Kazuhiko Hara - My portal

Profile Information

Affiliation: Associate Professor, Faculty of Pure and Applied Sciences, University of Tsukuba

J-GLOBAL ID: 200901078921367977
researchmap Member ID: 1000048739

Research Areas

Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /

Research History

Aug, 2011 - Present

Graduate School of Pure and Applied Sciences, University of Tsukuba
Apr, 2005 - Jul, 2011

Assistant Professor, Graduate School for Pure and Applied Sciences, University of Tsukuba
Apr, 1989 - Mar, 2005

Assistant Professor, Institute of Physics, University of Tsukuba
Mar, 1989 - Mar, 1994

Reasearch Associate, Insititute of Physics, University of Tsukuba
Apr, 1985 - Feb, 1989

Research Associate, Laboraotry for High Energy Physics, Bern Univeristy

Education

Committee Memberships

Apr, 2018 - Mar, 2023

TIA 光量子計測MG委員, TIA-Tsukuba Innovation Arena
Apr, 2012 - Mar, 2023

International Program Advisory Committee, International Workshop on VERTEX
Apr, 2012 - Mar, 2023

国際プログラム提言委員
Dec, 2019 - Dec, 2020

組織委員長, VERTEX2020 Local Organizing Committee
Mar, 2019 - Oct, 2019

IEEE NSS Topic Convener
May, 2017 - Sep, 2018

Local Committee Member
May, 2017 - Sep, 2018

Local Committee Member

Papers

1722

Measurements of azimuthal anisotropies of jet production in Pb collisions at root(NN)-N-s=5.02 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

PHYSICAL REVIEW C, 105(6), Jun, 2022 Peer-reviewed
Search for neutral long-lived particles in pp collisions at root s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

JOURNAL OF HIGH ENERGY PHYSICS, (6), Jun, 2022 Peer-reviewed
Characterization of BNL and HPK AC-LGAD sensors with a 120 GeV proton beam

Heller, R, Madrid, C, Apresyan, A, Brooks, W. K, Chen, W, D'Amen, G, Giacomini, G, Goya, I, Hara, K, Kita, S …

JOURNAL OF INSTRUMENTATION, 17(5), May, 2022 Peer-reviewed
Search for single production of a vectorlike T quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

PHYSICAL REVIEW D, 105(9), May, 2022 Peer-reviewed
Search for resonant pair production of Higgs bosons in the b(b)over-barb(b)over-bar final state using pp collisions at root s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Abramowicz, H, Abreu, H …

PHYSICAL REVIEW D, 105(9), May, 2022 Peer-reviewed
Determination of the parton distribution functions of the proton using diverse ATLAS data from pp collisions at root s=7, 8 and 13 TeV

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

EUROPEAN PHYSICAL JOURNAL C, 82(5), May, 2022 Peer-reviewed
Constraints on Higgs boson production with large transverse momentum using H -> b(b)over-bar decays in the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

PHYSICAL REVIEW D, 105(9), May, 2022 Peer-reviewed
Measurement of the energy asymmetry in t(t)over-barj production at 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H …

EUROPEAN PHYSICAL JOURNAL C, 82(4), Apr, 2022 Peer-reviewed
Search for flavour-changing neutral-current interactions of a top quark and a gluon in pp collisions at root s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Aboulhorma, A, Abramowicz, H, Abreu, H …

EUROPEAN PHYSICAL JOURNAL C, 82(4), Apr, 2022 Peer-reviewed
Measurement of the energy response of the ATLAS calorimeter to charged pions from W^{\pm }\rightarrow \tau ^{\pm }(\rightarrow \pi ^{\pm }\nu _{\tau })\nu _{\tau }W ± →τ ± (→π ± ν τ )ν τ events in Run 2 data

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Eur. Phys. J. C, 82(3) 223, Mar, 2022
Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb^{-1} −1 of pppp collision data at \sqrt{s}=13 s =13 TeV

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Journal of High Energy Physics, 3 041, Mar, 2022
The ATLAS inner detector trigger performance in pp collisions at 13 TeV during LHC Run 2

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Eur. Phys. J. C, 82(3) 206, Mar, 2022
Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 \text {TeV}TeV with the ATLAS detector

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Eur. Phys. J. C, 82(2) 105, Feb, 2022 Peer-reviewed
Search for new phenomena in three- or four-lepton events in pp collisions at root s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, AbouZeid, O. S, Abramowicz, H …

PHYSICS LETTERS B, 824, Jan, 2022 Peer-reviewed
Operation and performance of the ATLAS semiconductor tracker in LHC Run 2

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Journal of Instrumentation, 17(1) P01013, Jan, 2022
Measurement of the c-jet mistagging efficiency in t\bar{t}t t ˉ events using pp collision data at \sqrt{s}=13 s =13 \text {TeV}TeV collected with the ATLAS detector

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Eur. Phys. J. C, 82(1) 95, Jan, 2022 Peer-reviewed
Search for Higgs boson decays into a pair of pseudoscalar particles in the bb\mu\mubbμμ final state with the ATLAS detector in pppp collisions at \sqrt s s =13 TeV

Hara, K, Hirose, Shigeki, Sato, K, Ukegawa, F

Phys. Rev. D, 105(24700010) 012006, Jan, 2022 Peer-reviewed
Performance of the ATLAS Level-1 topological trigger in Run 2

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, AbouZeid, O. S, Abraham, N. L, Abramowicz, H …

EUROPEAN PHYSICAL JOURNAL C, 82(1), Jan, 2022 Peer-reviewed
Search for exotic decays of the Higgs boson into b(b)over-bar and missing transverse momentum in pp collisions at root s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Abramowicz, H, Abreu, H …

