Sumihama +167

We measure the inclusive production cross sections of hyperons and charmed baryons from $e^{+} e^{-}$ annihilation using a 800 fb $^{- 1}$ data sample taken near the $I^¥ (4 S)$ resonance wi…

Search for lepton-flavor-violating $I ¨ $ decays into a lepton and a vector meson using the full Belle data sample

Belle Collaboration, N. Tsuzuki, K. Inami +180

Charged-lepton-flavor-violation is predicted in several new physics scenarios. We update the analysis of $I ¨ $ lepton decays into a light charged lepton ( $ℓ$ = $e^{\pm}$ or $Î¼^{…

Search for $X Y Z$ states in $I^¥ (1 S)$ inclusive decays

Belle Collaboration, C. P. Shen, C. Z. Yuan +152

The branching fractions of the $I^¥ (1 S)$ inclusive decays into final states with a $J / I ¨ $ or a $I ¨ (2 S)$ are measured with improved precision to be $\BR(Î¥(1S)\to J/Ï+ {\rm anything…

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…

Study of $B^{+} \to p n I ¨ ^{0}$

Belle Collaboration, K. -N. Chu, Y. -R. Lin +203

We search for the tree-diagram dominated process $B^{+} \to p n I ¨ ^{0}$ , using a data sample of $772 \times 1 0^{6} B B$ pairs collected at the $I^¥ (4 S)$ resona…

Measurement of the branching fraction of $I^_{c}^{+} \to p I ¨ $ decay at Belle

Belle Collaboration, S. X. Li, L. K. Li +193

Using 980.6 $f b^{- 1}$ of data collected with the Belle detector operating at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present a measurement of the branching fraction of…

Measurement of the branching fraction of $I^_{c}^{0} \to I^_{c}^{+} I ¨ ^{-}$ at Belle

Belle Collaboration, S. S. Tang, Y. B. Li +171

Based on a data sample of 983 fb $^{- 1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present the study of the heavy-flavor-conserving decay…

hep-ex2011

Observation of B- to pbar Lambda D0 at Belle

P. Chen, M. -Z. Wang, I. Adachi +137

We study B- meson decays to pbar Lambda D(*)0 final states using a sample of 657 * 10^6 B Bbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asy…

Search for the dark photon in $B^{0} \to A^{'} A^{'}$ , $A^{'} \to e^{+} e^{-}$ , $I^¼^{+} I^¼^{-}$ , and $I ¨ ^{+} I ¨ ^{-}$ decays at Belle

S. -H. Park, Y. -J. Kwon, I. Adachi +216

We present a search for the dark photon $A^{'}$ in the $B^{0} \to A^{'} A^{'}$ decays, where $A^{'}$ subsequently decays to $e^{+} e^{-}$ , $I^¼^{+} I^¼^{-}$ , and $Ï^+ Ï^-…

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…

Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors

T. AbrahÃ£o, H. Almazan, J. C. dos Anjos +107

A study on cosmic muons has been performed for the two identical near and far neutrino detectors of the Double Chooz experiment, placed at $\sim$ 120 and $\sim$ 300 m.w.e. undergroun…

Measurement of the Resonant and Non-Resonant Branching Ratios in $I^_{c}^{0} \to I^^{0} K^{+} K^{-}$

J. T. McNeil, J. Yelton, J. Bennett +192

Using the entire data sample of $980$ $f b^{- 1}$ integrated luminosity collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present an amplitude…

Search for the process $e^{+} e^{-} \to J / I ¨ + X (1835)$ at $s \approx 10.6$ GeV

Belle Collaboration, X. H. He, J. Wang +116

We report the results of a search for the $X (1835)$ state in the process $e^{+} e^{-} \to J / I ¨ + X (1835)$ using a data sample of 672 fb $^{- 1}$ collected with the Belle detector at and near…

Study of $e^{+} e^{-} \to I^¥ (1S, 2S) I^\cdot$ and $e^{+} e^{-} \to I^¥ (1S) I^\cdot^{'}$ at $s = 10.866$ GeV with the Belle detector

