Research Associate | University of Washington,Seattle | Jul'70 - Jun'71 |
Visiting Asst Prof | University of British Columbia | Jul'71 - Jun'73 |
Assistant Professor | University of British Columbia | Jul'73 - Jun'79 |
Associate Professor | University of British Columbia | Jul'79 - Jun'85 |
Professor | University of British Columbia | Jul'85 - Present |
UBC Killam Faculty Research Fellow (87)
NSERC Exchange Fellow - Germany(87,95), Switzerland(87,90)
Visiting Professor -- University of Tokyo(95), Technische University Muenchen(95)
JSPS Exchange Scientist - University of Tokyo/KEK(96)
Visiting Professor -- Science University of Tokyo (97)
Centre of Excellence Fellow--National Laboratory for High Energy Physics(KEK)-Japan(00)
Visiting Professor CERN/Darmstadt(01)
CERN Scientific Associate(02)
Visiting Professor CERN(03)
Visiting Professor--KEK/J-PARC, Japan(07)
Chair-- Division of Nuclear Physics (CAP)2003-2005
CAP Physics Liaison Committee SAP representative 1998-2001
Institute of Particle Physics -- Board of Trustees 1997-2000
Undergraduate Chair, Dept of Physics & Astronomy, 2007-2015
My research interests are currently directed towards a search for non-Standard Model physics ( possible SUSY ) in precision studies of kaon decay at the National Laboratory for High Energy Physics (KEK) in Japan.
This off-site Kaon physics work currently involves two different Kaon decay experiments -- a precise measurement of the branching ratio of
K --> electron + electron_neutrino / K --> muon + muon_neutrino ( E36 ) and a study of CP- or T-Violation in K+ decay ( E06 ) at the new high-intensity hadron facility, J-PARC in Tokai, Japan. The latter is an improved higher sensitivity measurement of T-Violation in Kaon Decay that we performed as KEK (E246).
TREK is an international collaboration involving about 25 physicists from Canada, Japan, Russia, and the USA. For the Canadian contribution to these experiments we have constructed and tested a 256-element scintillating fibre target at TRIUMF.
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“CAST constraints on the axion-electron coupling”, K. Barth et al., JCAP05 (2013) 010.
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“CAST solar axion search with 3He buffer gas: Closing the hot dark matter gap”, M. Arik et al., Phys. Rev. Lett. 112, 091302 (2014).
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"Development of a Muon Polarimeter for the T-Violation Search at J-PARC", POS TIPP2014 (2014) 010.
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“A Search for Two Body Muon Decay Signals”, Ryan Bayes et al., Phys. Rev. D91 (2015) 052020.
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“Performance Test of a Lead-Glass Counter for the J-PARC E36 Experiment”, Y. Miyazaki et al., Nucl. Inst. & Methods A779 (2015) 13-17.
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“Search for chameleons with CAST”, V. Anastassopoulos et al., Phys. Lett. B749 (2015) 172-180, arXiv:1503.04561 [astro-ph,SR].
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"Assembly and bench testing of a spiral fiber tracker for the J-PARC TREK/E36 experiment", JPS Conf Proc 8 (2015) 024001.
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"The design and basic performance of a Spiral Fiber Tracker for the J-PARC E36 experiment". JINST. physics.ins-det(arXiv:1607): 1-11.
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"TREK @ J-PARC: Beyond the Standard Model with Stopped Positive Kaons. arXiv:1604.02141 hep-ph.
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"TREK/E36 @ J-PARC: Investigating Lepton Universality with stopped kaon decays". ECT* Workshop, Trento, Italy, June 2016. http://www.ectstar.eu/sites/www.ectstar.eu/files/talks/Talk_TREK_MichaelKohl_Trento_PRP2016.p
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"Precise measurement of the Ke2/Kmu2 branching ratio and search for new physics beyond the Standard Model." arXiv:1611.02719 nucl-ex.
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"A spiral fiber tracker for the J-PARC E36 Experiment", POS PhotoDetector 2015 (2016) 069.
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"New CAST limit on the axion–photon interaction", Nature Physics 13 584-590 (2017), doi:10138/nphys4109
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"Search for New Physics via a Precision Measurement of the Ke2/Kmu2 branching ratio at J-PARC", https://indico.in2p3.fr/event/13430/#2016-08-04.
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"Status of the TREK/E36 Experiment at J-PARC", https://indico.psi.ch/contributionDisplay.py?contribId=155&sessionId=20&confId=3914