Neutrino Scattering in the NuMI Beam
To Perform a High-Statistics Neutrino ScatteringExperiment using an On-Axis Fine-grained Detector
in the NuMI Beam
MINERA (Main INjector ExpeRiment v-A)
MINERA Collaboration Meeting27-28 June 2003
Argonne - Athens - California/Irvine - Colorado - Dortmund - Duke - Fermilab -
Hampton - I I T - INR/Moscow -James Madison - Jefferson Lab - M I T -
Minnesota - Pittsburgh - Rochester - Rutgers - South Carolina - Tufts19 Groups: Red = HEP, Blue = NP, Green = Theorists only
Neutrino Scattering in the NuMI Beam
52 Collaborators (so far…)
J.Arrington, D.H.Potterveld, P.E.Reimer, T.Joffe-MinorArgonne National Laboratory, Argonne, Illinois
C.Andreopoulos, G.Mavromanolakis, P.Stamoulis, N.Saoulidou, G.Tzanakos, M.Zois
University of Athens, Athens, Greece
D.CasperUniversity of California, Irvine, California
E.R.KinneyUniversity of Colorado, Boulder, Colorado
E. PaschosUniversity of Dortmund, Dortmund, Germany
D.DuttaDuke University, Durham, North Carolina
D.Harris, M. Kostin, J.G.Morfin, P.ShanahanFermi National Accelerator Laboratory, Batavia, IL
M.E.ChristyHampton University, Hampton, Virginia
N.SolomeyIllinois Institute of Technology, Chicago, Illinois
I.NiculescuJames Madison University, Harrisonburg, Virginia
R. Carlini, R.Ent, D.Gaskell, J. Gomez, C.E.Keppel. W.Melnitchouk, S.Wood
Jefferson Lab, Newport News, Virginia
A.BruellM.I.T., Cambridge, Massachusetts
M.DuVernoisUniversity of Minnesota, Minneapolis, Minnesota
S. KulaginInstitute for Nuclear Resarch, Moscow, Russia
S.Boyd, D.Naples, V. PaoloneUniversity of Pittsburgh, Pittsburgh, Pennsylvania
A.Bodek, H. Budd, P. de Babaro, G. Ginther, S, Manly, K. McFarland, W. Sakumoto, P. Slattery, M. Zielinsky
University of Rochester, Rochester, New York
R.Gilman, C.Glasshausser, R.RansomeRutgers University, New Brunswick, New Jersey
T.Bergfeld, A.Godley, S.R.Mishra, C.RosenfeldUniversity of South Carolina, Columbia, South Carolina
H.Gallagher, W.A.MannTufts University, Medford, Massachusetts
Neutrino Scattering in the NuMI Beam
Collaboration Meeting Agenda - FridaySOFTWARE TOPICS
9:30 - 10:15 Physics Monte Carlo - Dave & Hugh
10:15 - 10:45 Break
10:45 - 12:30 Description of GEANT Simulation
and chance to play with the program - Steve B.
PHYSICS CHAPTERS
14:00 - 14:45 Elastic Channel - Arie and Howard
14:45 - 15:15 Resonance Production - Thia (for Steve W.)
15:15 - 15:45 Dynamical Model Of Weak Pion Production - Harry Lee
15:45 - 16:15 Break
16:15 - 16:45 Strange Particle Production - Nick and Tony
16:45 - 17:00 Charm Production - Vittorio
17:00 - 17:45 Cross-sections, Structure Functions, Duality and Nuclear Effects - Thia and Jorge
9:30 - 9:45 NC/CC - Donna
9:45 - 10:25 MINERvA and Oscillation Physics - Debbie and Hugh
10:25 - 10:30 Generalized Parton Distributions -
10:30 - 10:45 Break
10:45 - 11:30 General Discussion including Overall Software Organization (Dave, Hugh & Steve)
Neutrino Scattering in the NuMI Beam
Collaboration Meeting Agenda - Saturday
DETECTOR ISSUES 11:35 - 12:00 Magnetized detector - George 12:00 - 12:30 NOMAD detector experience - Sanjib
2:00 - 2:30 Optimizing scintillator strips - Steve B.
PHOTOSENSOR FEST!
2:30 - 2:35 Ground rules - Kevin 2:35 - 3:00 APDs - Howard 3:00 - 3:25 II/CCD - Steve M./ Ron R. 3:25 - 3:50 Double-ended readout Arie 3:50 - 4:15 MAPMT costs - Kevin 4:15 - 4:45 Break 4:45 - 5:15 Discussion Photosensors
5:15 - 5:35 Splatter and TOF Status - Nick 5:35 - 6:00 Next steps: "default design” and costing - Kevin
Neutrino Scattering in the NuMI Beam
New MINOS 5-Year Run-plan - D. Michael
Neutrino Scattering in the NuMI Beam
Latest NuMI Beam Monte Carlo - M. Messier
Neutrino Scattering in the NuMI Beam
Change in le-beam flux: V14 to V15
Neutrino Scattering in the NuMI Beam
Le, s-me and s-he Beams
le beam
s-me beam
hs-he beam
Neutrino Scattering in the NuMI Beam
Biggest Uncertainty isHadron Momentum Distributions
Neutrino Scattering in the NuMI Beam
Pt Distributions from Monte Carlos
Neutrino Scattering in the NuMI Beam
Dependence of le-beam spectrum on model
Neutrino Scattering in the NuMI Beam
DON’T FORGET!
