Physics - Detector Optimization Studies NuInt05 Highlights Jorge G. Morfín Fermilab

Fermilab PAC: MINER A - 2 April What is Value Engineering (VE)? (1) It’s a way of determining the basic function of an item. (2) It’s a way of evaluating high cost areas and systematically reducing those costs. (3) It’s a way of analyzing a problem area and developing alternative ways of resolving the problem. (4) It’s a way of selecting the best possible alternative to perform the basic function at the lowest cost. Value Engineering thus extends financial, manpower, and material resources. T.J. Sarlina

Fermilab PAC: MINER A - 2 April Value Management (VM) principles are essential to proper program management and have been incorporated from the early design and development stages of the technical requirements. These principles have also been employed as the cost and schedule parameters matured over time. Use of the VM approach provides a systematic framework to analyze the functions of systems, equipment, facilities, services, and supplies for the purpose of achieving the essential functions at the lowest life cycle cost consistent with required performance, quality, reliability and safety. VM elements have been incorporated as a part of each of the technical and program reviews to date.

Fermilab PAC: MINER A - 2 April VM Examples  Anything with 2 or more vendor quotes  Reuse of existing materials  Determining physics drivers for nuclear targets  PMT’s on top or bottom  Need for a Coil  Granularity - size of triangles  Off-the-shelf purchase vs custom equipment

Fermilab PAC: MINER A - 2 April What this means for us….  Short concise document for each physics-channel study containing: t Description of physics goals t What components of detector used in the analysis t Technical requirements/detector response to meet the physics goals t Description of how detector response depends on design modifications t Description of how physics results depend on design modifications

Fermilab PAC: MINER A - 2 April Coherent Pion Production MINER A: 85 K CC / 37 K NC: CH and 25 K (50K) CC / 13 K (25K)NC: Fe (Pb) H. Gallagher Selection criteria reduce the signal by a factor of three - while reducing the background by a factor of ≈ signal Selection criteria discussed at previous meeting

Fermilab PAC: MINER A - 2 April Expected MINER A Results - Coherent  Production Rein-Seghal Paschos- Kartavtsev Expected MiniBooNe and K2K measurements Errors now include estimated background subtraction Miner A MINER A’s nuclear targets allow the first measurement of the A-dependence of  coh across a wide A range

Fermilab PAC: MINER A - 2 April Coherent production: Changing strip size I have run my coherent code with new resolutions based on the changes mentioned here. If I understand correctly, in trial (1) I should be degrading the angular resolution by 4% and in trial (2) I should be improving it by 3%. I have taken the nominal smearing to be 0.5 degrees so these would give 0.52 deg and deg respectively. I am really surprised that the angular resolution changes so little for such large changes in the strip size. Degradation at this level has essentially zero impact on the coherent analysis as far as I can tell. The changes I get in the number of events passing cuts where I have smeared the reconstruction using these new numbers is on the same order as the statistical uncertainty in the MC sample I have handy, which is around 2.5%.

Fermilab PAC: MINER A - 2 April Recent K2K SciBar Result M. Hasegawa et al. - hep - ex/  Expect 470 CC coherent events according to Rein-Sehgal  Find 7.6 ± 50.4

Fermilab PAC: MINER A - 2 April MINER A CC Quasi-Elastic Measurements Fully simulated analysis, - realistic detector simulation and reconstruction Average: eff. = 74 % and purity = 77% Expected MiniBooNE and K2K measurements  Quasi-elastic ( + n -->    + p, around 800 K events)  Precision measurement of  E ) and d  /dQ important for neutrino oscillation studies. t Precision determination of axial vector form factor (F A ), particularly at high Q 2 t Study of proton intra-nuclear scattering and their A-dependence (C, Fe and Pb targets)

Fermilab PAC: MINER A - 2 April Lar TPC: Evt 3: QUASI ELASTIC (2.5%) Proton K.E. dominated by the requirements 1.K.E. > 50 MeV 2.Full containment 61 events - 73 expected from MC

Fermilab PAC: MINER A - 2 April NOMAD: The sleeping giant wakes…slowly

Fermilab PAC: MINER A - 2 April NOMAD: Staatistics and Physics program

Fermilab PAC: MINER A - 2 April

Fermilab PAC: MINER A - 2 April NOMAD: QE event

Fermilab PAC: MINER A - 2 April NOMAD: QE result

Fermilab PAC: MINER A - 2 April Resonance Production -  S. Wood and M. Paschos Total Cross-section and d  /dQ 2 for the  ++ assuming 50% detection efficiency Errors are statistical only: 175K  ++ TT

Fermilab PAC: MINER A - 2 April MiniBooNe: CC  + Measurement

Fermilab PAC: MINER A - 2 April Nuclear Effects MINER A: 2.8 M events off CH, 600 K off C and 1 M events off of Fe and Pb S. Boyd, JGM, R. Ransome Q2 distribution for SciBar detector MiniBooNE From J. Raaf (NOON04) All “known” nuclear effects taken into account: Pauli suppression, Fermi Motion, Final State Interactions They have not included low- shadowing that is only allowed with axial-vector (Boris Kopeliovich at NuInt04) L c = 2 / (m  2 + Q 2 ) ≥ R A (not m  2 ) L c 100 times shorter with m  allowing low -low Q 2 shadowing ONLY MEASURABLE VIA NEUTRINO - NUCLEUS INTERACTIONS! MINER A WILL MEASURE THIS ACROSS A WIDE AND Q 2 RANGE WITH C : Fe : Pb Problem has existed for over two years Larger than expected rollover at low Q 2

Fermilab PAC: MINER A - 2 April NuInt05 - Nuclear Effects

Fermilab PAC: MINER A - 2 April High x Bj parton distributions How well do we know quarks at high-x?  Ratio of CTEQ5M (solid) and MRST2001 (dotted) to CTEQ6 for the u and d quarks at Q 2 = 10 GeV 2. The shaded green envelopes demonstrate the range of possible distributions from the CTEQ6 error analysis.  Recent high-x measurements indicate conflicting deviations from CTEQ: E-866 u V too high, NuTeV u V & d V too low  CTEQ / MINER A working group to investigate high-x Bj region.

Fermilab PAC: MINER A - 2 April Indication that the valence quarks not quite right at high-x?? E866 -Drell-Yan Preliminary Results (R. Towell - Hix2004) x beam distribution measures 4u + d as x--> 1. Both MRST and CTEQ overestimate valence distributions as x --> 1 by 15-20%. Possibly related to d/u ratio as x --> 1, but requires full PDF-style fit. Radiative corrections have recently been calculated. (Not yet fully applied) x target x beam

Fermilab PAC: MINER A - 2 April NuTeV Compared to CCFR (currently in PDF fits) at High-x Indicates Effect Opposite to E866 V. Radescu - DIS04 nuclear effects?

Fermilab PAC: MINER A - 2 April NOMAD Analysis - NOT DATA YET Twist -6 is required