Niigata University

output

19922026

most citedSciPy 1.0--Fundamental Algorithms for Scientific Computing in Python

40.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2018Show all

63 papers · 1 filter

hep-ex2018★ 3 cited

Measurements of branching fraction and direct $C P$ asymmetry in $B^{\pm} \to K_{S}^{0} K_{S}^{0} K^{\pm}$ and a search for $B^{\pm} \to K_{S}^{0} K_{S}^{0} π^{\pm}$

The Belle Collaboration, A. B. Kaliyar, P. Behera +197

We study charmless hadronic decays of charged $B$ mesons to the final states $K_{S}^{0} K_{S}^{0} K^{\pm}$ and $K_{S}^{0} K_{S}^{0} π^{\pm}$ using a $711 f b^{- 1}$ data sample that cont…

hep-lat2018★ 4 cited

Equation of state near the first order phase transition point of SU(3) gauge theory using gradient flow

Mizuki Shirogane, Shinji Ejiri, Ryo Iwami +5

We study energy gap (latent heat) between the hot and cold phases at the first order phase transition point of the SU(3) gauge theory. Performing simulations on lattices with vario…

hep-ph2018★ 14 cited

Resonant leptogenesis at TeV-scale and neutrinoless double beta decay

Takehiko Asaka, Takahiro Yoshida

We investigate a resonant leptogenesis scenario by quasi-degenerate right-handed neutrinos which have TeV-scale masses. Especially, we consider the case when two right-handed neutr…

hep-ph2018★ 193 cited

Trimaximal Neutrino Mixing from Modular A4 Invariance with Residual Symmetries

P. P. Novichkov, S. T. Petcov, M. Tanimoto

We construct phenomenologically viable models of lepton masses and mixing based on modular $A_{4}$ invariance broken to residual symmetries $Z_{3}^{T}$ or $Z_{3}^{S T}$ …

hep-ph2018★ 159 cited

Finite modular subgroups for fermion mass matrices and baryon/lepton number violation

Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +3

We study a flavor model that the quark sector has the $S_{3}$ modular symmetry,while the lepton sector has the $A_{4}$ modular symmetry. Our model leads to characteristic quark mass ma…

hep-ph2018★ 168 cited

CP violation of quarks in $A_{4}$ modular invariance

Hiroshi Okada, Morimitsu Tanimoto

We discuss the quark mass matrices in the $A_{4}$ modular symmetry, where the $A_{4}$ triplet of Higgs is introduced for each up-quark and down-quark sectors, respectively. The model h…

astro-ph.HE2018★ 18 cited

Discrepancy in tidal deformability of GW170817 between the Advanced LIGO twin detectors

Tatsuya Narikawa, Nami Uchikata, Kyohei Kawaguchi +4

We find that the Hanford and Livingston detectors of Advanced LIGO derive a distinct posterior probability distribution of binary tidal deformability tilde{Lambda} of the first bin…

hep-ex2018★ 10 cited

Observation of $e^{+} e^{-} \to γ χ_{c 1}$ and search for $e^{+} e^{-} \to γ χ_{c 0}, γ χ_{c 2},$ and $γ η_{c}$ at $s$ near 10.6 GeV at Belle

Belle Collaboration, S. Jia, X. L. Wang +190

Using data samples of 89.5~fb $^{- 1}$ , 711.0~fb $^{- 1}$ , and 121.4~fb $^{- 1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider at center-of-mass energ…

nucl-th2018★ 6 cited

Coexistence of Anderson-Bogoliubov phonon and quadrupole cluster vibration in neutron star inner crust

Tsenenori Inakura, Masayuki Matsuo

Background: Low-lying collective excitations of inner crust matter in neutron stars are expected to have impact on observables such as the quasi-periodic oscillation in giant flare…

math.AG2018

A note on retracts of polynomial rings in three variables

Takanori Nagamine

In Costa's paper published in 1977, he asks us whether every retract of $k^{[n]}$ is also the polynomial ring or not, where $k$ is a field. In this paper, we give an affirmative an…

gr-qc2018★ 535 cited

KAGRA: 2.5 Generation Interferometric Gravitational Wave Detector

T. Akutsu, M. Ando, K. Arai +188

The recent detections of gravitational waves (GWs) reported by LIGO/Virgo collaborations have made significant impact on physics and astronomy. A global network of GW detectors wil…

math.AC2018

An algorithm for computing Grothendieck local residues II --- general case ---

Katsuyoshi Ohara, Shinichi Tajima

Grothendieck local residue is considered in the context of symbolic computation. Based on the theory of holonomic D-modules, an effective method is proposed for computing Grothendi…