Belle Collaboration, E. Kovalenko, A. Garmash +179

We report the first observation of the processes $e^{+} e^{-} \to I^¥ (1S, 2S) I^\cdot$ at $s = 10.866$ ~GeV with a $10.2 I ¨ $ and $16.5 I ¨ $ significance respectively. The measured Born cross…

Amplitude analysis of e+e- => Y(nS)pi+pi- at sqrt(s)=10.865 GeV

A. Garmash, A. Bondar, A. Kuzmin +175

We report results on studies of the e+e- annihilation into three-body Y(nS)pi+pi- (n=1,2,3) final states including measurements of cross sections and the full amplitude analysis. T…

Measurements of $q^{2}$ Moments of Inclusive $B \to X_{c} ℓ^{+} I^½_{ℓ}$ Decays with Hadronic Tagging

Belle Collaboration, R. van Tonder, L. Cao +202

We present the measurement of the first to fourth order moments of the four-momentum transfer squared, $q^{2}$ , of inclusive $B \to X_{c} ℓ^{+} I^½_{ℓ}$ decays using the ful…

Reactor electron antineutrino disappearance in the Double Chooz experiment

Y. Abe, C. Aberle, J. C. dos Anjos +162

The Double Chooz experiment has observed 8,249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power x detector mass x livetime) exposur…

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…

hep-ex2025

First Measurement of Neutrino Emissions from Spent Nuclear Fuel by the Double Chooz Experiment

Double Chooz Collaboration, T. AbrahÃ£o, H. Almazan +91

Neutrino emission from nuclear reactors provides real-time insights into reactor power and fuel evolution, with potential applications in monitoring and nuclear safeguards. Followi…

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…

Search for lepton-flavor-violating tau-lepton decays to $ℓ I^^{3}$ at Belle

K. Uno, K. Hayasaka, K. Inami +178

Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays $Ï^{\pm}\rightarrow…

Search for the $B \to Y (4260) K, Y (4260) \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays

Belle collaboration, R. Garg, V. Bhardwaj +172

We report the results of a search for the $B \to Y (4260) K, Y (4260) \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays. This study is based on a data sample corresponding to an integrated luminosity of 711~…

physics.ins-det2014

Letter of Intent to Construct a nuPRISM Detector in the J-PARC Neutrino Beamline

S. Bhadra, A. Blondel, S. Bordoni +47

As long-baseline neutrino experiments enter the precision era, the difficulties associated with understanding neutrino interaction cross sections on atomic nuclei are expected to l…

Measurement of the CKM Matrix Element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} I^½_{ℓ}$ at Belle

E. Waheed, P. Urquijo, I. Adachi +184

We present a new measurement of the CKM matrix element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} I^½_{ℓ}$ decays, reconstructed with the full Belle data set of $711 f b^{- 1}$ …

Observation of $I^_{c} (2930)^{0}$ and updated measurement of $B^{-} \to K^{-} I^_{c}^{+} I^ˉ _{c}^{-}$ at Belle

Belle Collaboration, Y. B. Li, C. P. Shen +178

We report the first observation of the $I^_{c} (2930)^{0}$ charmed-strange baryon with a significance greater than 5 $I ¨ $ . The $I^_{c} (2930)^{0}$ is found in its decay to $K^{-} I^_{c}^{+}$ …

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…

Search for CP violating charge asymmetry in B^+ -> J/psi K^+ decays

K. Sakai, T. Kawasaki, H. Aihara +136

We present the result of a search for charge asymmetry in B^+ -> J/psi K^+ decays. The CP-violating charge asymmetry is measured to be A_CP(B^+ -> J/psi K^+) = [-0.76 +/- 0.50 (sta…

Measurement of $B$ ( $B_{s} \to D_{s} X$ ) with $B_{s}$ Semileptonic Tagging

B. Wang, K. Kinoshita, H. Aihara +153

We report the first direct measurement of the inclusive branching fraction $B (B_{s} \to D_{s} X)$ via $B_{s}$ tagging in $e^{+} e^{-} \to I^¥$ (5S) events. Tagging is accomplis…

Measurements of Branching Fractions and Time-dependent CP Violating Asymmetries in $B^{0} \to D^{(*) \pm} D^{\mp}$ Decays

