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Search for Non-Standard Model PhysicsUsing the Transverse Muon Polarization         in Stopped K+ Decay                   ...
The TREK Program at J-PARCOutline TREK Program TREK = Time Reversal Experiment with Kaons    Search for Time Reversal Sy...
Stopped K+ Experiments @ K1.1BRP36 (LFU) “Measurement of RK = (K+ →e+) / (K+ →m) and search for heavy sterile neutrin...
Stopped K+ Experiments @ K1.1BRP36 (LFU) “Measurement of RK = (K+ →e+) / (K+ →m) and search for heavy sterile neutrin...
Transverse m+ Polarization in the Km3 DecayK+→mdecay   PT is T-odd, and spurious effects from final state interactio...
Expected Sensitivity            We are aiming for a sensitivity of PT ~ 10-4     PTstat ~ 0.05 PTstat (E246) ~ 10-4 : ...
New Physics: Model Predictions for PT          Model                      K+  0m+                       K+  m+■   S...
J-PARC Facility                                                     (KEK/JAEA)                                            ...
J-PARC Facility                        Linac                                  (KEK/JAEA)                                  ...
J-PARC Facility                         Linac                                  (KEK/JAEA)                                 ...
J-PARC Facility                         Linac                                  (KEK/JAEA)                                 ...
J-PARC Hadron Hall                                                                      Beam                              ...
K1.1BR = K0.8 Beam Line InstallationProton beam              S. Bianchin   PANIC 2011 (July 24th – 29th 2011)   9
K1.1BR = K0.8 Beam Line Installation K1.1BR completed in summer 2010 using the supplementary budget of FY09 Commissioned...
The TREK Experimental Apparatus   K+→m               Use an upgraded E246 detector                            Active ...
The Stopped Beam Method K+→m                         Side view of the TREK setup  Experimental method                 ...
The Stopped Beam Method K+→m                         Electromagnetic calorimeter0 detection                          ...
The Stopped Beam Method K+→m                       Tracking systemCharged particle tracking                       bwd ...
The Stopped Beam Method K+→m                                  e+                        Active muon polarimeterm+ pola...
The Stopped Beam Method K+→mDouble ratio experimentAT = (Afwd - Abwd ) / 2                     Ncw - NccwAfwd(bwd)   =...
The Stopped Beam Method K+→m Double ratio experiment AT = (Afwd - Abwd ) / 2                      Ncw - Nccw Afwd(bwd)...
TREK/E06 Tracking Upgrade                                                           GEM technology --                     ...
The C0 Cylindrical GEM for TREK                                   300 mm160 mm         140 mm         • Vertex tracking ne...
R&D(1) – APD Readout for CsI(Tl)                                      • Improve the timing characteristics of             ...
R&D(2) – Active Muon Polarimeter                             Top View                                          e+μ+       ...
R&D(3) – Active Scintillating Fiber Target                      Light Guide:                      Kuraray Y11 WLS Fibre (1...
Upgrade Timeline Target:        Finer segmentation of TGT scintillating fibres         Readout: MPPC (SiPMT) Hamamatsu ...
Summary TREK at J-PARC is gaining momentum “K1.1BR” secondary beamline has been commissioned Measurement of the T-viola...
The TREK Collaboration                                                                     http://trek.kek.jpCANADA       ...
The TREK Collaboration                                                                     http://trek.kek.jpCANADA       ...
