MEG Documents

Proposal and related

• Letter of Intent (May 1998)
• Addendum to the letter of intent (May 1999)
• Proposal to PSI (May 1999)
• Note on the possible use of Sindrum II as a muegamma experiment
• Pisa note on magnet (March 2000)
• Proposal to INFN [gzipped postscript] [pdf] (September 2002)
• Proposal for a MEG Upgrade
• Report on wire instability analysis (in Italian, May 2018)
• Final report on wire instability analysis (in Italian, June 2019)

Preprints

• Preprint on the MEG II first result (Oct 2023)
• Preprint on the MEG II detector (Oct 2023)
• Preprint on the design of the MEG II experiment (Jan 2018)
• Preprint on the final results of the MEG experiment (May 2016)
• Preprint on the analysis of 2009—2011 data (Mar 2013)
• Preprint on the analysis of 2009 & 2010 data (Jul 2011)
• Preprint on the analysis of first MEG data (Aug 2009)

Articles

• Published Paper on the MEG II first result (Feb 2024)
• Published Paper on the MEG II detector (Feb 2024)
• Published Paper on the design of the MEG II experiment (May 2018)
• Published Paper on the final results of the MEG experiment (Aug 2016)
• Published Paper on the analysis of 2009—2011 data (May 2013)
• Published Paper on the MEG detector (April 2013)
• Published Paper on the analysis of 2009 & 2010 data (October 2011)
• Published Paper on the analysis of first MEG data (April 2010)

Theses

• Doctoral theses
• Master's theses

Reports

• Progress reports
• PSI annual reports

Talks from JPS Meeting (in Japanese)

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• 2005 2004 2003 2002 2001
• 2000 1999