Belle Collaboration, M. RÃ¶hrken, I. Adachi +161

We report measurements of branching fractions and time-dependent CP asymmetries in $B^{0} \to D^{+} D^{-}$ and $B^{0} \to D^{*\pm} D^{\mp}$ decays using a data sample that contains $…

Measurement of the charm-mixing parameter $y_{C P}$ in $D^{0} \to K_{S}^{0} I ¨ $ decays at Belle

Belle Collaboration, M. Nayak, D. Cinabro +179

We report the first measurement of the charm-mixing parameter $y_{C P}$ in $D^{0}$ decays to the $C P$ -odd final state $K_{S}^{0} I ¨ $ . The study uses the full Belle $e^{+} e^{-}$ annihil…

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 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…

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 the Branching Fraction of the Decay $B^{+} \to I ¨ ^{+} I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ in Fully Reconstructed Events at Belle

The Belle Collaboration, C. BeleÃ±o, A. Frey +160

We present an analysis of the exclusive $B^{+} \to I ¨ ^{+} I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ decay, where $ℓ$ represents an electron or a muon, with the assumption of charge-conjugation symm…

Measurement of the Decays $B \to I^\cdot ℓ I^½_{ℓ}$ and $B \to I^\cdot^{'} ℓ I^½_{ℓ}$ in Fully Reconstructed Events at Belle

Belle Collaboration, C. BeleÃ±o, J. Dingfelder +142

We report branching fraction measurements of the decays $B^{+} \to I^\cdot ℓ^{+} I^½_{ℓ}$ and $B^{+} \to I^\cdot^{'} ℓ^{+} I^½_{ℓ}$ based on 711~fb $^{- 1}$ of data collected near the $I^¥ (4 S)$ resona…

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

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +550

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…

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…

Measurements of the masses and widths of the $I^£_{c} (2455)^{0/ ++}$ and $I^£_{c} (2520)^{0/ ++}$ baryons

Belle Collaboration, S. -H. Lee, B. R. Ko +160

We present measurements of the masses and decay widths of the baryonic states $I^£_{c} (2455)^{0/ ++}$ and $I^£_{c} (2520)^{0/ ++}$ using a data sample corresponding to an integrated lum…

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

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

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…

Evidence of $I^¥ (1 S) \to J / I ¨ + I ¨ _{c 1}$ and search for double-charmonium production in $I^¥ (1 S)$ and $I^¥ (2 S)$ decays

Belle Collaboration, S. D. Yang, C. P. Shen +155

Using data samples of $102 \times 1 0^{6}$ $I^¥ (1 S)$ and $158 \times 1 0^{6}$ $I^¥ (2 S)$ events collected with the Belle detector, a first experimental search has been made for double-charmoniu…

Search for doubly charmed baryons and study of charmed strange baryons at Belle

Y. Kato, T. Iijima, I. Adachi +167

We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980 fb^-1 data sample collected with the Belle detector at the…

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}…

Updated Cross Section Measurement of $e^{+} e^{-} \to K^{+} K^{-} J / I ¨ $ and $K_{S}^{0} K_{S}^{0} J / I ¨ $ via Initial State Radiation at Belle

Belle Collaboration, C. P. Shen, C. Z. Yuan +159

The cross sections of the processes $e^{+} e^{-} \to K^{+} K^{-} J / I ¨ $ and $K_{S}^{0} K_{S}^{0} J / I ¨ $ are measured via initial state radiation at center-of-mass energies between the threshold and 6.…

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…

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

F. AbudinÃ©n, I. Adachi, R. Adak +565

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…

First Observation of the Decay B0->psi(2S)pi0

V. Chobanova, J. Dalseno, C. Kiesling +180

We report a measurement of the $B^{0} \to I ¨ (2 S) I ¨ ^{0}$ branching fraction based on the full $I^¥ (4 S)$ data set of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected by the Belle detect…

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

Belle II Collaboration, F. AbudinÃ©n, I. Adachi +545

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 $…

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

Y. Sato, T. Iijima, K. Adamczyk +170

We report a measurement of the 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 $\el…

