Publications (451)
Prospects for -ray observations of the Perseus galaxy cluster with the Cherenkov Telescope Array
The Cherenkov Telescope Array Consortium, :, K. Abe +564
Galaxy clusters are expected to be dark matter (DM) reservoirs and storage rooms for the cosmic-ray protons (CRp) that accumulate along the cluster's formation history. Accordingly…
Indirect Search for Dark Matter from the Galactic Center and Halo with the Super-Kamiokande Detector
Kamiokande Collaboration, K. Abe, C. Bronner +269
We present a search for an excess of neutrino interactions due to dark matter in the form of Weakly Interacting Massive Particles (WIMPs) annihilating in the galactic center or hal…
Production of Prompt Charmonia in Annihilation at GeV
K. Abe
The production of prompt , , and is studied using a data sample collected with the Belle detector at the and 60 MeV below…
Measurement of the ratio Br(D0 --> pi+pi-pi0)/Br(D0 --> K-pi+pi0)
K. Abe
We report a high-statistics measurement of the relative branching fraction Br(D0 --> pi+pi-pi0)/Br(D0 --> K-pi+pi0). A 357 inverse fb data sample collected with the Belle detector…
Atmospheric neutrino oscillation analysis with sub-leading effects in Super-Kamiokande I, II, and III
Kamiokande Collaboration, R. Wendell, C. Ishihara +117
We present a search for non-zero theta_{13} and deviations of sin^2 theta_{23} from 0.5 in the oscillations of atmospheric neutrino data from Super-Kamiokande -I, -II, and -III. No…
Detector signal characterization with a Bayesian network in XENONnT
XENON Collaboration, E. Aprile, K. Abe +164
We developed a detector signal characterization model based on a Bayesian network trained on the waveform attributes generated by a dual-phase xenon time projection chamber. By per…
Supernova Relic Neutrino Search at Super-Kamiokande
Kamiokande Collaboration, K. Bays, T. Iida +104
A new Super-Kamiokande (SK) search for Supernova Relic Neutrinos (SRNs) was conducted using 2853 live days of data. Sensitivity is now greatly improved compared to the 2003 SK resu…
Extreme Blazars Observed with MAGIC: Second Catalog Release
K. Abe, S. Abe, J. Abhir +353
Extremely high-peaked BL Lac objects - also named extreme blazars - are among the most energetic and persistent extragalactic accelerators in the Universe, defined by a synchrotron…
Measurements of the and -induced Coherent Charged Pion Production Cross Sections on by the T2K experiment
K. Abe, N. Akhlaq, R. Akutsu +380
We report an updated measurement of the -induced, and the first measurement of the -induced coherent charged pion production cross section on nuclei in t…
Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline
K. Abe, J. Amey, C. Andreopoulos +354
A class of extensions of the Standard Model allows Lorentz and CPT violations, which can be identified by the observation of sidereal modulations in the neutrino interaction rate.…
Combined SLD Measurement of Ab at the Z Resonance using Various Techniques
The SLD Collaboration, K. Abe
We present a new preliminary combination of measurements of the parity-violation parameter Ab made by the SLD collaboration using various experimental techniques. The techniques di…
Light WIMP search in XMASS
K. Abe, K. Hieda, K. Hiraide +43
A search for light dark matter using low-threshold data from the single phase liquid xenon scintillation detector XMASS, has been conducted. Using the entire 835 kg inner volume as…
Letter of Intent: The Hyper-Kamiokande Experiment --- Detector Design and Physics Potential ---
K. Abe, T. Abe, H. Aihara +38
We propose the Hyper-Kamiokande (Hyper-K) detector as a next generation underground water Cherenkov detector. It will serve as a far detector of a long baseline neutrino oscillatio…
WIMP Dark Matter Search using a 3.1 Tonne-Year Exposure of the XENONnT Experiment
E. Aprile, J. Aalbers, K. Abe +175
We report on a search for weakly interacting massive particle (WIMP) dark matter (DM) via elastic DM-xenon-nucleus interactions in the XENONnT experiment. We combine datasets from…
