Particle Production;Kaon and Muon Physics with Project-X Rajendran Raja
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Transcript of Particle Production;Kaon and Muon Physics with Project-X Rajendran Raja
Particle Production;Kaon and Particle Production;Kaon and Muon Physics with Project-XMuon Physics with Project-X
Rajendran RajaRajendran Raja FermilabFermilab
Photo: H. Hayano, KEKPhoto: H. Hayano, KEKRajendran Raja Project-X
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The Mu2e experiment at Fermilab– Main Injector
version– Will likely carry on to the Project-X era
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• Forbidden in Standard Model • Observation of neutrino mixing shows this can occur at a very small rate
• Photon can be real (->e) or virtual (N->eN)
3
e
0Z
First Order FCNC: Higher order dipole “penguin”:
e
Virtual mixing
W
54
2
3,22
21* 10
323)(
i W
ieii MmUUeBr
The deepest probe of Lepton Flavor Physics: Ultra-rare -Decays:
The MEG(PSI) experiment has probed to 10-11 level.
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Rare muon decays in Project-X:-N→e-N Sensitivity to New Physics
CΛ = 3000 TeV
-4HH μμμeg =10 ×g
Compositeness
Second Higgs doublet
2Z
-17
M = 3000 TeV/c
B(Z μe) <10
Heavy Z’, Anomalous Z coupling
Predictions at 10-15
Supersymmetry
2* -13μN eNU U = 8×10
Heavy Neutrinos
L
2μd ed
M =
3000 λ λ TeV/c
Leptoquarks
After W. Marciano10/18/2011 4
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Mu2e@Project-X
Measuring couplings of SUSY observed at the LHC.
Now
Mu2e
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MECO spectrometer design
for every incident proton 0.0025 ’s are stopped in the 17 0.2
mm Al target foils
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Cost and Schedule• This is a technically limited
schedule• Critical Path is Superconducting
Solenoids• $200M “fully-loaded” Total Cost
data-taking 1st quarter Calendar 201610/18/2011 7
Muon g-2 @ FNAL• Based on results of the August 2010 Intensity Frontier review, DOE has
decided to go ahead with the next generation muon g-2 experiment by moving the storage ring from Brookhaven to Fermilab.
• Fermilab can deliver 21x the total Brookhaven statistics in less than 2 years.
• Modest modifications of existing beamlines and detectors allow us to drastically reduce the dominant systematic errors in the precession frequency measurement.
• This is matched with a world wide program to validate the SM calculation of g-2 (Novosibirsk, KLOE, B-factories, BES. Lattice…)
• Currently reevaluating the schedule given budget constraints but expect to start taking data in the middle of this decade.
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Project-X talk proper• Kaons as part of Project-X are a direct result of the CW option ( as are the
nuclear physics options). Much higher intensities result from the CW option.
• CW option is a result of the push to do ADS using project-X. 2007 Accel Division Seminar I gave on ADS mentioned CW. It was picked up by several attendees and Option 2 was born.
• AHIPA09 workshop further cemented the broad base of physics possible using a CW Project
• ADS as part of Project-X was further strengthened at the Accelerators for America’s future Workshop held by the DoE.
•
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The Project-X Research Program• Long baseline neutrino oscillation experiments: Driven by a high-power proton source with proton energies between 50 and 120 GeV
that would produce intense neutrino beams directed toward massive detectors at a distant deep underground laboratory.
• Kaon, muon, nuclei & neutron precision experiments driven by high intensity proton beams running simultaneously with the neutrino program:
These could include world leading experiments searching for muon-to-electron
conversion, nuclear and neutron electron dipole moments (edms), and world-leading precision measurements of ultra-rare kaon decays.
• Platform for evolution to a Neutrino Factory and Muon Collider
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Detailed Discussion: Project X website
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The Window of Ultra-rare Kaon Decays at Project X
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Standard Model rate of 3 parts per 100 billion! Project X will has sensitivity for 1000 SM events
BSM particles within loops can increase the rate by x10 with respect to SM.
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Rates sensitive to other BSMs:Warped Extra Dimensions as a Theory of
Flavor??
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Buras et al. SM accuracy of <5%, motivates 1000-event experiments
Effect of Warped Extra Dimension Models on Branching Fractions
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The Project-X Accelerator Configuration
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This Science has attracted Competition:The Proton Source Landscape
This Decade...
• Pulsed machines driving neutrino horns: SPS (0.5 MW), Main Injector ( 0.3 MW now, 0.7 MW for Nova), JPARC (plan for 1.7 MW)
• Cyclotrons and synchrotrons driving muon programs PSI (1.3 MW, 600 MeV), JPARC RCS (0.1-0.3 MW)
• Synchrotrons driving kaon physics programs. SPS (0.015 MW), JPARC (goal of >0.1 MW), Tevatron (0.1 MW)
• Linear machines driving nuclear and neutron programs: SNS, LANL, FRIB….not providing CW light-nuclei beams.