Observation of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ _{b J}$ and search for $X_{b} \to I ¨ I^¥ (1 S)$ at $s \sim 10.867$ GeV

Belle Collaboration, X. H. He, C. P. Shen +158

The $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I ¨ _{b J}$ ( $J = 0, 1, 2$ ) processes are studied using a 118~fb $^{- 1}$ data sample collected at a center-of-mass energy of 10.867 GeV, in the $I^¥ (10860)$ …

Measurement of the branching fraction of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ decays with the semileptonic tagging method and the full Belle data sample

Belle Collaboration, A. Abdesselam, I. Adachi +392

We report a measurement of the branching fraction of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ decays using a data sample of $772 \times 1 0^{6} B B ˉ$ pairs, collected at the $I^¥ (4 S)$ resonance with…

Study of Exclusive $B \to I ¨ e^{+} I^½_{e}$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb $^{- 1}$ of Belle II Data

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

We present a reconstruction of the semileptonic decays $B^{0} \to I ¨ ^{-} e^{+} I^½_{e}$ and $B^{+} \to I ¨ ^{0} e^{+} I^½_{e}$ in a sample corresponding to 189.3 fb $^{- 1}$ of Belle II data, using even…

Search for lepton-number- and baryon-number-violating tau decays at Belle

D. Sahoo, G. B. Mohanty, K. Trabelsi +222

We search for lepton-number- and baryon-number-violating decays $I ¨ ^{-} \to p e^{+} e^{-}$ , $p e^{-} e^{-}$ , $p e^{+} I^¼^{-}$ , $p e^{-} I^¼^{+}$ , $\overline{p…

Evidence for Semileptonic B- to p pbar l nubar Decays

K. -J. Tien, M. -Z. Wang, I. Adachi +166

We find evidence for the semileptonic baryonic decay $B^{-} \to p p ˉ ℓ^{-} I^ˉ ½_{ℓ}$ ( $ℓ = e, I^¼$ ), based on a data sample of 772 million $B B ˉ$ pairs collected at the $Î¥(4S)…

Search for a massive invisible particle $X^{0}$ in $B^{+} \to e^{+} X^{0}$ and $B^{+} \to I^¼^{+} X^{0}$ decays

C. -S. Park, Y. -J. Kwon, I. Adachi +165

We present a search for a non-Standard-Model invisible particle $X^{0}$ in the mass range $0.1 - 1.8 GeV / c^{2}$ in $B^{+} \to e^{+} X^{0}$ and $B^{+} \to I^¼^{+} X^{0}$ d…

Search for rare decays $B^{+} \to D_{s}^{() +} I^\cdot$ , $D_{s}^{() +} K ˉ^{0}$ , $D^{+} I^\cdot$ , and $D^{+} K^{0}$

Belle Collaboration, M. Kumar, V. Bhardwaj +196

We present a study of rare decay modes $B^{+} \to D_{s}^{+} h^{0}$ , $B^{+} \to D_{s}^{*+} h^{0}$ , and $B^{+} \to D^{+} h^{0}$ , where $h^{0}$ denotes the neutral mesons $I^\cdot$ or $K^{…

Measurement of gamma gamma* --> pi0 transition form factor at Belle

The Belle Collaboration, S. Uehara, Y. Watanabe +158

We report a measurement of the process gamma gamma* --> pi0 with a 759 fb^{-1} data sample recorded with the Belle detector at the KEKB asymmetric-energy e+e- collider. The pion tr…

Search for $C P$ violation in $D_{(s)}^{+} \to K^{+} K_{S}^{0} h^{+} h^{-}$ $(h = K, I ¨ )$ decays and observation of the Cabibbo-suppressed decay $D_{s}^{+} \to K^{+} K^{-} K_{S}^{0} I ¨ ^{+}$

Belle Collaboration, H. K. Moon, E. Won +205

We search for $C P$ violation by measuring a $T$ -odd asymmetry in the Cabibbo-suppressed $D^{+} \to K^{+} K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decay, and in the Cabibbo-favored $D^{+}_{s}\…

Measurement of the $B^{+} / B^{0}$ production ratio in $e^{+} e^{-}$ collisions at the $I^¥ (4 S)$ resonance using $B \to J / I ¨ (ℓℓ) K$ decays at Belle

