Takeshi K. Komatsubara
- an experimental particle physicist

• KOTO Collaboration, Phys. Rev. Lett. 126, 121801 - Published 24 March 2021:
  Study of the KL->pi0nunu decay at the J-PARC KOTO experiment

• Y. Sugiyama et al., Nucl. Instum. Methods A 987 (2021) 164825 - Avaiable online 4 November 2020:
  Pulse shape discrimination of photons and neutrons in the energy range of 0.1-2GeV with the KOTO un-doped CsI calorimeter
  
  
• KOTO Collaboration, Phys. Rev. D 102, 051103(R) - Published 28 September 2020:
  First Search for the KL->pi0gamma Decay
  
  
• K. Sato et al., Nucl. Instum. Methods A 982 (2020) 164527 - Avaiable online 14 August 2020:
  CsI Calorimeter for the J-PARC KOTO Experiment
  
  
• R. Murayama et al., Nucl. Instum. Methods A 953 (2020) 163255 - Avaiable online 10 December 2019:
  A new cyrindrical photon-veto detector for KL->pi0nunu Experiment

• KOTO Collaboration, Phys. Rev. Lett. 122, 021802 - Published 15 January 2019:
  Search for KL->pi0nunun and KL->pi0X0 decays at the J-PARC KOTO Experiment

• arXiv:1906.02357:
  Write-ups for workshop on the project for the hadron experimental facility of J-PARC, Partial collection of LOIs at the extended hadron hall and the related topics

• arXiv:1706.07916:
  Extension of the J-PARC Hadron Experimental Facility - summary report -

Since October 2013,
as Deputy Head of J-PARC Particle and Nuclear Physics Division,
my first priority is to restore, restructure and safely-operate the Hadron Experimental Facility.

• 高エネルギーニュース　Vol34 No1, 2015/4,5,6:
  ハドロン実験施設における事故と利用運転再開までの経緯
  
  
  • Radioactive Material Leak Incident at the Hadron Experimental Facility of J-PARC by M. Baba
    
    
  • Investigation on Radionuclides Released in the Radioactive Material Leak Incident at the J-PARC Hadron Experimental Facility by M. Hagiwara et al.

"Catch a Shooting Star !" Experiments: Search for Rare Kaon Decays

Kaon program at KEK/J-PARC: E14 KOTO: Measurement of KL -> pi0 nu nubar decay at the J-PARC (2003-)

Neutral-kaon decay experiments at KEK-12GeV PS: E391a (2003-2011) : Search for CP violating decay KL -> pi0 nu nubar E391a Collaboration, Phys. Rev. D 81, 072004 (2010) (23 pages) and references therein. E137 (1987-1992) : KL -> mu e, mu mu and e e E137 Collaboration, Phys. Rev. D 51, 2061-2089 (1995) and references therein.

Charged-kaon decay experiments at BNL-AGS: E949 (1998-2009) : Measurement of the branching ratio B(K+ -> pi+ nu nubar), E787 (1992-2010) : Flavor changing neutral current K+ -> pi+ nu nubar E949 Collaboration, Phys. Rev. D 79, 092004 (2009) (27 pages); S. Adler et al., Phys. Rev. D 77, 052003 (2008) (40 pages); and references therein.

• Restoring and restructuring of the Hadron Experimental Facility and outlook,
  Symposium on Safety in Accelerator Facilities 2015,
  Tokai, Japan, March 06, 2015

• J-PARC KOTO Collaboration, Prog. Theor. Exp. Phys. (2017) 021C01 :
  A new search for the KL->pi0nunubar and KL->pi0X0 decays

• E949 Collaboration, Phys. Rev. D 94, 032012 (2016) (6 pages):
  Search for the rare decay K+ -> mu+ nu nubar nu

• T. Masuda et al., Prog. Theor. Exp. Phys. (2016) 013C03 :
  Long-Lived Neutral-Kaon Flux Measurement for the KOTO Experiment

• T. Matsumura et al., Nucl. Instrum. Methods Phys. Res. A 795 (2015) 19-31:
  Photon-Veto Counters at the Outer Edge of the Endcap Calorimeter for the KOTO Experiment

• E949 Collaboration, Phys. Rev. D 91, 052001 (2015) (13 pages):
  Search for heavy neutrinos in K+ -> pi+ nu_H deccays

• T. Masuda et al., Nucl. Instrum. Methods Phys. Res. A 746 (2014) 11-19:
  A vacuum tolerant high voltage system with a low noise and low power Cockcroft–Walton photomultiplier base

• K. Shiomi et al., Nucl. Instrum. Methods Phys. Res. A 664 (2012) 264-271:
  Measurement of K0L flux at the J-PARC neutral-kaon beam line

• 野村 - 小松原、 高エネルギーニュース　Vol35 No3, 2016/10,11,12:
  J-PARC KOTO実験：最初の物理ラン結果と現状

• 渡辺 - Lim - 野村 - 小松原、 高エネルギーニュース　Vol28 No4, 2010/1,2,3:
  KL -> pi0 nu nubar 実験（KOTO実験）用ビームラインの建設

• Experiments with K-Meson Decays,
  arXiv:1203.6437, Progress in Particle and Nuclear Physics 67 (2012) 995-1018.
  

• T. K. Komatsubara, arXiv:1006.4269:
  Kaons - Recent Results and Future Plans,
  in the Proceedings of LEPTON PHOTON 2009, Hamburg, Germany, August 17-22, 2009.

• G. Buchara et al, Eur. Phys. J. C (2008) 57: 309-492:
  Review: B, D and K decays,
  in "Flavor in the Era of the LHC", Reports of the CERN Workshop, November 2005-March 2007

• 2009 Kaon International Conference, KEK, Tsukuba, June 09-12, 2009

• 1st International Conference on Technology and Instrumentation in Particle Physics (TIPP09), March 12-17, 2009.

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!! Proceedings !!

• Proceedings of 1st International Conference on Technology and Instrumentation in Particle Physics,
  Tsukuba, Japan, 12-17 March 2009,
  Edited by Hiroyuki Iwasaki, Takeshi K. Komatsubara and Yasuhiro Sugimoto,
  Nuclear Instruments and Methods in Physics Research Section A, Volume 623, Issue 1, Pages 1-646 (1 November 2010).

• Proceedings of the 5th KEK Topical COnference - Frontiers in Flavor Physics -,
  KEK, Tsukuba, Japan, 20-22 November 2001,
  Edited by Shoji Hashimoto and Takeshi K. Komatsubara,
  Nuclear Physics B - Proceedings Supplements, Volume 111, Issues 1-3, Pages 3-324 (November 2002)

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List of Talks/Articles/Reviews/Publications in the past

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updated on 2021-March-25(Thu)