Seminar and Conference Talks

• F. Cei
  • "The MEG experiment at PSI: a sensitive search for mu -> e gamma decay"
    IFAE 2003, Lecce (Italy) 23-26 April 2003, PowerPoint.
  • "Lepton Flavour Violation: present and future experiments"
    HIF 2005, La Biodola (Isola d'Elba) (Italy) May 28 - June 1, 2005 (published on Nucl. Phys. B154 (2006) 62-79), PowerPoint.
  • "The Liquid Xenon Calorimeter of the MEG experiment"
    IFAE 2006, Pavia (Italy) 19-21 April 2003, PowerPoint.
  • "Present Status of the MEG Experiment"
    Neutrino 2006 Conference, Santa Fe' (New Mexico) 13-21 June 2006 (poster presentation), PowerPoint.
  • "The MEG Experiment at PSI"
    NOW 2008 Conference, Conca Specchiulla (LE) (Italy) 7-13 September 2008, PowerPoint.
  • "First results of the MEG Experiment at PSI"
    Seminar in Perugia 11 November 2009, PowerPoint.
  • "Lepton Flavour Violation Experiments in the LHC Era"
    Pascos 2010, Valencia (Spain) 19-23 July, 2010, published in 2010 J. Phys. Conf. Ser. 259, 012010 and available at http://dx.doi.org/10.1088/1742-6596/259/1/012010. Slides: PowerPoint and PDF.
• L. Galli
  • "An FPGA-based trigger for the MEG Experiment"
    2008 Nuclear Science Symposium, 19-25 October 2008 Dresden, Germany PowerPoint and PDF.
  • "An FPGA-based trigger for the MEG Experiment"
    2009 Nuclear Science Symposium, 24-31 October 2009 Orlando, USA Talk(PDF) and Proceeding(PDF).
• M. Grassi
  • "A sensitive search for the mu -> e gamma decay: the MEG experiment"
    Les Rencontres de Physique de la Vallee d'Aoste, La Thuile 9-15 March 2003, PowerPoint.
• T. Iwamoto
  • "The MEG Detector to Search for mu -> e gamma Decays" ICHEP'04, Aug. 2004, Beijing, China. PowerPoint and PDF.
  • "Liquid Xenon Scintillation Detector for the MEG Experiment" IEEE2004, Oct. 2004, Rome, Italy. PowerPoint and PDF.
  • "Liquid Xenon Detector for the MEG Experiment" IPRD06, Oct. 2006, Siena, Italy. PowerPoint.
  • "MEG Status and Prospects" KEKTC6, Feb. 2007. KEK, Tsukuba, Japan. PowerPoint.
• P.-R. Kettle
  • "Search for the Lepton-Flavour Violating Decay mu -> e gamma"
    Annual Meeting of the Swiss Physical Society SPS, 2nd-3rd May 2001, Duebendorf, Switzerland. html and PowerPoint.
  • "Search for the Lepton-Flavour Violating Decay mu -> e gamma"
    International workshop on Heavy Quarks and Leptons, May 27th - June 1st, 2002, Vietri sul Mare, Salerno, Italy, slides in PowerPoint and proceedings in Postscript.
  • "Overview of the MEG Experiment- Search for the Lepton-Flavour Violating Decay mu -> e gamma"
    ECFA Visit PSI, 16th May 2003, PSI Switzerland PowerPoint and PDF.
• T. Mashimo
  • "Search for μ⁺→e⁺γ down to 10^-14 branching ratio", VIII. International Oberjoch Meeting on Broken Symmetries and Meson-nuclear Physics, Sep. 2000, Oberjoch, Germany.
• S. Mihara
  • Neutrino Oscillations and their origin, Feb. 2000, Fuji Yoshida, slides html and proc Postscript.
  • IEEE2000, Oct. 2000, Lyon, slides in html and proceedings in PDF format.
  • NuFACT01, May 2001, Tsukuba, slides in html and PowerPoint.
  • Open Users Meeting BV33, Jan 2002, PSI, slides in html and PowerPoint.
  • Seminar, Kamioka Observatry, Jan 2003, Kamioka, Japan, PowerPoint
  • 9th Pisa meeting on advanced detectors, May 2003, Isola d'Elba, Italy, PowerPoint
  • Seminar at Zuerich University, Nov 2 2005, PowerPoint
  • CHIPP workshop on neutrino physics at Bern Univ., Oct 20 2006, PowerPoint
• T. Mori
  • "Rare Muon Decays and EDM (MEG-related slides)" XXIV INTERNATIONAL SYMPOSIUM ON LEPTON PHOTON INTERACTIONS AT HIGH ENERGIES, 17-22 August 2009 pdf.
• W. Ootani
  • The 3rd Workshop on "Neutrino Oscillations and their Origin"(NOON2001), Dec. 2001, Kashiwa, Japan, html, PowerPoint and PDF.
  • Symposium on Radiation Measurements and Applications 2002, May 21-23, 2002, USA, html, PowerPoint and PDF.
  • International Workshop on Nuclear and Particle Physics at 50-GeV PS, Sep 27-29, 2002, Kyoto, Japan, PowerPoint and PDF.
  • XXII International Symposium on Lepton and Photon Interactions at High Energies, Aug. 11-16, 2003, Batavia, Illinois, USA, PDF
  • 18th International Conference on Magnet Technology, Oct. 20-24, 2003, Morioka, Japan, PDF
  • Applications of Rare Gas Xenon to Science And Technology, 8-10 March, 2005, Tokyo, Japan, PDF
  • IEEE NSS/MIC 2006, Oct.29-Nov.4, 2006, San Diego, California, USA, PDF
  • Supersymmetry in 2010's, June 20-22, 2007, Sapporo, Japan, PDF