Belle Collaboration, S. Choudhury, S. Sandilya +197

We measure the ratio of branching fractions for the $I^¥ (4 S)$ decays to $B^{+} B^{-}$ and $B^{0} B ˉ^{0}$ using $B^{+} \to J / I ¨ (ℓℓ) K^{+}$ and $B^0 \rightarrow J/Ï(\ell\ell)…

Search for the decay $B^{+} \to K^{* 0} K^{*+}$ at Belle

Belle Collaboration, Y. M. Goh, Y. Unno +131

We report a search for the rare charmless decay $B^{+} \to K^{* 0} K^{*+}$ using a data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected at the $I^¥ (4 S)$ resonanc…

physics.ins-det2011

Development and evaluation of 10-inch Photo-Multiplier Tubes for the Double Chooz experiment

T. Matsubara, T. Haruna, T. Konno +19

The goal of Double Chooz experiment is a precise measurement of the last unknown mixing angle theta_13 using two identical detectors placed at far and near sites from Chooz reactor…

Observation of the radiative decays of $I^¥ (1 S)$ to $I ¨ _{c 1}$

P. Katrenko, I. Adachi, H. Aihara +166

We report the first observation of the radiative decay of the $I^¥ (1 S)$ into a charmonium state. The statistical significance of the observed signal of $I^¥ (1 S) \to I^^{3} I ¨ _{c 1}$ is 6.3…

Search for the decay $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ at the Belle experiment

Belle Collaboration, T. V. Dong, T. Luo +193

This letter presents a search for the rare flavor-changing neutral current process $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ using data taken with the Belle detector at the KEKB as…

Search for heavy neutrinos at Belle

Belle Collaboration, D. Liventsev, I. Adachi +173

We report on a search for heavy neutrinos in B-meson decays. The results are obtained using a data sample that contains 772x10^6 BB-bar pairs collected at the Upsilon(4S) resonance…

physics.ins-det2018

Novel event classification based on spectral analysis of scintillation waveforms in Double Chooz

T. AbrahÃ£o, H. Almazan, J. C. dos Anjos +94

Liquid scintillators are a common choice for neutrino physics experiments, but their capabilities to perform background rejection by scintillation pulse shape discrimination is gen…

Measurements of Partial Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} I^½_{ℓ}$ Decays with Hadronic Tagging

Belle Collaboration, L. Cao, W. Sutcliffe +236

We present measurements of partial branching fractions of inclusive semileptonic $B \to X_{u} ℓ^{+} I^½_{ℓ}$ decays using the full Belle data set of 711 fb $^{- 1}$ of integrat…

Evidence for a vector charmonium-like state in $e^{+} e^{-} \to D_{s}^{+} D_{s 2}^{*} (2573)^{-} + c . c .$

Belle Collaboration, S. Jia, C. P. Shen +173

We report the measurement of $e^{+} e^{-} \to D_{s}^{+} D_{s 2}^{*} (2573)^{-} + c . c .$ via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb $^{- 1}$ collected with t…

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 Differential Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} I^½_{ℓ}$ Decays

Belle Collaboration, L. Cao, W. Sutcliffe +198

The first measurements of differential branching fractions of inclusive semileptonic $B \to X_{u} ℓ^{+} I^½_{ℓ}$ decays are performed using the full Belle data set of 711 f…

hep-ex2011

A Study of Reactor Neutrino Monitoring at Experimental Fast Reactor JOYO

H. Furuta, Y. Fukuda, T. Hara +19

We carried out a study of neutrino detection at the experimental fast reactor JOYO using a 0.76 tons gadolinium loaded liquid scintillator detector. The detector was set up on the…

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 $…

First Observation of Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: $I^_{c}^{+} \to p K^{+} I ¨ ^{-}$

Belle Collaboration, S. B. Yang, K. Tanida +190

We report the first observation of the decay $I^_{c}^{+} \to p K^{+} I ¨ ^{-}$ using a 980 $f b^{- 1}$ data sample collected by the Belle detector at the KEKB asymmetr…

