Akimasa Ishikawa

Profile Information

Affiliation: Assistant Professor, Graduate School of Science Physics Experimental Nuclear and Particle Physics Experimental Particle Physics, High Energy Accelerator Research Organization
: Chair of the committee for conferences in the TU Council for the Promotion of the ILC, Tohoku University

Degree: Doctor of Science(Nagoya University)

Other name(s) (e.g. nickname): ishikawa a
Researcher number: 40452833
J-GLOBAL ID: 201101009563803952
researchmap Member ID: 6000029678

Research Areas

Education

Apr, 1999 - Mar, 2002

Division of Particle and Astrophysical Science, Graduate School, Division of Natural Science, Nagoya University
Apr, 1997 - Mar, 1999

Division of Particle and Astrophysical Science, Graduate School, Division of Natural Science, Nagoya University
Apr, 1993 - Mar, 1997

Department of Physics, Faculty of Science, Nagoya University

Committee Memberships

Apr, 2020 - Present

member, Research Plan Committee of the Institute for Particle and Nuclear Studies at KEK
Nov, 2019 - Present

Secretary, Committee on Future Projects in High Energy Physics
Apr, 2020 - Mar, 2021

member, Steering Committee of Division of Elementary Particle Experiment, the Physical Society of Japan (JPS)
Apr, 2015 - Mar, 2017

委員, 高エネルギー加速器研究機構大型シミュレーション研究審査委員会
Apr, 2014 - Mar, 2015

会員, 東北ILC推進協議会広報戦略分科会

Awards

Jun, 2020

Belle II Special Award, Belle II Collaboration

Outstanding contribution of, Belle II operation under the, andemic situation

Papers

822

Search for the semileptonic decays <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>c</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>−</mml:mo></mml:msup></mml:math> at Belle

J. X. Cui, Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 109(5), Mar 15, 2024
Search for baryon and lepton number violating decays D →pℓ

S. Maity, R. Garg, S. Bahinipati, V. Bhardwaj, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad …

Physical Review D, 109(3), Feb 1, 2024
Search for the decay Bs0 →j/ψπ0 at Belle experiment

D. Kumar, B. Bhuyan, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, Sw Banerjee, M. Bauer, P. Behera …

Physical Review D, 109(3), Feb 1, 2024
Search for a dark leptophilic scalar produced in association with τ+τ- pair in e+e- annihilation at center-of-mass energies near 10.58 GeV

D. Biswas, Sw Banerjee, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett …

Physical Review D, 109(3), Feb 1, 2024
First Measurement of the Michel Parameter ζ′ in the τ- →μ- ν ¯ μντ Decay at Belle

D. Bodrov, P. Pakhlov, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu …

Physical Review Letters, 131(2), Jul 14, 2023
Study of the muon decay-in-flight in the τ- →μ- ν ¯ μντ decay to measure the Michel parameter ζ′

D. Bodrov, P. Pakhlov, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 108(1), Jul 1, 2023
Search for X ( 3872 ) → π+ π− π0 at Belle

J. H. Yin, E. Won, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad …

Physical Review D, 107(5), Mar 9, 2023 Peer-reviewed
Measurement of the branching fraction and search for CP violation in D0 → K0S K0S π+ π− decays at Belle

A. Sangal, A. J. Schwartz, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 107(5), Mar 7, 2023 Peer-reviewed
Measurement of the branching fraction of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>c</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>c</mml:mi><mml:mo>+</mml:mo></mml:msubsup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> at Belle

S. S. Tang, Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 107(3), Feb 15, 2023
Measurements of branching fractions of Λc+ → ς+η and Λc+ → ς+η′ and asymmetry parameters of Λc+ → ς+π0, Λc+ → ς+η, and Λc+ → ς+η′

S. X. Li, C. P. Shen, I. Adachi, J. K. Ahn, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 107(3), Feb 1, 2023
Measurement of branching fractions of $\Lambda_c^+\to{}pK_S^0K_S^0$ and $\Lambda_c^+\to{}pK_S^0\eta$ at Belle

Longke Li, Kay Kinoshita, Ichiro Adachi, Jung Keun Ahn, Hiroaki Aihara, Said Al Said, David Asner, Tagir Aushev, Rachid Ayad, Varghese Babu …

Phys.Rev.D, 107(3) 032004-032004, Feb 1, 2023 Peer-reviewed
Study of e+e- →ηφ via initial state radiation at Belle

W. J. Zhu, B. S. Gao, X. L. Wang, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, S. Bahinipati …

Physical Review D, 107(1), Jan 1, 2023 Peer-reviewed
Search for Z′ →μ+μ- in the Lμ-Lτ gauge-symmetric model at Belle