Thank YouS. Bianchin      PANIC 2011 (July 24th – 29th 2011)   20
J-PARC March11 Earthquake Damage   S. Bianchin   PANIC 2011 (July 24th – 29th 2011)
S. Bianchin   PANIC 2011 (July 24th – 29th 2011)
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Transcript of "PANIC2011_Final"

  1. 1. Search for Non-Standard Model PhysicsUsing the Transverse Muon Polarization in Stopped K+ Decay The E06 TREK Experiment Sébastien Bianchin TRIUMF / University of British Columbia on behalf of the TREK-E06 Collaboration PANIC 2011 (July 24th – 29th, 2001) Massachusetts Institute of Technology, MA, USA Thursday, July 28th 2011 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 1
  2. 2. The TREK Program at J-PARCOutline TREK Program TREK = Time Reversal Experiment with Kaons  Search for Time Reversal Symmetry Violation  Test of Lepton Universality  Search for Heavy Neutrinos Lower intensity Hadron Facility at J-PARC TREK Apparatus – R&D Status & Schedule S. Bianchin PANIC 2011 (July 24th – 29th 2011) 2
  3. 3. Stopped K+ Experiments @ K1.1BRP36 (LFU) “Measurement of RK = (K+ →e+) / (K+ →m) and search for heavy sterile neutrinos” Stage-1 (PAC11-Jan’11); 30 kW (~2013) (S. Shimizu, Parallel 5C – Meson Decays, July 28th @ 4pm)E06 (TREK) “Measurement of T-violating transverse muon polarization (PT) in K+→0mdecay” Stage-1, 270 kW (~2014) S. Bianchin PANIC 2011 (July 24th – 29th 2011) 3
  4. 4. Stopped K+ Experiments @ K1.1BRP36 (LFU) “Measurement of RK = (K+ →e+) / (K+ →m) and search for heavy sterile neutrinos” Stage-1 (PAC11-Jan’11); 30 kW (~2013) (S. Shimizu, Parallel 5C – Meson Decays, July 28th @ 4pm)E06 (TREK) “Measurement of T-violating transverse muon polarization (PT) in K+→0mdecay” Stage-1, 270 kW (~2014) S. Bianchin PANIC 2011 (July 24th – 29th 2011) 3
  5. 5. Transverse m+ Polarization in the Km3 DecayK+→mdecay PT is T-odd, and spurious effects from final state interaction are small: PT (FSI) < 10-5 Non-zero PT is a signature of T violation- Standard Model (SM) contribution to PT : PT (SM) < 10-7 PT in the range 10-3 – 10-5 is a sensitive probe of CP violation beyond the SM.There are theoretical models of new physics which allow a sizable PT value without conflicting with otherexperimental constraints. The TREK experiment aims for a sensitivity of 10-4 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 4
  6. 6. Expected Sensitivity We are aiming for a sensitivity of PT ~ 10-4 PTstat ~ 0.05 PTstat (E246) ~ 10-4 : 1.4 x 107 sec runtime 1) Beam intensity x 30 2) Detector acceptance x 10 3) Larger analyzing powerPTsyst ~ 0.1 PTsyst (E246) ~ 10-41) Precise calibration of misalignments2) Correction of systematic effects3) Precise fwd-bwd cancellation S. Bianchin PANIC 2011 (July 24th – 29th 2011) 5
  7. 7. New Physics: Model Predictions for PT Model K+  0m+ K+  m+■ Standard Model < 10-7 < 10-7■ Final State Interactions < 10-5 < 10-3Multi-Higgs ≤ 10-3 ≤ 10-3 PT (K+  0m+) ≈ + 3 PT (K+  m+)SUSY with squark mixing ≤ 10-3 ≤ 10-3 PT (K+  0m+) ≈ − 3 PT (K+  m+)SUSY with R-parity breaking ≤ 4 x10-4 ≤ 3 x10-4Leptoquark model ≤ 10-2 ≤ 5 x10-3■ Left-Right symmetric model 0 < 7x10-3 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 6
  8. 8. J-PARC Facility (KEK/JAEA) NorthS. Bianchin PANIC 2011 (July 24th – 29th 2011)
  9. 9. J-PARC Facility Linac (KEK/JAEA) North 3 GeV SynchrotronCY2007 Beams S. Bianchin PANIC 2011 (July 24th – 29th 2011)
  10. 10. J-PARC Facility Linac (KEK/JAEA) North 3 GeV Synchrotron Materials and Life Experimental Facility CY2007 Beams Hadron Exp.JFY2008 Beams Facility S. Bianchin PANIC 2011 (July 24th – 29th 2011)
  11. 11. J-PARC Facility Linac (KEK/JAEA) North 3 GeV SynchrotronNeutrino Beams(to Kamioka) Materials and Life Experimental Facility CY2007 Beams Hadron Exp. JFY2008 Beams Facility JFY2009 Beams S. Bianchin PANIC 2011 (July 24th – 29th 2011)