JOURNAL OF HIGH ENERGY PHYSICS, 2022(1), Jan, 2022 Peer-reviewed
Search for Lepton-Flavor Violation in Z-Boson Decays with tau Leptons with the ATLAS Detector

Aad, G, Abbott, B, Abbott, D. C, Abud, A. Abed, Abeling, K, Abhayasinghe, D. K, Abidi, S. H, Abramowicz, H, Abreu, H …

PHYSICAL REVIEW LETTERS, 127(27), Dec, 2021 Peer-reviewed

Books and Other Publications

宇宙史研究センター年次報告

原, 和彦 (Role: Contributor, 光量子開発部門)

Jul, 2020
物理学域年次報告

原,和彦 (Role: Contributor, 素粒子実験研究室)

Jun, 2020

Presentations

Improvement of timing resolution and radiation torelance for finely segmented AC-LGAD sensors

原, 和彦

TREDI2023
CDF IIにおけるWボソン質量の精密測定

原, 和彦

基研研究会「素粒子物理学の進展2022」, Aug 29, 2022 Invited
時間分解能にも優れた高位置分解能半導体飛跡検出器AC-LGADの開発

原, 和彦

TIA光・量子計測MG研究会, Sep 1, 2022 Invited
Contribution of interfacestate and bulk damages tothe dark current increase in SOI pixel sensor with pinned depleted diode structure

Hara, Kazuhiko

IEEE Nuclear Science Symposium and Medical Imaging Conerence, Oct 16, 2021
Development of finely segmented AC-LGAD sensorsby HPK for precise timing trackers

Hara, Kazuhiko

IEEE Nuclear Science Symposium and Medical Imaging Conerence, Oct 16, 2021
Application developments of silicon semiconductor detectors for high-energy experiments - a review -

原, 和彦

第3回量子線イメージング研究会, Sep 29, 2021 Invited
宙線ミュー粒子を用いた福島第一原子炉の透視」を振り返って

原, 和彦

宇宙史研究センター2021年度第１回構成員会議・成果報告＆交流会, Jun 25, 2021
A study of AC-LGAD structure for ner pitch readoutelectrodes

Hara, Kazuhiko

US-Japan Hawaii Symposium of the Science and Technology Cooperation Program, Apr 21, 2021
素粒子実験でのシリコン検出器

原, 和彦

筑波大学宇宙研究センター 2020 年度ワークショップ, Mar 31, 2021
ATLAS ITk ストリップ型シリコン検出器の初期量産

原, 和彦

宇宙史研究センター 2020 年度第2回構成員会議・成果報告＆交流会, Nov 30, 2020
Welcome to VERTEX2020

Hara,Kazuhiko

Vetrex2020 29th International Workshop on Vertex Detectors, Oct 5, 2020
SOFIST, an SOI based pixel sensor for the ILC

Hara,Kazuhiko

ILC seasonal detector meeting, Sep 9, 2020 Invited
SOI pixel development

Hara,Kazuhiko

ILC seasonal detector meeting, Sep 9, 2020, ILC Invited
4 次元飛跡検出器の開発

原,和彦

宇宙史研究センター 2020 年度第１回構成員会議・成果報告＆交流会, Jun 15, 2020
素粒子実験用SOFISTピクセルセンサーの３D積層

原, 和彦

第4回3次元積層半導体量子イメージセンサ研究会, Jan 27, 2020, TIA連携プログラム探索推進事業「かけはし」 Invited
Charge Collection of the ATLAS ITk Prototype Silicon Strip Sensors ATLAS17LS for the HL-LHC

Hara, Kazuhiko

12th Hiroshima Symposium (HSTD12), Dec 14, 2019
ミューオンラジオグラフィによる福島第一原発の燃料デブリの観測

原,和彦

SMART2019, Nov 18, 2019 Invited
SOFIST, an SOI based pixel sensor for the ILC

Hara, Kazuhiko

LCWS2019, Oct 28, 2019
Design of a Segmented LGAD Sensor for the Development of a 4-D Tracking Detector

Hara, Kazuhiko, Wada, Sayaka

Vertex2019, Oct 12, 2019
Poster Session Summary Talk

Hara,Kazuhiko

Vertex 2019, Oct 12, 2019

Professional Memberships

1980 - 1985

THE PHYSICAL SOCIETY OF JAPAN
THE PHYSICAL SOCIETY OF JAPAN

Research Projects

高時間分解能を実現する半導体検出器

科学研究費助成事業, Apr, 2021 - Mar, 2024

中村浩二
Realisation of 4D Semiconductor Tracker with Fine Spatial and Time Resolutions

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2023
3次元構造半導体量子イメージセンサーの調査研究

TIA, Jun, 2019 - Mar, 2020

倉知郁夫
Innovative design concepts in p bulk planar pixel sensors for ATLAS tracker construction

TYL-FJPPL, KEK-LAL, Jun, 2018 - Mar, 2019
3D Stacking Image Sensor

Jun, 2016 - Mar, 2019
ミューオンラジオグラフィーによる遠隔大規模構造体の透視

高エネルギー加速器研究機構, Sep, 2012

高崎史彦
Development of SOI monolithic pixel detectors

Apr, 2007
Proton-proton collider experiment(ATLAS)

Apr, 1998
Proton-Antiproton Collider Experiment (CDF)

Aug, 1989

Other

科学技術週間における...

May, 2018 - May, 2018

科学技術週間における「宇宙史センター光量子開発部門」のポスター展示
科学技術週間における「宇宙史センター光量子開発部門」のポスター展示

May, 2018 - May, 2018
科学技術週間における...

May, 2017 - May, 2017

科学技術週間における「素粒子物理学」のポスター展示
科学技術週間における「素粒子物理学」のポスター展示

May, 2017 - May, 2017