T. Czank, I. Jaegle, A. Ishikawa, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 106(1), Jul 1, 2022
First test of lepton flavor universality in the charmed baryon decays ωc0 → ω-ℓ+νℓ using data of the Belle experiment

Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 105(9), May 1, 2022
An improved search for the electric dipole moment of the τ lepton

K. Inami, K. Hayasaka, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu …

Journal of High Energy Physics, 2022(4), Apr, 2022
Search for B0 meson decays into Λ and missing energy with a hadronic tagging method at Belle

C. Hadjivasiliou, B. G. Fulsom, J. F. Strube, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, K. Belous …

Physical Review D, 105(5), Mar 1, 2022 Peer-reviewed
New Results from the Silicon Vertex Detector of the Belle II Experiment

Luigi Corona, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P.K. Behera …

Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021), Feb 24, 2022
Measurement of B(Bs→DsX) with Bs semileptonic tagging

B. Wang, K. Kinoshita, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera …

Physical Review D, 105(1) 012004-012004, Jan 11, 2022 Peer-reviewed
Measurements of the Branching Fractions of the Semileptonic Decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} and the Asymmetry Parameter of Ξ_{c}^{0}→Ξ^{-}π^{+}.

Y B Li, C P Shen, I Adachi, K Adamczyk, H Aihara, S Al Said, D M Asner, T Aushev, R Ayad, V Babu …

Physical review letters, 127(12) 121803-121803, Sep 17, 2021
Weak value amplification in high energy physics: A case study for precision measurement of CP violation in B meson decays

Satoshi Higashino, Yuichiro Mori, Yosuke Takubo, Takeo Higuchi, Akimasa Ishikawa, Izumi Tsutsui

Physical Review D, 104(3), Aug 9, 2021

Misc.

Inclusive study of bottomonium production in association with an η meson in e⁺e^- annihilations near Υ(5 S) : Belle Collaboration

U. Tamponi, E. Guido, R. Mussa, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev …

European Physical Journal C, 78(8), Aug 1, 2018
Search for B- →μ- ν μ Decays at the Belle Experiment

A. Sibidanov, K. E. Varvell, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees …

Physical Review Letters, 121(3), Jul 18, 2018
Evidence of charged $Ξ_{c}(2930)$ and updated measurement of $B^{0} \to K^{0} Λ_{c}^{+} \barΛ_{c}^{-}$ at Belle

Belle Collaboration, Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu …

Jun 25, 2018
Search for ϒ(1S,2S)→Zc+Zc(′)− and e+e−→Zc+Zc(′)− at s=10.52 , 10.58, and 10.867 GeV

S. Jia, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad …

Physical Review D, 97(11), Jun 14, 2018
Production cross sections of hyperons and charmed baryons from e+e- annihilation near s =10.52 GeV

M. Niiyama, M. Sumihama, T. Nakano, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad …

Physical Review D, 97(7), Apr, 2018
Study of KS0 pair production in single-tag two-photon collisions

M. Masuda, S. Uehara, Y. Watanabe, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko …

Physical Review D, 97(5), Mar 1, 2018
Measurement of branching fractions of hadronic decays of the Ω c 0 baryon

J. Yelton, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, T. Aziz …

Physical Review D, 97(3), Feb 1, 2018
Measurements of the absolute branching fractions of B ⁺ → X <inf>cc̄</inf> K ⁺ and B ⁺ → D̄ ^(*)0 π ⁺ at Belle

Y. Kato, T. Iijima, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu …

Physical Review D, 97(1), Jan 1, 2018
Measurement of the τ lepton polarization and R(D*) in the decay B¯→D*τ−ν¯τ with one-prong hadronic τ decays at Belle

S. Hirose, T. Iijima, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad …

Physical Review D, 97(1), Jan 1, 2018
Search for light tetraquark states in Upsilon(1S) and Upsilon(2S) decays

S. Jia, C. P. Shen, C. Z. Yuan, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev …

PHYSICAL REVIEW D, 96(11), Dec, 2017
Evidence for Isospin Violation and Measurement of CP Asymmetries in B -> K*(892)gamma

T. Horiguchi, A. Ishikawa, H. Yamamoto, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad …

PHYSICAL REVIEW LETTERS, 119(19), Nov, 2017
Search for B -> h nu(nu)over-bar decays with semileptonic tagging at Belle

J. Grygier, P. Goldenzweig, M. Heck, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, T. Aziz …

PHYSICAL REVIEW D, 96(9), Nov, 2017
Radiative and EW Penguin $B$ Decays at Belle

Akimasa Ishikawa

Oct 9, 2017
Measurement of the tau Michel parameters $\barη$ and $ξκ$ in the radiative leptonic decay $τ^- \rightarrow \ell^- ν_τ \barν_{\ell}γ$