  • 3rd CHIPP Swiss neutrino workshop, Nov. 17-18, 2008, Zurich, Switzerland, PDF
• K. Ozone
  • "Liquid Xe detector for μ⁺→e⁺γ search",
    International Workshop on "Technique and Application of Xenon Detectors" (Xenon01), Dec. 2001, ICRR, Univ. of Tokyo, Kashiwa, Japan, slides in html, PDF and PowerPoint, proceedings in PDF.
  • "μ→eγ decay search with a liquid Xe scintillation detector",
    Symposium "LXe detectors and their new applications" in Japan Physics Society meeting, Mar. 2003, Univ. of Tohoku-Gakuin, Sendai, Japan, slides in PowerPoint and PDF.
• S. Ritt
  • NOON2000 Workshop, Dec. 2000, Tokyo, PowerPoint.
    Proceedings as MS Word document and PDF.
  • LTP Seminar, PSI, 20. Feb. 2002, PowerPoint.
  • INSTR02 Conference, March 2002, Novosibirsk, PowerPoint.
  • Seminar, JINR, 11. March 2002, Dubna, Russia, PowerPoint.
  • Seminar, TRIUMF, 9. May 2002, Vancouver, Canada, PowerPoint.
  • Seminar, DESY, 21. Jan 2003, Hamburg, Germany, PowerPoint.
  • Seminar, LAL, 17. Mar 2003, Orsay, France, PowerPoint.
  • IEEE/NSS Conference, Rome, Oct 2004, PowerPoint.
  • PHIPSI06 Conference, March 2006, Novosibirsk, PowerPoint.
  • IEEE RT07 Conference, May 2007, Batavia, Illinois, PowerPoint, Proceedings.
  • Seminar, Heidelberg, 26. June 2007, Heidelberg, Germany, PowerPoint
  • Seminar, Fermilab, 26. Feb. 2008, Batavia, Illinois, PowerPoint
• G. Signorelli
  • "The MUEGAMMA experiment at PSI, status and progress"
    NUFACT02, London 1-6 July 2002, PowerPoint.
  • "The liquid Xe scintillation calorimeter of the MEG experiment"
    CALOR2004, Perugia 28 March-2 Apr 2004 PowerPoint.
  • "Transparency of a 100l liquid xenon scintillation calorimeter prototype and measurement of its energy resolution for 55 MeV photons"
    IEEE/ICDL 2005, Coimbra, 26 June-2 July 2005 PDF.
  • "The MEG experiment at PSI"
    PANIC05, Particles and Nuclei International Conference, Santa Fe (NM) October 24-28, 2005 PDF.
  • "The LXe calorimeter of the MEG experiment, or a view from an anomalous acceleraor experiment"
    CryoDET, Wotkshop on Cryogenic Liquid Detectors for Future Particle Physics, Gran Sasso Laboratory, March 13-14, 2006 PDF.
  • "The MEG experiment at PSI: search for the mu to e gamma decay"
    New Trends in High Energy Physics, Yalta (Ukraine) September 16-23, 2006. PDF.
  • "Status of MEG: an experiment to search for the mu to e gamma decay"
    Invited talk at the Symposium on Muon Physics during the Workshop "Low Energy Precision Electroweak Physics in the LHC Era", INT-UW Seattle, 27-30 Oct. 2008 PDF (low resolution; ask Giovanni for full resolution or keynote file).
  • "The MEG experiment at PSI: status and prospects"
    PANIC2008, Eilat (Israel) November 11-16 2008. PDF.
  • "Status of MEG: an experiment to search for the mu -> e gamma decay at PSI "
    Invited talk at the Reunions pleniere du GDR neutrino - session 2009, Paris (France) 28-29 April 2009 PDF.
  • "The mu->e gamma decay as a sensitive probe of physics beyond the SM: first results from MEG. "
    Invited seminar at the Universite Catholique de Louvain, Louvain-la-Neuve, Belgique, 3 December 2009 PDF.
  • "Search of Lepton Flavour Violation with the mu -> e gamma decay: first results from the MEG experiment. "
    BEYOND2010, Cape Town (South Africa) February 1-6 2010 PDF.
  • "Recent results from the MEG experiment. "
    Invited seminar at LPNHE, Universite Pierre et Marie Curie, Paris, France, 10 March 2011 PDF.
  • "Recent and future MEG results (and LFV implications) in the SuperB era. "
    Invited seminar at the XVII SuperB Workshop and Kick-off meeting, La Biodola, Italy, June 2011 PDF.
  • "Experimental cLFV search and last results of the MEG experiment. "
    Invited talk at the BLV2011 workshop, Gatlinburg, Tennessee (USA) September 20-24 2011 PDF.
  • "Charged Lepton Flavor Violation Experiments "
    Invited talk at the FPCP conference, Buzios, Rio de Janeiro (Brazil) May 19-24 2013 PDF.
• S. Yamada
  • "Decay Angular Measurement in the MEG Experiment", SUSY2004, Jun. 2004, Tsukuba, Japan, PowerPoint.
  • "Search for the Lepton Flavor Violating Decay μ→eγ in the MEG Experiment", The 8th International Workshop on Tau-Lepton Physics, Tau04, 14-17 Sep. 2004, Nara, Japan, PowerPoint.
• J. Yashima
  • "μ→eγ experimet at PSI", New Initiatives in Lepton Flavor Violation and Neutrino Oscillations with Very Intense Muon and Neutrino Sources, Oct. 2000, Hawaii.
    slides in Postscript.