  12. 12. J-PARC Hadron Hall Beam Dump K1.8 KL K1.8BR K1.1 S-type 30~50 GeV Productionprimary beam K1.1BR target (T1) C-type S. Bianchin PANIC 2011 (July 24th – 29th 2011) 8
  13. 13. K1.1BR = K0.8 Beam Line InstallationProton beam S. Bianchin PANIC 2011 (July 24th – 29th 2011) 9
  14. 14. K1.1BR = K0.8 Beam Line Installation K1.1BR completed in summer 2010 using the supplementary budget of FY09 Commissioned in Oct. 2010 by the TREK collaboration - ESS Length of 2.0m to be increased to 2.5m - Length Q8-FF of 3.3m to be reduced to 1.5m (remove iron shielding wall) Q1, Q2 D2 T1 D1 Q3, Q4 IFX,Proton beam IFY SX1 ESS Q5, Q6 SX2 K1.1-BR SX1 MS D3 HFOC Q7 Q8 • FF S. Bianchin PANIC 2011 (July 24th – 29th 2011)
  15. 15. The TREK Experimental Apparatus K+→m Use an upgraded E246 detector Active Polarimeter ( Japan ) New Fibre Target ( Canada ) C0,C1 GEM ( USA ) CsI(Tl) readout ( Russia )PT is measured as the azimuthal asymmetry Ae+ of the m+ decay positrons S. Bianchin PANIC 2011 (July 24th – 29th 2011) 10
  16. 16. The Stopped Beam Method K+→m Side view of the TREK setup Experimental method bwd -  fwd - 0 (2) detection EM Calorimeter Decay Planem+ tracking Target + 5 Chambers e+ detection Active Muon Polarimeter S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  17. 17. The Stopped Beam Method K+→m Electromagnetic calorimeter0 detection bwd -  fwd - 768 CsI(Tl) crystals (250mm in length ea.)12 “muon holes” @ 90º to allow m+ to enter 12 spectrometer gaps75% of 4 str S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  18. 18. The Stopped Beam Method K+→m Tracking systemCharged particle tracking bwd -  fwd -  5 Chambers : 1 cylindrical GEM chamber (C0) 1 planar GEM chamber (C1) + Active Target ! 3 planar MWPCs (C2, C3, C4) S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  19. 19. The Stopped Beam Method K+→m e+ Active muon polarimeterm+ polarization measurement bwd -  fwd -  Active Muon Polarimeter Muon stopper : 33 plates (Al, Mg or other light metal alloy) Plate thickness : ~ 2mm Plate gap ~ 8mm S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  20. 20. The Stopped Beam Method K+→mDouble ratio experimentAT = (Afwd - Abwd ) / 2 Ncw - NccwAfwd(bwd) = Ncw + NccwPT = AT / {<cosT>}  : analyzing power <cosT> : attenuation factorIm = PT / KF : physics parameter KF : kinematic factor bwd -  fwd -  S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  21. 21. The Stopped Beam Method K+→m Double ratio experiment AT = (Afwd - Abwd ) / 2 Ncw - Nccw Afwd(bwd) = Ncw + Nccw PT = AT / {<cosT>}  : analyzing power <cosT> : attenuation factor Im = PT / KF : physics parameter KF : kinematic factorCurrent limit from KEK--E246 bwd -  fwd -  PT = - 0.0017 ± 0.0023(stat) ± 0.0011(syst) |PT | < 0.005 (90% CL) Im= - 0.0053 ± 0.0071(stat) ± 0.0036(syst) |Im| < 0.016 (90% CL) M.Abe et al., Phys. Rev. D 73, 072005 (2006) S. Bianchin PANIC 2011 (July 24th – 29th 2011) 11
  22. 22. TREK/E06 Tracking Upgrade GEM technology -- In collaboration with Jefferson Lab, Hampton U. and MIT 70 µm holes 140 µm spacing Planar GEMs (C1) between CsI and C2 Cylindrical GEM (C0) as replacement for old C1 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 12
  23. 23. The C0 Cylindrical GEM for TREK 300 mm160 mm 140 mm • Vertex tracking near target,  < 0.1 mm • Very high rate capability > 1 kHz/mm2 • Radiation-hardness >> 107 particles/mm2 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 13
  24. 24. R&D(1) – APD Readout for CsI(Tl) • Improve the timing characteristics of CsI(Tl) by replacing PIN diode with APD • Pulse shaping and pile-up analysis C1 GEM One-module energy One-module timing new requirement too slow• Both 1 and 9 module tests have been performed using an e+ beam at Tohoku Univ. to check the energy resolution and high-rate performance of APD readout S. Bianchin PANIC 2011 (July 24th – 29th 2011) 14