Direct Measurement of A_c using Inclusive Charm Tagging at the SLD Detector
The SLD Collaboration, K. Abe
We report a new measurement of A_c using data obtained by SLD in 1993-98. This measurement uses a vertex tag technique, where the selection of a c hemisphere is based on the recons…
Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water
Kamiokande Collaboration, M. Shinoki, K. Abe +238
Cosmic-ray muons that enter the Super-Kamiokande detector cause hadronic showers due to spallation in water, producing neutrons and radioactive isotopes. Those are a major backgrou…
Observation of Mixing-induced CP Violation in the Neutral B Meson System
Belle Collaboration, K. Abe
This report describes an observation of mixing-induced CP violation and a measurement of the CP violation parameter, sin(2phi_1), with the Belle detector at the KEKB asymmetric e+e…
First Indication of Solar B Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT
E. Aprile, J. Aalbers, K. Abe +164
We present the first measurement of nuclear recoils from solar B neutrinos via coherent elastic neutrino-nucleus scattering with the XENONnT dark matter experiment. The central…
Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K
K. Abe, N. Akhlaq, R. Akutsu +330
This paper reports the first simultaneous measurement of the double differential muon neutrino charged-current cross section on oxygen and carbon without pions in the final state a…
Direct Measurement of A_b using Charged Kaons at the SLD Detector
The SLD Collaboration, K. Abe
We report a new measurement of A_b using data obtained by SLD in 1997-98. This measurement uses a vertex tag technique, where the selection of a b hemisphere is based on the recons…
Comment on "e+ e- annhilation into J/psi J/psi"
Belle Collaboration, K. Abe
Using a data sample of 101.8 fb collected by the Belle detector at the KEKB asymmetric energy e+ e- collider, we confirm our published observation of e+ e- -> J/psi eta_c and find…
Measurement of Exclusive B -> X_ulnu Decays with D^(*)lnu Decay Tagging
K. Abe
We report on a measurement of the charmless semileptonic B decays, B0->pi^-l^+nu and B0->rho^-l^+nu, based on 140 fb^{-1} data collected with the Belle detector at the KEKB e^+e^-…
Self-shielding effect of a single phase liquid xenon detector for direct dark matter search
A. Minamino, K. Abe, Y. Ashie +41
Liquid xenon is a suitable material for a dark matter search. For future large scale experiments, single phase detectors are attractive due to their simple configuration and scalab…
Measurement of Branching Fraction and CP Asymmetry in B-> eta h Decays
K. Abe
We report measurements of to pseudoscalar-pseudoscalar decays with at least one eta meson in the final state using 140 fb^{-1} of data collected by the Belle detector at KEKB e…
Measurement of Branching Fractions in B0 -> J/Psi pi+pi- Decay
K. Abe
We report a measurement of the branching fractions in the B0->J/Psi pi+pi- decay based on a 140/fb data sample collected at the Upsilon(4S) energy with the Belle detector at the KE…
Excavation of a 69-m diameter and 94-m high cavern for the Hyper-Kamiokande detector
Y. Asaoka, H. Tanaka, S. Nakayama +14
The excavation of the Hyper-Kamiokande cavern, 600 m underground, is complete. Measuring 69 m in diameter and 94 m in height, it is among the world's largest rock caverns. A vertic…
Direct dark matter searches with the full data set of XMASS-I
XMASS Collaboration, K. Abe, K. Hiraide +29
Various WIMP dark matter searches using the full data set of XMASS-I, a single-phase liquid xenon detector, are reported in this paper. Stable XMASS-I data taking accumulated a tot…
Direct Measurements of A_b and A_c using Vertex/Kaon Charge Tags at SLD
SLD Collaboration, K. Abe
Exploiting the manipulation of the SLC electron-beam polarization, we present precise direct measurements of the parity violation parameters A_c and A_b in the Z boson - c quark an…