math.KT2018★ 2 cited

An infinite-dimensional index theorem and the Higson-Kasparov-Trout algebra

Doman Takata

We have been studying the index theory for some special infinite-dimensional manifolds with a "proper cocompact" actions of the loop group LT of the circle T, from the viewpoint of…

hep-ex2018★ 52 cited

First measurements of absolute branching fractions of $Ξ_{c}^{0}$ at Belle

Belle Collaboration, Y. B. Li, C. P. Shen +158

We present the first measurements of absolute branching fractions of $Ξ_{c}^{0}$ decays into $Ξ^{-} π^{+}$ , $Λ K^{-} π^{+}$ , and $p K^{-} K^{-} π^{+}$ final states. The measurements are made using a…

math.NA2018

Fast Algorithms for Computing Eigenvectors of Matrices via Pseudo Annihilating Polynomials

Shinichi Tajima, Katsuyoshi Ohara, Akira Terui

An efficient algorithm for computing eigenvectors of a matrix of integers by exact computation is proposed. The components of calculated eigenvectors are expressed as polynomials i…

eess.SP2018★ 2 cited

Convolutional-Sparse-Coded Dynamic Mode Decomposition and Its Application to River State Estimation

Yuhei Kaneko, Shogo Muramatsu, Hiroyasu Yasuda +4

This work proposes convolutional-sparse-coded dynamic mode decomposition (CSC-DMD) by unifying extended dynamic mode decomposition (EDMD) and convolutional sparse coding. EDMD is a…

gr-qc2018★ 39 cited

Comparison of various methods to extract ringdown frequency from gravitational wave data

Hiroyuki Nakano, Tatsuya Narikawa, Ken-ichi Oohara +7

The ringdown part of gravitational waves in the final stage of merger of compact objects tells us the nature of strong gravity which can be used for testing the theories of gravity…

math.AG2018★ 1 cited

Rationality problem for norm one tori

Akinari Hoshi, Aiichi Yamasaki

We classify stably/retract rational norm one tori in dimension $p - 1$ where $p$ is a prime number and in dimension up to ten with some minor exceptions.

nucl-th2018★ 5 cited

Constrained correlated-Gaussians for hyperspherical calculations

Y. Suzuki, K. Varga

We formulate a hyperspherical approach within standard configuration interaction calculations aiming at a description of large-scale dynamics of $N$ -particle system. The channel wa…

hep-ex2018★ 46 cited

Observation of $Ξ (1620)^{0}$ and evidence for $Ξ (1690)^{0}$ in $Ξ_{c}^{+} \to Ξ^{-} π^{+} π^{+}$ decays

Belle collaboration, M. Sumihama, I. Adachi +183

We report the first observation of the doubly-strange baryon $Ξ (1620)^{0}$ in its decay to $Ξ^{-} π^{+}$ via $Ξ_{c}^{+} \to Ξ^{-} π^{+} π^{+}$ decays based on a $980 fb^{- 1}$ data sa…

hep-ex2018★ 32 cited

Search for the rare decay of $B^{+} \to ℓ^{+} ν_{ℓ} γ$ with improved hadronic tagging

M. Gelb, F. U. Bernlochner, P. Goldenzweig +184

We present the result of the search for the rare $B$ meson decay of $B^{+} \to ℓ^{+} ν_{ℓ} γ$ with $ℓ = e, μ$ . For the search the full data set recorded by the Belle experim…

hep-ex2018★ 6 cited

Search for $C P$ violation with kinematic asymmetries in the $D^{0} \to K^{+} K^{-} π^{+} π^{-}$ decay

Belle Collaboration, J. B. Kim, E. Won +182

We search for $C P$ violation in the singly-Cabibbo-suppressed decay $D^{0} \to K^{+} K^{-} π^{+} π^{-}$ using data corresponding to an integrated luminosity of $988\text{ }{\rm…

hep-ex2018★ 3 cited

Measurement of time-dependent $C P$ violation in $B^{0} \to K_{S}^{0} π^{0} π^{0}$ decays

Belle Collaboration, Y. Yusa, H. Aihara +155

We report a measurement of time-dependent $C P$ violation in $B^{0} \to K_{S}^{0} π^{0} π^{0}$ decays using a data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected by the Belle experime…

hep-ex2018★ 9 cited

Measurement of the branching fraction and time-dependent $C P$ asymmetry for $B^{0} \to J / ψ π^{0}$ decays

Belle Collaboration, B. Pal, A. J. Schwartz +156

We measure the branching fraction and time-dependent $C P$ -violating asymmetry for $B^{0} \to J / ψ π^{0}$ decays using a data sample of 711 $f b^{- 1}$ collected on the $Υ (4 S)$ resonan…

Measurements of branching fraction and direct CP asymmetry in B±→KS0​KS0​K± and a search for B±→KS0​KS0​π±