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M Seidel, PSI
Project-X
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The High Duty Factor Proton Source Landscape This Decade...
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x D
uty
Fact
or
*
*
*
PSI
TRIUMF power
Stopped/Slow kaon yield/Watt
* Beam power x Duty Factor
Project-X CW-Linac
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“Continuous Wave” (CW) Linac for Rare Processes…
• Beam extraction challenge is finessed.
• Duty factor is very high.
• The high frequency bandwidth intrinsic to a Linac can be exploited to generate excellent time resolution (t~20psec), a very powerful tool to face a high intensity environment.
• JLAB has demonstrated that beam can be cleanly multiplexed between many targets with minimal losses. These “touchless” RF beam multiplexers are enabled by the high linac bandwidth.
• Excellent beam power scaling.
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An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…
Muon Physics:
Next generation muon-to-electron conversion experiment, new techniques for higher sensitivity and/or other nuclei.
Next generation (g-2) if motivated by next round, theory, LHC. New techniques proposed to JPARC that are beam-power hungry…
edm 3e ee+ A +A’ ; A e+A’ ; e-(A) e- e-(A) Systematic study of radiative muon capture on nuclei.
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Day-1 Experiment
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Pursuing the Holy Grail of Stopped Muon Experiments:A High Acceptance Mono-energetic muon source—synergy with muon collider/neutrino
factory
Rajendran Raja Project-X From the PX muon white paper10/18/2011 19
An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…
Kaon Physics:
K+ : >1000 events, Precision rate and form factor. KL 1000 events, enabled by high flux & precision
TOF. K+ : Measurement of T-violating muon polarization. K+ x: Search for anomalous heavy neutrinos. KL ee10% measurement of CP violating amplitude. KL 10% measurement of CP violating amplitude. K0X: Precision study of a pure K0 interferometer: Reaching out to the Plank scale (mK/mK ~ 1/mP) K0,K+ LFV: Next generation Lepton Flavor Violation experiments …and more
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Day-1 Experiments
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Taking a page from the JPARC hadron hall playbook: One target can serve multiple kaon experiments.
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Neutral K experiment
Charged K experiment
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An Incomplete Menu of World Class Research Targets Enabled by Project-X. continued…
Nuclear Enabled Particle Physics: Production of Ra, Rd, Fr isotopes for nuclear edm experiments that are
uniquely sensitive to Quark-Chromo and electron EDM’s.
Baryon Physics: pp +K0p+ ; p(HyperCP anomaly, and other rare + decays) pp K+0p+ ; 0 ultra rare decays 00 oscillations (Project-X operates below anti-baryon threshold) Neutron EDMs
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Day-1 Experiment
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Road to Future Progress: Neutrino Research Program
• Strong international community. US community is healthy and growing.
• Explicitly engage the Neutrino Factory community to explore and develop a design driven by Project-X—Leads to muon collider
• Good opportunities for collaboration and leadership.
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Road to Future Progress: Muon Research Program
• International community active, current Fermilab community is small, but growing with Mu2e and the possibility of (g-2).
• No conceptual accelerator & beam design yet for driving next-generation e conversion experiment beyond Mu2e and COMET at JPARC. A PRISM (FFAG) based solution needs further accelerator design work. Interesting synergies with Muon Collider cooling concepts are being explored that would clearly exploit Project-X.
• Great opportunities for collaboration and leadership.
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Road to Future Progress: Kaon Research Program
• International community active, Fermilab community is dormant now. Buoyed to some extent now by the US quark flavor physics community—but this community is currently under stress regarding futures.
• Excellent basis for 1000-event K+ experiment based on extrapolating techniques developed and demonstrated by BNL E787/E949 experiments.
• Good basis for 1000-event KL experiment based on the KOPIO
conceptual design developed for the BNL AGS.
• Great opportunities for collaboration and leadership.
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Summary Project-X is a next generation high intensity proton source that will deeply
reach for physics beyond the Standard Model and incisively probe of the origins of matter:
Neutrinos: An after-burner for LBNE that reduces the tyranny of (Detector-Mass x Running-time) by x3, and a foundation for a Neutrino Factory.
Rare Processes: Game-changing beam power and timing flexibility that can support a broad range of particle physics experiments.
Prospects: International collaboration formed, ongoing substantial US (DOE) investments in R&D (Project-X + SRF + ILC) on Super Conducting RF accelerator technology supporting Project-X.
Earliest construction start of 2015, operations in 2020.
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Project-X Rare Processes Research Campus
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