  25. 25. R&D(2) – Active Muon Polarimeter Top View e+μ+ μ+ Full angular acceptance for positrons – 10x higher than in E-246 Determination of decay vertex – background-free measurement Measurement of e+ angle and approx. energy – higher analyzing power Improved field alignment – suppressed systematic error Full-size prototype tested at TRIUMF in Nov. 2009 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 15
  26. 26. R&D(3) – Active Scintillating Fiber Target Light Guide: Kuraray Y11 WLS Fibre (1400 mm) 3x3 mm2 356 fibres Readout: SiPMT (Hamamatsu MMPC) 1x1 mm2 / 400 px Gain 7.5x105 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 16
  27. 27. Upgrade Timeline Target:  Finer segmentation of TGT scintillating fibres Readout: MPPC (SiPMT) Hamamatsu Particle ID:  Aerogel Cherenkov surrounding target, TOF LFU Charged particle tracking: 30 kW  Add new element C1 between CsI(Tl) and C2 ~2013  Add cylindrical GEM (C0) (remove aerogel) TREK 0 (1&2 photon) detection: 270 kW  New, faster readout of CsI(Tl): APD, MAPD  Wave form analysis using FADCs >100 kW ~2014 Muon polarimeter :  Active polarimeter with increased acceptance  New muon holding field magnet with a parallel field S. Bianchin PANIC 2011 (July 24th – 29th 2011) 17
  28. 28. Summary TREK at J-PARC is gaining momentum “K1.1BR” secondary beamline has been commissioned Measurement of the T-violating transverse muon polarization in Kμ3 decay (~2014) - Large potential for the discovery of New Physics - Upgrade of existing experimental setup of KEK E-246 S. Bianchin PANIC 2011 (July 24th – 29th 2011) 18
  29. 29. The TREK Collaboration http://trek.kek.jpCANADA RUSSIAUniversity of Saskatchewan Russian Academy of Sciences (RAS)Department of Physics and Engineering Institute for Nuclear Research (INR)University of British ColumbiaDepartment of Physics and AstronomyTRIUMFUniversite de Montreal JAPAN Osaka UniversityLaboratoire de Physique Nucleaire Department of PhysicsUniversity of Manitoba National Defense AcademyDepartment of Physics Department of Applied Physics Tohoku UniversityUSA Research Center for Electron Photon Science High Energy Accel. Research Org. (KEK)Massachusetts Inst. of Technology (MIT) Institute of Particle and Nuclear StudiesUniversity of South Carolina Institute of Material Structure ScienceDepartment of Physics and Astronomy Accelerator LaboratoryIowa State University Kyoto University,College of Liberal Arts & Sciences Department of PhysicsHampton University Tokyo Institute of Technology (TiTech)Department of Physics Department of PhysicsJefferson Laboratory VIETNAM University of Natural Sciences S. Bianchin PANIC 2011 (July 24th – 29th 2011) 19
  30. 30. The TREK Collaboration http://trek.kek.jpCANADA RUSSIAUniversity of Saskatchewan Russian Academy of Sciences (RAS)Department of Physics and Engineering Institute for Nuclear Research (INR)University of British ColumbiaDepartment of Physics and AstronomyTRIUMFUniversite de Montreal JAPAN Osaka UniversityLaboratoire de Physique Nucleaire Department of PhysicsUniversity of Manitoba National Defense AcademyDepartment of Physics Department of Applied Physics Tohoku UniversityUSA Research Center for Electron Photon Science High Energy Accel. Research Org. (KEK)Massachusetts Inst. of Technology (MIT) Institute of Particle and Nuclear StudiesUniversity of South Carolina Institute of Material Structure ScienceDepartment of Physics and Astronomy Accelerator LaboratoryIowa State University Kyoto University,College of Liberal Arts & Sciences Department of PhysicsHampton University Tokyo Institute of Technology (TiTech)Department of Physics Department of PhysicsJefferson Laboratory VIETNAMNew collaborators are welcome! University of Natural Sciences S. Bianchin PANIC 2011 (July 24th – 29th 2011) 19
  31. 31. Thank YouS. Bianchin PANIC 2011 (July 24th – 29th 2011) 20
  32. 32. J-PARC March11 Earthquake Damage S. Bianchin PANIC 2011 (July 24th – 29th 2011)
  33. 33. S. Bianchin PANIC 2011 (July 24th – 29th 2011)
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