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 ReviewMay 10, 2006

FY06 LANL KB01 Budget

Program DOE Funding LDRD Funding

Neutrinos $1095K $425K

Hadrons $896K $1510K*

Total $1991K $1935K*

LDRD Funding Enhances LANL NP Productivity!

* For both KB01 & KB02

KB01 Neutrino Program

Addresses one of the NSAC Performance

Measures:

Measure fundamental properties of neutrinos and

fundamental symmetries by using neutrinos from the

sun and nuclear reactors and by using radioactive

decay measurements

Neutrino KB01 Program Personnel

Staff Members:

Bill Louis (Co-spokesperson of MiniBooNE NeutrinoExperiment)

Geoff Mills (LANL Team Leader for ME NeutrinoResearch)

Richard Van de Water (Co-spokesperson of MiniBooNE AntineutrinoExperiment)

Postdocs: Chris Green, Gordon McGregor, Heather Ray

Retired LANL Fellows: Gerry Garvey & Hywel White

Engineer: Jan Boissevain

Technicians: Chuck Alexander, Jackie Gonzalez, & Shawn McKenney

Graduate Student: Gabe Powers

Neutrino KB01 Program Research Budget

FY06 Actual Budget: $1095K (DOE) + $425K (LDRD)

FY07 President’s Budget: $1100K (DOE) + LDRD Funding

FY08 Proposed Budget (+10%): $1210K (DOE) + LDRD Funding

FY09 Proposed Budget (+10%): $1331K (DOE) + LDRD Funding

FY10 Proposed Budget (+10%): $1464K (DOE) + LDRD Funding

Neutrino KB01 Program Four-Year Research Plan

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?

MaVaNs & 3+1 Hung (hep-ph/0010126)Sterile Neutrino Kaplan, Nelson, & Weiner (hep-ph/0401099)

Explain Dark Energy?

CPT Violation & 3+1 Barger, Marfatia, & Whisnant (hep-ph/0308299)Sterile Neutrino Explain Baryon Asymmetry in the Universe?

Quantum Decoherence Barenboim & Mavromatos (hep-ph/0406035)

Lorentz Violation Kostelecky & Mewes (hep-ph/0406255)

Extra Dimensions Pas, Pakvasa, & Weiler (hep-ph/0504096)

Sterile Neutrino Decay Palomares-Ruiz, Pascoli, & Schwetz (hep-ph/0505216)

MiniBooNE: A Definitive Test of the LSND Evidence for Oscillations: Search for

e

Alabama, Bucknell, Cincinnati, Colorado, Columbia, Embry-Riddle,Fermilab, Indiana, Los Alamos, LSU, Michigan, Princeton, St. Mary's,

Western Illinois, Yale

Completely differentsystematic errors than LSND

Much higher energythan LSND

Blind Analysis

5x10-3

LANL Contributions to MiniBooNE

● Management

Bill Louis is co-spokesperson of the MiniBooNE Neutrino Experiment

Richard Van de Water is co-spokesperson of the MiniBooNE Antineutrino Experiment

● Electronics & DAQ

Richard Van de Water, Chris Green, Gordon McGregor, & Heather Ray are responsible

● Be Target

Gerry Garvey & Geoff Mills designed and built the Be Target

● Antineutrino Running

LANL LDRD funding paid for the antineutrino charging supplies

● Neutrino Fluxes, & Neutrino Cross Sections

Geoff Mills joined HARP & obtained 20 M triggers of 8.9 GeV/c p-Be data with the Actual MB Target

● Reconstruction & PID Algorithms

Gordon McGregor is co-convener of the Algorithms group

MiniBooNE 71-cm Be Target

Magnetic Focusing Horn

2.5 KV170 KA143 s5 Hz

MiniBooNE Detector Tank

Inside the MiniBooNE Detector

Hamamatsu 8” PMT

R1408 (old)R5912 (new)

#stages = 9 (old) 10 (new)

t ~ 1.7 ns (old) 1.2 ns (new)

peak/valley ~ 1.1 (old) 1.5 (new)

MiniBooNE Neutrino Flux

HARP at CERNE910 at BNL

NUANCE Monte Carlo

After e PID

Selection

Expectation for 3.25E20 Protons on Target

Expected MiniBooNE Sensitivity

Measurement of Oscillation Parameters

MiniBooNE Highlights

• MiniBooNE has collected ~750K neutrino events from ~7E20 Protons on Target

• Experiment is working well (>99% livetime & 99% of PMT channels working well)

• Clearly reconstructing CCQE, CCPI+, NCPI0, & NCEL events

• 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!