Talks from Review Meetings

• July 15th/16th, 2002
  • T. Mori, "Goals of the experiment" [PDF]
  • A. Baldini, "Status in Italy" [PowerPoint, PDF]
  • P. Kettle, "Beam line" [PowerPoint, PDF]
  • W. Ootani, "COBRA magnet" [PowerPoint, PDF]
  • J. Egger, "Drift chambers" [PowerPoint, PDF]
  • A. Baldini, "Timing counters" [PowerPoint, PDF]
  • S. Mihara, "Photon detector" [PowerPoint, PDF]
  • T. Haruyama, "Photon detector cryogenics" [PowerPoint, PDF]
  • G. Signorelli, "Simulation of the final photon detector" [PowerPoint, PDF]
  • M. Grassi, "Trigger" [PowerPoint, PDF]
  • S. Ritt, "Slow control and DAQ" [PowerPoint, PDF]
  • T. Mori, "Summary talk" [PDF]


• Feb. 3rd, 2003
  • P.-R. Kettle, "Beam tests" [PowerPoint, PDF]
  • S. Mihara, "LXe part A" [PowerPoint, PDF]
  • G. Signorelli, "LXe part B" [PowerPoint, PDF]
  • W. Ootani, "COBRA magnet" [PowerPoint, PDF]
  • M. Hildebrandt, "Drift chamber" [PowerPoint, PDF]
  • G. Cecchet, "Timing counter" [PowerPoint, PDF]
  • M. Grassi, "Trigger" [PowerPoint, PDF]
  • S. Ritt, "Computing" [PowerPoint, PDF]
  • S. Ritt, "Schedule" [PowerPoint, PDF]


• July 11th, 2003
  • A. Baldini, Summary of the experiment status, financing and schedule
  • S. Mihara, Liquid Xenon Detector and related topics
  • W. Ootani, COBRA Magnet Status
  • J. Egger, Drift Chambers and Pattern Recognition
  • G. Cecchet, Timing Counters
  • P.R. Kettle, Beam Line and Area Layout
  • S. Ritt, Electronics
  • S. Yamada, Software Coordination


• Feb. 11th, 2004
  • T. Mori, Summary Talk and Schedule Summary
  • S. Mihara, Liquid Xenon Detector Part I
  • A. Baldini, CEX Data Analysis and related
  • P.R. Kettle, Beam Line Studies
  • W. Ootani, COBRA Magnet Status
  • J. Egger, Drift chambers
  • F. Gatti, Timing Counter Status
  • M Grassi, Status of the electronics systems
  • S. Yamada, Software Status


• July 1st, 2004
  • A. Baldini, Introduction
  • F. Cei, Neutron Background Measurements
  • S. Mihara, Xenon Detector Status
  • J. Egger, Drift Chamber
  • F. Gatti, Timing Counter Status
  • P.R. Kettle, Beam Line Status
  • W. Ootani, COBRA Magnet Status
  • S. Ritt, Status of the electronics systems
  • S. Yamada, Software Status
  • C. Gatoo, Offline Software
  • S. Ritt, Schedules


• Feb. 9th, 2005
  • T. Mori, Introduction
  • A. Baldini, LXe Calibration, PMT Tests, Cryostat Construction
  • S. Mihara, LXe beam Test Results
  • P.R. Kettle, Beam Line Status
  • W. Ootani, COBRA Magnet Status
  • J. Egger, Drift Chamber
  • F. Gatti, Timing Counter Status
  • S. Ritt, Status of the Electronics Systems
  • C. Gatto, Software Status
  • S. Ritt, Schedules


