Precise measurement with the ATLAS detector and research on physics beyond the standard model

2009 Fiscal Year Final Research Report

• Project/Area Number: 16081210
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: IWASAKI Hiroyuki High Energy Accelerator Research Organization, 素粒子原子核研究所, 教授 (40151724)
• Co-Investigator(Kenkyū-buntansha): SASAKI Osamu 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (30178636) ; ARAI Yasuo 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (90167990) ; TERADA Susumu 高エネルギー加速器研究機構, 素粒子原子核研究所, 講師 (70172096) ; IKEGAMI Yoichi 高エネルギー加速器研究機構, 素粒子原子核研究所, 研究機関講師 (20222862) ; TOJO Junji 高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (70360592) ; TSUNO Soshi 高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (30451834)
• Co-Investigator(Renkei-kenkyūsha): JINNOUCHI Osamu 東京工業大学, 理工学研究科, 准教授 (50360566) ; NAKANO Itsuo 岡山大学, 理学部, 教授 (90133024) ; TAKASHIMA Ryuichi 京都教育大学, 教育学部, 准教授 (60163200) ; UKEGAWA Fumihiko 筑波大学, 数理物質科学研究科, 教授 (10312795) ; TOMOTO Makoto 名古屋大学, 理学研究科, 准教授 (80432235) ; HASEGAWA Yoji 信州大学, 理学部, 准教授 (70324225) ; NAGASAKA Yasushi 広島工業大学, 情報学部, 教授 (20299655) ; SHIMOJIMA Makoto 長崎総合科学大学, 情報学部, 教授 (80302347)
• Project Period (FY): 2004 – 2009
• Keywords: 素粒子実験 / 国際協力実験 / 標準理論 / ハドロンコライダー

Research Abstract

We constructed and have been successfully operating the semiconductor tracking detector in the barrel region and the muon trigger system in the forward region of the ATLAS detector, for which the Japanese group are responsible from the beginning of their designs. We also made substantial contribution to the data-taking system in collaboration with the ATLAS researchers. Start-up of the stable physics experiment was delayed due mainly to the LHC incident in 2008. It caused our research period to be extended by one year to 2010 Japanese fiscal year. But thanks to the excellent ATLAS collaboration, we have already got fruitful physics results. Examples are measurement of production cross sections for top-quark, W and Z bosons, and study of QCD jet shapes at 7 TeV center-of-mass energy.

Research Products

• [Journal Article] Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s=7 TeV, ATLAS Collaboration (2011)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Euro.Phys.Journal C 71 Pages: 1577
  • Peer Reviewed
• [Journal Article] Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector, ATLAS Collaboration (2011)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Euro.Phys.Journal C 71 Pages: 1512
  • Peer Reviewed
• [Journal Article] Measurement of the W-> lnu and Z/gamma* -> ll production cross sections in proton-proton collisions at √s=7 TeV with the ATLAS detector, ATLAS Collaboration (2010)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Journal of High Energy Physics 12 Pages: 060
  • Peer Reviewed
• [Journal Article] Search for New Particles in Two-Jet Final States in 7 TeV Proton-Proton Collisions with the ATLAS Detector at the LHC, ATLAS Collaboration (2010)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Phys.Rev.Lett. 105 Pages: 161801
  • Peer Reviewed
• [Journal Article] The ATLAS Inner Detector commissioning and calibration, ATLAS Collaboration (2010)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Euro.Phys.Journal C 70 Pages: 787
  • Peer Reviewed
• [Journal Article] Charged-particle multiplicities in pp interactions at sqrt(s)=900 GeV measured with the ATLAS detector at the LHC, ATLAS Collaboration (2010)
  • Author(s): G.Aad.Y.Arai, Y.Hasegawa, Y.Ikegami, H.Iwasaki, O.Jinnouchi, Y.Nagasaka, I.Nakano, O.Sasaki, M.Shimojima, R.Takashima, S.Terada, J.Tojo, M.Tomoto, S.Tsuno, F.Ukegawa, et al.
  • Journal Title: Phys.Lett.B 688 Pages: 21
  • Peer Reviewed
• [Journal Article] The ATLAS Level-1 Trigger : Status of the System and First Results from Cosmic-Ray Data (2007)
  • Author(s): G.Aielli, Y.Hasagawa, H.Iwasaki, O.Sasaki, et al.
  • Journal Title: Nucl.Instr.Meth.A 581 Pages: 476
  • Peer Reviewed
• [Journal Article] The barrel modules of the ATLAS semiconductor tracker (2006)
  • Author(s): A.Abdesselam, Y.Ikegami, I.Nakano, S.Terada, et al.
  • Journal Title: Nucl.Instr.Meth.A 568 Pages: 642
  • Peer Reviewed
• [Presentation] The ATLAS tau trigger (2009)
  • Author(s): S.Tsuno
  • Organizer: 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference, Orlando
  • Place of Presentation: Florida, USA
  • Year and Date: 20091025-20091031
• [Presentation] ATLAS Muon Spectrometer-Status and Performance (2009)
  • Author(s): Y.Takahashi
  • Organizer: 11th International Conference on Advanced Technology and Particle Physics, Villa Olmo
  • Place of Presentation: Como, Italy
  • Year and Date: 20091005-20091009
• [Presentation] Precise Timing Adjustment for ATLAS Level1 Endcap Muon Trigger System (2009)
  • Author(s): Y.Suzuki
  • Organizer: Topical Workshop on Electronics for Particle Physics (twepp-09)
  • Place of Presentation: Paris, France
  • Year and Date: 20090921-20090925
• [Presentation] Commissioning of the ATLAS detector with Cosmic-rays and Single-Beams (2009)
  • Author(s): M.Ishino
  • Organizer: Rencontres de Moriond, QCD and High Energy Interactions
  • Place of Presentation: La Thuile, Italy
  • Year and Date: 20090314-20090321
• [Presentation] Status of the ATLAS experiment (2009)
  • Author(s): M.Tomoto
  • Organizer: Joint session of Physicsl Society of Jaoan and Korean Physical Society (韓国物理学会日韓合同セッション)
  • Place of Presentation: Daejeon, Korea (大田、韓国)
  • Year and Date: 2009-04-23
• [Presentation] The first few fb-1 ; Potential for observing SUSY and Higgs (2008)
  • Author(s): S.Tsuno
  • Organizer: Rencontres de Moriond, Electroweak Session
  • Place of Presentation: La Thuile, Italy
  • Year and Date: 20080301-20080308
• [Presentation] Status of LHC and ATLAS (2007)
  • Author(s): H.Iwasaki
  • Organizer: Conference on Supersymmetry in 2010's
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 20070620-20070622
• [Presentation] Search for Long-lived Particles at ATLAS (2007)
  • Author(s): O.Jinnouchi
  • Organizer: Conference on Supersymmetry in 2010's
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 20070620-20070622
• [Remarks] ホームページ等
  • URL: http://www.icepp.s.u-tokyo.ac.jp/tokutei/
• [Remarks]
  • URL: http://atlas.kek.jp/
• [Remarks]
  • URL: http://atlas.kek.jp/research/index.html