Results from the T2K experiment on neutrino mixing including a new far detector -like sample
The T2K Collaboration, K. Abe, S. Abe +404
We have made improved measurements of three-flavor neutrino mixing with 19.7(16.3) protons on target in (anti-)neutrino-enhanced beam modes. A new sample of muon-ne…
Measurement of neutrino-oxygen neutral-current quasi-elastic cross section using atmospheric neutrinos at Super-Kamiokande
Kamiokande Collaboration, L. Wan, K. Abe +164
Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detect…
Search for an excess of events in the Super-Kamiokande detector in the directions of the astrophysical neutrinos reported by the IceCube Collaboration
Kamiokande Collaboration, K. Abe, C. Bronner +158
We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events repor…
Precise Measurements of Atmospheric Muon Fluxes with the BESS Spectrometer
M. Motoki, T. Sanuki, S. Orito +36
The vertical absolute fluxes of atmospheric muons and muon charge ratio have been measured precisely at different geomagnetic locations by using the BESS spectrometer. The observat…
Measurement of the single production rate in neutral current neutrino interactions on water
T2K Collaboration, K. Abe, J. Amey +359
The single production rate in neutral current neutrino interactions on water in a neutrino beam with a peak neutrino energy of 0.6 GeV has been measured using the PÃD, one…
Measurement of Cosmic-Ray Proton and Antiproton Spectra at Mountain Altitude
T. Sanuki, M. Fujikawa, H. Matsunaga +22
Cosmic-ray proton and antiproton spectra were measured at mountain altitude, 2770 m above sea level. We observed more than 2 x 10^5 protons and 10^2 antiprotons in a kinetic energy…
A measurement of the rate of wrong-sign decays D0 -> K+ pi-
K. Abe
A D0 meson can decay to K+ pi- through doubly Cabibbo-suppressed decay or via D0-D0bar mixing. With 46.2 fb^{-1} of integrated luminosity collected by Belle, we have measured the t…
The XENONnT Dark Matter Experiment
XENON Collaboration, E. Aprile, J. Aalbers +192
The multi-staged XENON program at INFN Laboratori Nazionali del Gran Sasso aims to detect dark matter with two-phase liquid xenon time projection chambers of increasing size and se…
Measurement of Exclusive Decays with Decay Tagging
K. Abe
We report a measurement of the charmless semileptonic decays and , based on 253 fb of data collected with…
A New Search for tau -> mu gamma and tau -> e gamma Decays at Belle
The Belle Collaboration, K. Abe
We update our search for the lepton flavor violating tau -> mu gamma and tau -> e gamma decays based on 535/fb of data accumulated at the Belle experiment. No signal is found and w…
Measurement of the inclusive charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam
The T2K Collaboration, K. Abe, J. Adam +325
We report a measurement of the inclusive charged current cross sections on iron and hydrocarbon in the T2K on-axis neutrino beam. The measured inclusive charged current cro…
Measurement of the Differential Spectrum and Forward-Backward Asymmetry for
K. Abe
We report measurements of the differential spectrum and the forward-backward asymmetry for , where represents an electron or a muon, with a…
A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452
N. Isobe, M. Tashiro, K. Makishima +5
An 80 ksec Chandra ACIS observation of the radio galaxy 3C 452 is reported. A diffuse X-ray emission associated with the lobes has been detected with high statistical significance,…
The XLZD Design Book: Towards the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
XLZD Collaboration, J. Aalbers, K. Abe +441
This report describes the experimental strategy and technologies for XLZD, the next-generation xenon observatory sensitive to dark matter and neutrino physics. In the baseline desi…
Time-Dependent CP Asymmetries in b --> s qbar q Transitions and sin2phi1 in B0 --> J/psi K0 Decays with 386 Million BBbar Pairs
The Belle Collaboration, K. Abe