The Belle Collaboration, N. Shimizu, H. Aihara, D. Epifanov, A. Abdesselam, I. Adachi, K. Adamczyk, S. Al Said, K. Arinstein, Y. Arita …

Sep 26, 2017
Search for Lambda(+)(c) -> phi p pi(0) and branching fraction measurement of Lambda(+)(c) -> K- pi(+) p pi(0)

B. Pal, A. J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich …

PHYSICAL REVIEW D, 96(5), Sep, 2017
Search for a massive invisible particle X (0) in B (+) -> e (+) X (0) and B (+) -> mu (+) X (0) decays

Chanseok Park

PHYSICS OF ATOMIC NUCLEI, 80(5) 983-986, Sep, 2017
Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e(+) e(-) annihilation at root s=10.58 GeV

R. Seidl, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal …

PHYSICAL REVIEW D, 96(3), Aug, 2017
Measurement of branching fraction and direct CP asymmetry in charmless B+ -> K+ K- pi(+) decays at Belle

C-L Hsu, D. Dossett, M. E. Sevior, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev …

PHYSICAL REVIEW D, 96(3), Aug, 2017
Study of $η$ and dipion transitions in $Υ(4S)$ decays to lower bottomonia

Belle Collaboration, E. Guido, R. Mussa, U. Tamponi, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev …

Phys. Rev. D 96, 052005 (2017), Jul 17, 2017
Search for $CP$ Violation and Measurement of the Branching Fraction in the Decay $D^{0} \to K^0_S K^0_S$

N. Dash, S. Bahinipati, V. Bhardwaj, K. Trabelsi, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev …

Phys. Rev. Lett. 119, 171801 (2017), May 17, 2017

Presentations

102

Search for new physics using rare B decays and B decays involving tau lepton

ISHIKAWA Akimasa

73th JPS meeting symposium "New Physics Exploited by Belle II experiment" ~B2TiP book completion and future prospect~", Mar 22, 2018 Invited
VTX

ISHIKAWA Akimasa

ILC physics and detector annual meeting, Mar 20, 2018 Invited
BF and Angular Analysis of b-->sl+l-processes at Belle II

ISHIKAWA Akimasa

b-->sll Workshop 2018, Feb 20, 2018 Invited
Search for new physics using B meson at Belle II experiment

ISHIKAWA Akimasa

Osaka Workshop 2017 "New physics which can be searched at ground experiment", Nov 12, 2017 Invited
Summary of Vertex/Tracking/Sim/Reco

ISHIKAWA Akimasa

Linear Collider Workshop 2017, Oct 23, 2017 Invited
Vertex Detectors for Elementary Particle Experiments

ISHIKAWA Akimasa

78th JSAP meeting, Sep 6, 2017 Invited
Activities for Vertex Detector Developments in Japan

ISHIKAWA Akimasa

Americas Workshop on Linear Colliders 2017, Jun 26, 2017
Radiative and EW Penguin B Decays at Belle

ISHIKAWA Akimasa

15th Conference on Flavor Physics and CP Violation, Jun 5, 2017 Invited
HyENEXSSを用いたSOI放射線検出器の電荷収集効率の研究

石川明正

TCADアカデミック委員会研究会, May 19, 2017
Measurements of b->sl+l- at Belle and Prospects at Belle II

ISHIKAWA Akimasa

Anomaries in b to sll and it's implications, May 11, 2017 Invited
FPCCD

ISHIKAWA Akimasa

LC Vertex Workshop 2017, Apr 30, 2017
電子陽電子衝突実験による暗黒物質探索

日本物理学会第72回年次大会, Mar 17, 2017
レプトンフレーバーに依存したB→K*l+l-崩壊の角度分布解析

日本物理学会第72回年次大会, Mar 17, 2017
P5’ Anomaly and Lepton Flavor Universality Violation in B→K*l+l-

Ｂファクトリー物理勉強会第１９回ミーティング, Dec 19, 2016
WG2 Experiment

B2TIP MIAPP workshop, Nov 15, 2016
Radiative and EW Penguin Decays at Belle and Belle II

Flavour Physics with High-Luminosity Experiments at MIAPP, Oct 24, 2016
VTX崩壊点検出器

ILC夏の合宿2016, Jul 23, 2016
Belle II における b→s g での光子偏極測定の展望

Ｂファクトリー物理勉強会第１８回ミーティング, Jul 11, 2016
Belle における B→K*l+l- full angular analysis での P5' anomaly

Ｂファクトリー物理勉強会第１８回ミーティング, Jul 11, 2016
Physics Prospects at Belle II

22nd International Symposium on Particles (PASCOS 2016), Jul 10, 2016