I. Neutrino Oscillations with the MiniBooNE Experiment at FNAL ● Louis – 4-Year Plan and Status of the MiniBooNE Experiment ● Mills – Fluxes, Cross Sections, Antineutrinos, & SCIBooNE ● Van de Water – Future Experiments: BooNE & OscSNS II. Hadron Physics with the PHENIX Experiment at BNL ● Liu – Overview, Spin Physics, J/'s, Muons, W's ● Leitch – CNM Physics, E906/JPARC, PHENIX Operations ● Leitch – FVTX Proposal Summary, Staffing, & Budget Plan LANL DOE KB01 Review May 10, 2006
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I. Neutrino Oscillations with the MiniBooNE Experiment at FNAL ● Louis – 4-Year Plan and Status of the MiniBooNE Experiment ● Mills – Fluxes, Cross Sections,
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I. Neutrino Oscillations with the MiniBooNE Experiment at FNAL
● Louis – 4-Year Plan and Status of the MiniBooNE Experiment
2006 – Present first neutrino oscillation results from the MiniBooNE experiment in the summer and take data with antineutrinos.2007 – Continue taking data with antineutrinos. If MiniBooNE confirms the LSND evidence for neutrino oscillations*, write proposals for follow-up experiments at Fermilab (BooNE) & ORNL (OscSNS).2008 – Present first antineutrino oscillation results. Continue taking data
with antineutrinos and obtain approval and funding for follow-up experiments at Fermilab (BooNE) & ORNL (OscSNS).2009 - Continue taking data with antineutrinos and begin construction for follow-up experiments at Fermilab (BooNE) & ORNL (OscSNS).2010 - Continue taking data with antineutrinos and complete construction
for follow-up experiments at Fermilab (BooNE) & ORNL (OscSNS).
* If MiniBooNE does not confirm LSND => Join Majorana Double- Decay Experiment
Current State of Neutrino Oscillation Evidence
Expt. Type m2 (eV2) sin22
LSND e
~1 ~3x10-3
Atm. ~2x10-3 ~1
Solar e ~8x10-5 ~0.8
If MiniBooNE Confirms LSND: Physics Beyond the Standard Model & Connections with Astrophysics!
3+2 Sterile Neutrinos Sorel, Conrad, & Shaevitz (hep-ph/0305255)Explain Pulsar Kicks?Explain R-Process in Supernovae?Sterile Neutrinos Explain Dark Matter?
• First focussing horn was replaced during 2004 fall shutdown! First horn set a world record of 96M pulses (previous record set at BNL with 13M pulses)
• Now taking data with Antineutrinos
MiniBooNE Neutrino Events Are Very Clean! Neutrino Signal to Cosmic-Ray Background ~ 5000 to 1!
Contained Neutrino Event Visible Energy Distributon
(MeV)
Contained Neutrino Event Angular Distribution
I. CCQE Events 12C p 11C *
About 48% of the MiniBooNE events are CCQE
MiniBooNE now has one of the largest samples of CCQE events!
Important for Disappearance & e Appearance Background
Serves as the “Golden Mode” for Measuring Cross Sections
Selection: Single ring event, consistent with a muon
CCQE Energy Distribution~10% energy resolution
CCQE Angular Distribution
II. CC + Events 12C + X
Not Well Measured at Low Energies
About 31% of the MiniBooNE events are CC +
MiniBooNE now has the world's largest sample of CC + events!
Important for Disappearance & e Appearance Background
Selection: Double-ring event with 2 Michel-electrons
+
p, np, n+(+)
- decay + decay
CC+ Energy Distribution
CC+ Angular Distribution
III. NC 0 Events 12C
C*
Contributions from:
Resonance Production
Coherent Production
Selection: Double Ring Event with no Michel-electrons
MiniBooNE NC 0 Reconstruction
IV. e Oscillations: e 12C -> e- p 11C*
Blind Analysis
On track for results this summer
Obtaining good agreement between data & MC
Considering using Boosted Decision Trees for PID
PID with Boosted Decision Trees
● MiniBooNE has a deceptively large amount of information & Boosted Decision Trees are tailor-made for MiniBooNE particle identification!
● See physics/0408124 (Roe, Yang, Zhu, Liu, Stancu, McGregor) for a discussion of Boosted Decision Trees, which give better performance than ANN
Boosting Performancefrom physics/0408124
e
Events
Events
Boosting PID Distribution for NuMI Contained 1 Sub-Events
MiniBooNE Schedule
• Run Antineutrinos in 2006
• Complete Analysis (Good agreement between data & MC: neutrino flux, cross sections, detector MC)
• Open Box and Present Results
• If MiniBooNE Confirms LSND => Physics Beyond the Standard Model!