We present measurements of time-dependent CP asymmetries in B0 --> phi(1020) K0, eta' K0, Ks Ks Ks, Ks pi0, f0(980) Ks, omega Ks and K+ K- Ks decays based on a sample of 386 x 10^6…
New Measurements of Time-Dependent CP-Violating Asymmetries in B0 -> KsKsKs and Ks pi0 gamma Decays at Belle
K. Abe
We present new measurements of CP-violation parameters in B0 -> KsKsKs and Ks pi0 gamma decays based on a sample of 275 x 10^6 BBbar pairs collected at the Upsilon(4S) resonance wi…
Detection of the Geminga pulsar at energies down to 20 GeV with the LST-1 of CTAO
The CTAO-LST Project, :, K. Abe +331
Geminga is the third gamma-ray pulsar firmly detected by imaging atmospheric Cherenkov telescopes (IACTs) after the Crab and the Vela pulsars. Most of its emission is expected at t…
Study of three-body charmless B decays at Belle
K. Abe, The Belle Collaboration
Using a data sample of 21.3 fb collected by the Belle detector, three body charmless decays have been studied. With no assumptions on the intermediate m…
Search for proton decay via and with a 0.37 Mton-year exposure of Super-Kamiokande
Kamiokande Collaboration, N. Taniuchi, K. Abe +288
A search for proton decay into and a meson has been performed using data from a 0.373 Mtonyear exposure (6050.3 live days) of Super-Kamiokande. Compared to p…
Search for neutrinoless quadruple beta decay of Xe in XMASS-I
XMASS Collaboration, K. Abe, K. Hiraide +34
A search for the neutrinoless quadruple beta decay of Xe was conducted with the liquid-xenon detector XMASS-I using of the exposure. The…
Exotic Heavy Fermion State in the Filled Skutterudite PrFeP Uncovered by the de Haas-van Alphen Effect
H. Sugawara, T. D. Matsuda, K. Abe +6
We report the de Haas-van Alphen (dHvA) experiment on the filled skutterudite PrFeP exhibiting apparent Kondo-like behaviors in the transport and thermal properties. We…
First Search for Light Dark Matter in the Neutrino Fog with XENONnT
E. Aprile, J. Aalbers, K. Abe +165
We search for dark matter (DM) with a mass [3,12] using an exposure of 3.51 with the XENONnT experiment.We consider spin-indepen…
Improved Evidence for Direct CP Violation in B0 --> pi+ pi- Decays and Model-Independent Constraints on phi_2
Belle Collaboration, K. Abe
We present a new measurement of the time-dependent CP-violating parameters in B0 --> pi+ pi- decays with 275 x 10^6 BB-bar pairs collected with the Belle detector at the KEKB asymm…
Observation of B+ -> proton Lambdabar gamma
K. Abe
We report the first observation of the radiative hyperonic B decay B+ -> proton Lambdabar gamma, using a 140 fb-1 data sample recorded on the Upsilon(4S) resonance with the Belle d…
First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment
XENON Collaboration, E. Aprile, K. Abe +163
We report on the first search for nuclear recoils from dark matter in the form of weakly interacting massive particles (WIMPs) with the XENONnT experiment which is based on a two-p…
Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
The Belle Collaboration, K. Abe
We report the first observation of a narrow charmmonium state produced in the exclusive decay process B+->K+ pi+pi- J/psi. This state, which decays into pi+pi-J/psi, has a mass of…
Precise Measurement of the Neutrino Mixing Parameter θ_{23} from Muon Neutrino Disappearance in an Off-axis Beam
T2K Collaboration, K. Abe, J. Adam +338
New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter theta_{23}. Using an off-axis neutrino beam with a peak…
Measurement of double-differential muon neutrino charged-current interactions on CH without pions in the final state using the T2K off-axis beam
T2K collaboration, K. Abe, C. Andreopoulos +325
We report the measurement of muon neutrino charged-current interactions on carbon without pions in the final state at the T2K beam energy using 5.734 protons on targ…
Measurement of the Branching Fraction for B^0 --> a1(1260)+-pi-+ with 535 Million BBbar Pairs
The Belle Collaboration, K. Abe