WITH E-907 (MIPP) THIS UNCERTAINTY IN HADRON PRODUCTION SPECTRA WILL BE RESOLVED BY
MEASURING THE SPECTRA OF HADRONS COMING OFF THE NUMI TARGET
Neutrino Scattering in the NuMI Beam
Obtaining the Latest NuMI Beam Simulations
Neutrino Scattering in the NuMI Beam
Tot, Fi(x,Q2),Duality and Nuclear Effects
Experiment: (only) on nuclear targets: d/dxdQ off, mainly, carbon Could say F2 = xF3 at high x, but … Concentrate on careful measurement of
transition region Low energy (< 10 GeV) primarily from the
70’s and 80’s suffering from low statistics and large systematics (mainly from flux measurements).
Mainly bubble chamber results --> larger correction for missing neutrals.
D. Naples - NuInt02
Neutrino Scattering in the NuMI Beam
How well do we model Tot ?
S. Zeller - NuInt02
Neutrino Scattering in the NuMI Beam
D. Naples Conclusions from NuInt02
Neutrino Scattering in the NuMI Beam
Nuclear Effects
Without can’t measure flavor dependence of nuclear effects However, can make careful measurement of ratio of d/dxdQ
off C, Fe and Pb. Never measured before. Study shadowing and EMC effect with neutrinos!
Can measure dD(z)/dxdQ off C, Fe and Pb which would be a convolution of all nuclear effects including: boson (quark-flavor dependence) and transparency (final-state interactions / formation-length /color transparency)effects.
Behavior of F2 as x --> 1.0 in Nuclear Environment Few-nucleon-correlation and multi-quark models allow quarks to have
higher momentum ---> high x tail with F2 e- ax
CCFR: a = 8.3 ± 0.7 ± 0.7, e: a = 16 ± 0.5
Neutrino Scattering in the NuMI Beam
Nuclear Effects with Neutrinos
Ratio Fe/C: Statistical ErrorsFrom MINOS Parasitic Run
xBj MINOS MINOS all DIS
0.0 - .01 1.8 % xxx
.01 - .02 1.4 10 %
.02 - .03 1.3 6
.03 - .04 1.2 4
.04 - .05 1.1 3
.05 - .06 1.1 2.6
.06 - .07 1.0 2.3
.1.01.0010.5
0.6
0.7
0.8
0.9
1.0
Pb/C
Fe/C
Kulagin Predictions: Fe/C and Pb/C - ALL EVENTS - 2-cycle
x
R (A/C)
( running only) Q2 = 0.7 GeV2
Neutrino Scattering in the NuMI Beam
Add an run
Experiment: and on nuclear targets: Also measure d/dxdQ off, mainly, C Concentrate on careful measurement of
transition region In addition can extract all 6 structure
functions individual PDF's in a given x,Q bin.
,x Q2 , (1− )y 2( )G2 2πx
X = 0.1 - 0.125Q2 = 2 - 4 GeV2
(1-y)2
R = Rwhitlow
Neutrino1 year he-beam
Anti-Neutrino2 years he-beam
Neutrino Scattering in the NuMI Beam
Physics Results: High-xBj Parton Distribution Functions
The particular case of what is happening at high- xBj is currently a bit of controversial with indications that current global results not correct:
Drell-Yan production results ( E-866) may indicate that high-xBj (valence) quarks OVERESTIMATED.
A Jlab analysis of Jlab and SLAC high x DIS indicate high-xBj quarks UNDERESTIMATED.
≈ Statistical Errors for 1 year of he- xBj CH LH2 LD2
.6 - .65 0.6% 2.2% 1.5%
.65 - .7 0.7 2.6 1.7
.7 - .75 1.0 3.7 2.5
.75 - .8 1.3 5 3
.8 - .85 2 7 5
.85 - .9 3 11 7
.9 - 1.0 4 14 10
Measured / CTEQ6
CTEQ6
SLAC points
Might be d/u ratio
Neutrino Scattering in the NuMI Beam
Nuclear Effects with both and
First real measurement of flavor dependent nuclear effects of particular importance for neutrino scattering experiments.
Major difference in predictions Kumano (valence LESS shadowed than sea) vs Kulagin (valence MORE shadowed than sea) :
Ca
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