neutrino scattering in the numi beam to perform a high-statistics neutrino scattering experiment...

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


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


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)


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


New MINOS 5-Year Run-plan - D. Michael


Latest NuMI Beam Monte Carlo - M. Messier


Change in le-beam flux: V14 to V15


Le, s-me and s-he Beams

le beam

s-me beam

hs-he beam


Biggest Uncertainty isHadron Momentum Distributions


Pt Distributions from Monte Carlos


Dependence of le-beam spectrum on model


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


Obtaining the Latest NuMI Beam Simulations


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


How well do we model Tot ?

S. Zeller - NuInt02


D. Naples Conclusions from NuInt02


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


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


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


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


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

neutrino scattering in the numi beam to perform a high-statistics neutrino scattering experiment...

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