We present a measurement of the branching fraction for the decay B^0->a1+(1260)pi- with a1+->pi+pi+pi- using a data sample containing 535x10^6 BBbar pairs collected with the Belle…
Identification of Pb and Po in the bulk of copper samples with a low-background alpha particle counter
XMASS collaboration, K. Abe, K. Hiraide +39
We established a method to assay Pb and Po contaminations in the bulk of copper samples using a low-background alpha particle counter. The achieved sensitivity for…
Precise Measurement of B Meson Lifetimes with Hadronic Decay Final States
Belle collaboration, K. Abe
The lifetimes of the B0bar and B- mesons are extracted from 29.1/fb of data collected with the Belle detector at the KEK B-factory. A fit to the decay length differences of neutral…
Search for neutron decay into an antineutrino and a neutral kaon in 0.401 megaton-years exposure of Super-Kamiokande
Kamiokande Collaboration, K. Yamauchi, K. Abe +261
We searched for bound neutron decay via predicted by the Grand Unified Theories in 0.401 Mtonyears exposure of all pure water phases in the Super-Kamiokande…
Observation of B -> K eta gamma
K. Abe
We report measurements of radiative B decays with K eta gamma final states, using a data sample of 140 /fb recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB…
Determination of |Vcb| using the semileptonic decay \bar{B}^0 --> D^{*+}e^-\barν
Belle Collaboration, K. Abe
We present a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vcb| using a 10.2 fb^{-1} data sample recorded at the Î¥(4S) resonance with the Belle detector at th…
Time-dependent angular analyses of B decays
K. Abe, M. Satpathy, H. Yamamoto
When both B0 and B0bar can decay to the same final state composed of two vectors, the interference between them and those among three polarization states result in intricate phenom…
Neutron Tagging following Atmospheric Neutrino Events in a Water Cherenkov Detector
K. Abe, Y. Haga, Y. Hayato +301
We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimate…
XMASS detector
K. Abe, K. Hieda, K. Hiraide +45
The XMASS project aims to detect dark matter, pp and Be solar neutrinos, and neutrinoless double beta decay using ultra pure liquid xenon. The first phase of the XMASS experi…
Measurement of phi_3 with Dalitz Plot Analysis of B->D(*)K Decay at Belle
Belle Collaboration, K. Abe
We present a measurement of the unitarity triangle angle phi_3 using a Dalitz plot analysis of the three-body decay of the neutral D meson from the B->D(*)K process. Using a 253 fb…
Search for neutrinos from annihilation of captured low-mass dark matter particles in the Sun by Super-Kamiokande
Kamiokande Collaboration, K. Choi, K. Abe +110
Super-Kamiokande (SK) can search for weakly interacting massive particles (WIMPs) by detecting neutrinos produced from WIMP annihilations occurring inside the Sun. In this analysis…
Search for event bursts in XMASS-I associated with gravitational-wave events
XMASS Collaboration, K. Abe, K. Hiraide +34
We performed a search for event bursts in the XMASS-I detector associated with 11 gravitational-wave events detected during LIGO/Virgo's O1 and O2 periods. Simple and loose cuts we…
Search for short baseline disappearance with the T2K near detector
K. Abe, J. Adam, H. Aihara +334
The T2K experiment has performed a search for disappearance due to sterile neutrinos using protons on target for a baseline of in a neutrino bea…
The Triggerless Data Acquisition System of the XENONnT Experiment
E. Aprile, J. Aalbers, K. Abe +162
The XENONnT detector uses the latest and largest liquid xenon-based time projection chamber (TPC) operated by the XENON Collaboration, aimed at detecting Weakly Interacting Massive…
Offline tagging of radon-induced backgrounds in XENON1T and applicability to other liquid xenon detectors
E. Aprile, J. Aalbers, K. Abe +164
This paper details the first application of a software tagging algorithm to reduce radon-induced backgrounds in liquid noble element time projection chambers, such as XENON1T and X…