Search for $D^{0}$ decays to invisible final states at Belle

Y. -T. Lai, M. -Z. Wang, I. Adachi +159

We report the result from the first search for $D^{0}$ decays to invisible final states. The analysis is performed on a data sample of 924 $fb^{- 1}$ collected at and near the $Î…

Measurement of branching fractions and search for $C P$ violation in $D^{0} \to I ¨ ^{+} I ¨ ^{-} I^\cdot$ , $D^{0} \to K^{+} K^{-} I^\cdot$ , and $D^{0} \to I ¨ I^\cdot$ at Belle

Belle Collaboration, L. K. Li, A. J. Schwartz +187

We measure the branching fractions and $C P$ asymmetries for the singly Cabibbo-suppressed decays $D^{0} \to I ¨ ^{+} I ¨ ^{-} I^\cdot$ , $D^{0} \to K^{+} K^{-} I^\cdot$ , and $D^{0} \to I ¨ I^\cdot$ , using 980 fb…

Search for the lepton flavour violating decays $B^{+} \to K^{+} I ¨ ^{\pm} ℓ^{\mp}$ ( $ℓ = e, I^¼$ ) at Belle

Belle Collaboration, S. Watanuki, G. de Marino +176

We present a search for the lepton-flavour-violating decays $B^{+} \to K^{+} I ¨ ^{\pm} ℓ^{\mp}$ , with $ℓ = (e, I^¼)$ , using the full data sample of $772 \times 1 0^{6}$ $B B$ pa…

Angular analysis of the $e^{+} e^{-} \to D^{() \pm} D^{\mp}$ process near the open charm threshold using initial-state radiation

Belle Collaboration, V. Zhukova, H. Aihara +149

We report a new measurement of the exclusive $e^{+} e^{-} \to D^{(*) \pm} D^{*\mp}$ cross sections as a function of the center-of-mass energy from the $D^{(*) \pm} D^{*\mp}$ threshold…

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…

Measurements of the branching fractions of $I^_{c}^{0} \to I^ K_{S}^{0}$ , $I^_{c}^{0} \to I^£^{0} K_{S}^{0}$ , and $I^_{c}^{0} \to I^£^{+} K^{-}$ decays at Belle

Belle collaboration, Y. Li, J. X. Cui +213

Using the entire data sample of $980 fb^{- 1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present measurements of the branching f…

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

S. Choudhury, S. Sandilya, K. Trabelsi +220

We present measurements of the branching fractions for the decays $B \to K I^¼^{+} I^¼^{-}$ and $B \to K e^{+} e^{-}$ , and their ratio ( $R_{K}$ ), using a data sample of 711 $f b^{- 1}$ tha…

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 $I^_{c}^{+} K^{-}$ .…

Dalitz analysis of $D^{0} \to K^{-} I ¨ ^{+} I^\cdot$ decays at Belle

Belle Collaboration, Y. Q. Chen, L. K. Li +177

We present the results of the first Dalitz plot analysis of the decay $D^{0} \to K^{-} I ¨ ^{+} I^\cdot$ . The analysis is performed on a data set corresponding to an integrated luminosity of…

Evidence of a new excited charmed baryon decaying to $I^£_{c} (2455)^{0, ++} I ¨ ^{\pm}$

Belle Collaboration, Y. B. Li, C. P. Shen +194

We present the study of $B ˉ^{0} \to I^£_{c} (2455)^{0, ++} I ¨ ^{\pm} p ˉ$ decays based on $772 \times 1 0^{6}$ $B B ˉ$ events collected with the Belle detector at the KEKB as…

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…

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

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…

Search for CP Violation in the Decay $D^{+} \to K_{S}^{0} K^{+}$

B. R. Ko, E. Won, I. Adachi +142

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

Study of $K_{S}^{0}$ pair production in single-tag two-photon collisions

Belle Collaboration, M. Masuda, S. Uehara +185

We report a measurement of the cross section for $K_{S}^{0}$ pair production in single-tag two-photon collisions, $Î³^* Î³\to K^0_S K^0_S$, for $Q^{2}$ up to 30 GeV $^{2}$ , where $Q^{2}$ is t…

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…