• July 19th, 2005
  • A. Baldini, Introduction
  • P.R. Kettle, Beam Line Status
  • W. Ootani, COBRA Magnet Status
  • S. Mihara, LXe detector status report
  • C. Bemporad, LXe calorimeter calibration
  • J. Egger, Drift Chamber
  • F. Gatti, Timing Counter Status
  • M. Grassi, Status of the Electronics Systems
  • F. Cei, Software Status
  • S. Ritt, Schedules
  • A. Baldini et al., Technical Note #27


• Feb. 15th, 2006
  • P.R. Kettle, Beam Line Status
  • W. Ootani, COBRA Magnet Status
  • G. Signorelli, LXe calorimeter calibration
  • S. Mihara, LXe detector status report
  • J. Egger, Drift Chamber
  • F. Gatti, Timing Counter Status
  • M. Grassi, Status of the Electronics Systems
  • S. Yamada, Software Status
  • T. Mori, Open user's meeting summary talk


• June 27th, 2006
  • P.R. Kettle, Beam Line Status
  • W. Ootani, COBRA Magnet Status
  • C. Bemporad, LXe calorimeter calibration
  • S. Mihara, LXe detector status report
  • J. Egger, Drift Chamber
  • P. Cattaneo, Timing Counter Status
  • M. Grassi, Status of the Electronics Systems
  • S. Yamada, Software Status
  • A. Baldini, Summary talk


• Feb. 14th, 2007
  • T. Mori, Short Summary
  • M. Hildebrandt, Run2006 summary
  • P.R. Kettle, Beamline Status
  • P.R. Kettle, Cockcroft-Walton Status
  • W. Ootani, COBRA Magnet Status
  • S. Mihara, LXe detector status report
  • J. Egger, Drift Chamber
  • M. Schneebeli, Drift Chamber Analysis
  • P. Cattaneo, Timing Counter Status
  • P. Cattaneo, TC Results from Frascati beam time
  • P. Cattaneo, TC Results from PSI beam time
  • S. Ritt, Status of the Electronics Systems
  • F. Cei, Software Status
  • A. Baldini, Summary talk


• July 18th, 2007
  • A. Baldini, Summary Talk
  • W. Ootani, COBRA Status
  • S. Mihara, LXe detector status
  • G. Signorelli, Cockroft-Walton accelerator
  • F. Gatti, Timing Counter Status
  • J. Egger, Drift Chamber Status
  • M. Grassi, Electronics and DAQ
  • R. Sawada, Analysis and Software Status


• Feb. 20th, 2008
  • T. Mori, Summary Talk
  • P.-R. Kettle, MEG commissioning run 2007
  • S. Mihara, Liquid Xenon Calorimeter status
  • G. Signorelli, Calibrations with CW-accelerator
  • M. Hildebrandt, Drift Chamber hardware status
  • F. Gatti, Timing Counter status
  • D. Nicolo, Trigger review
  • S. Ritt, Data Acquisition status
  • T. Mori, Drift Chamber analysis


• Feb. 18th, 2009
  • P.-R. Kettle, Run 2008 Summary
  • D. Nicolo, Trigger and DAQ Operation
  • G. Gavoto, Timing Counter Status and Analysis
  • S. Mihara, Liquid Xenon Calorimeter Status
  • G. Signorelli, Liquid Xenon Calorimeter Analysis
  • M. Hildebrandt, Drift Chamber Status
  • W. Molzon, Drift Chamber Analysis
  • W. Ootani, Physics Aalysis
  • T. Mori, Summary and Prospects


• Feb. 17th, 2010
  • A. Baldini, Summary Talk
  • P.-R. Kettle, Run Summary 2009
  • D. Nicolo, Trigger Status
  • S. Ritt, Data Acquisition Status
  • A. Papa, Detector Calibrations
  • M. Hildebrandt, Drift Chamber Hardware Status
  • W. Molzon, DC Analysis Status
  • S. Mihara, Liquid Xenon Calorimeter Status
  • R. Sawada, Liquid Xenon Calorimeter Analysis
  • F. Gatti, Timing Counter Status
  • C. Voena, Timing Counter Analysis
  • F. Cei, MEG Physics Analysis Status