GRB 221009A: Observations with LST-1 of CTAO and Implications for Structured Jets in Long Gamma-Ray Bursts
LST Collaboration, K. Abe, S. Abe +328
GRB 221009A is the brightest gamma-ray burst (GRB) observed to date. Extensive observations of its afterglow emission across the electromagnetic spectrum were performed, providing…
Very-high-energy gamma-ray detection and long-term multi-wavelength view of the flaring blazar B2 1811+31
K. Abe, S. Abe, J. Abhir +231
Among the blazars whose emission has been detected up to very-high-energy (VHE; 100 GeV < E < 100 TeV) gamma rays, intermediate synchrotron-peaked BL Lacs (IBLs) are quite rare. Th…
First joint oscillation analysis of Super-Kamiokande atmospheric and T2K accelerator neutrino data
Super-Kamiokande, T2K collaborations, : +545
The Super-Kamiokande and T2K collaborations present a joint measurement of neutrino oscillation parameters from their atmospheric and beam neutrino data. It uses a common interacti…
Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data
H. Abe, K. Abe, S. Abe +365
Aims. LST-1, the prototype of the Large-Sized Telescope for the upcoming Cherenkov Telescope Array Observatory, is concluding its commissioning in Observatorio del Roque de los Muc…
Search for Diffuse Supernova Neutrino Background with 956.2 days of Super-Kamiokande Gadolinium Dataset
K. Abe, S. Abe, Y. Asaoka +245
We report the search result for the Diffuse Supernova Neutrino Background (DSNB) in neutrino energies beyond 9.3~MeV in the gadolinium-loaded Super-Kamiokande (SK) detector with $2…
Search for Periodic Time Variations of the Solar B Neutrino Flux between 1996 and 2018 in Super-Kamiokande
K. Abe, C. Bronner, Y. Hayato +233
We report a search for time variations of the solar B neutrino flux using 5804 live days of Super-Kamiokande data collected between May 31, 1996, and May 30, 2018. Super-Kamiok…
Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 10 protons on target
K. Abe, N. Akhlaq, R. Akutsu +406
Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and non-standard interaction…
Performance of SK-Gd's Upgraded Real-time Supernova Monitoring System
Y. Kashiwagi, K. Abe, C. Bronner +236
Among multi-messenger observations of the next galactic core-collapse supernova, Super-Kamiokande (SK) plays a critical role in detecting the emitted supernova neutrinos, determini…
Improved Measurements of Color-Suppressed Decays B0bar -> D0 pi0, D0 eta and D0 omega
Belle Collaboration, K. Abe
We present preliminary improved measurements of the branching fractions of the color-suppressed decays B0bar -> D0 h0, where h0 represents the three light neutral mesons pi0, eta a…
Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes
K. Abe, S. Abe, J. Abhir +406
We present very-high-energy gamma-ray observations of two binary black hole merger candidates, GW240615_113620 and GW241125_010116, performed with the Major Atmospheric Gamma Imagi…
Measurement of the solar neutrino interaction rate below 3.49 MeV in Super-Kamiokande-IV
Kamiokande Collaboration, A. Yankelevich, K. Abe +250
Super-Kamiokande (SK) has observed solar neutrino elastic scattering at recoil electron kinetic energies () as low as 3.49 MeV to study neutrino flav…
Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment
V. Takhistov, K. Abe, Y. Haga +125
Search results for nucleon decays , , (where is an invisible, massless particle) as well as dinucleon decays $np \…
Time-Dependent CP Asymmetries in B0 -> Ks Pi0 gamma transition
K. Abe
We present measurements of CP-violation parameters in b -> s gamma transitions based on a sample of 386x10^6 BB pairs collected at the Y(4S) resonance with the Belle detector at th…
Observation of Radiative B Meson Decays into Higher Kaonic Resonances
K. Abe
We have studied radiative B meson decays into higher kaonic resonances decaying into a two-body or three-body final state, using a data sample of 21.3 fb recorded at the $Î¥…
Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280
K. Abe, N. Akhlaq, R. Akutsu +366
The electron (anti-)neutrino component of the T2K neutrino beam constitutes the largest background in the measurement of electron (anti-)neutrino appearance at the far detector. Th…
First combined analysis of neutrino and antineutrino oscillations at T2K
T2K Collaboration, K. Abe, J. Amey +316
T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beam. The data…
Studies of CP violation in decays
Belle Collaboration, K. Abe
An angular analysis for B decays into two vector mesons gives parameters sensitive to new physics. They are the decay amplitudes of the three helicity states, the asymmetry in trip…
Measurements of Branching Fractions and Polarization in B > K^* rho Decays
K. Abe
We present results of a study of the charmless vector-vector decays B^0 -> K^{*0} rho^0 and B^+ ->K^{*0} rho^+. The results are based on a 140 fb^{-1} data sample collected by the…
Prospects for dark matter observations in dwarf spheroidal galaxies with the Cherenkov Telescope Array Observatory
K. Abe, S. Abe, J. Abhir +491
The dwarf spheroidal galaxies (dSphs) orbiting the Milky Way are widely regarded as systems supported by velocity dispersion against self-gravity, and as prime targets for the sear…
Study of double charmonium production in e^+ e^- annihilation at \sqrt{s} ~ 10.6 GeV
K. Abe
We present a new analysis of double charmonium production in e^+ e^- annihilation. The observation of the processes e^+ e^- -> J/psi eta_c, J/psi chi_c0, and J/psi eta_c(2S) is con…
Observation of
K. Abe, The Belle Collaboration
We report the first observation of the decay using 21.3 fb of data collected by the Belle detector at the (4S) resonance. The preliminary result fo…
Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV
Kamiokande Collaboration, K. Abe, C. Bronner +178
An analysis of atmospheric neutrino data from all four run periods of \superk optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for $Îm^2…
A Long Baseline Neutrino Oscillation Experiment Using J-PARC Neutrino Beam and Hyper-Kamiokande
Kamiokande Working Group, K. Abe, H. Aihara +245
Hyper-Kamiokande will be a next generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger…
First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single- production channel containing at least one proton
K. Abe, N. Akhlaq, R. Akutsu +308
This paper reports the first T2K measurement of the transverse kinematic imbalance in the single- production channel of neutrino interactions. We measure the differential cro…
Atmospheric neutrino oscillation analysis with neutron tagging and an expanded fiducial volume in Super-Kamiokande I-V
Kamiokande Collaboration, T. Wester, K. Abe +233
We present a measurement of neutrino oscillation parameters with the Super-Kamiokande detector using atmospheric neutrinos from the complete pure-water SK I-V (April 1996-July 2020…
Searching for neutrinos from solar flares across solar cycles 23 and 24 with the Super-Kamiokande detector
K. Okamoto, K. Abe, Y. Hayato +242
Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of solar flares. We searched using…
First Measurement of the Electron Neutrino Charged-Current Pion Production Cross Section on Carbon with the T2K Near Detector
K. Abe, S. Abe, R. Akutsu +392
The T2K Collaboration presents the first measurement of electron neutrino-induced charged-current pion production on carbon in a restricted kinematical phase space. This is perform…
Search for solar axions in XMASS, a large liquid-xenon detector
K. Abe, K. Hieda, K. Hiraide +43
XMASS, a low-background, large liquid-xenon detector, was used to search for solar axions that would be produced by bremsstrahlung and Compton effects in the Sun. With an exposure…
An improved direct measurement of leptonic coupling asymmetries with polarized Z bosons
The SLD Collaboration, K. Abe
We present final measurements of the Z boson-lepton coupling asymmetry parameters Ae, Amu, and Atau with the complete sample of polarized Z bosons collected by the SLD detector at…