Large precise set of analyzing powers for .

Analyzing Powers of the Deuteron-Proton Breakup in a Wide Phase Space Region Elbieta StephanInstitute of PhysicsUniversity of SilesiaKatowice, PolandElbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV

University of Silesia, Katowice, Poland

Jagiellonian University, Krakw, PolandKVI, Groningen, The Netherlands

Krakw-Bochum GroupEFT/ChPT Group Theory SupportHannover/Lisboa Group2Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Why Do We Measure Analyzing Powers?A few times more additional data points (supplementing cross sections)Potentially stronger sensitivity to small ingredients (sums of interfering amplitudes) Small Coulomb effects - it can be easier to trace 3NF!Data measured for elastic scattering process in the similar range of energies show that analyzing powers are more "troublesome" than cross section - problems with spin part of interaction?In order to reach meaningful conclusions about the interaction models precise data in large phase space regions are neededElbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Vector and Tensor Polarization States7 states: Pz Pzz0.0080.05PzmaxPzzmaxPzPzz+1/3-10.265-0.73+2/300.480-0.08-2/30-0.4690.060+1-0.0580.520-20.009-1.37+1/3+10.2190.6100

140 E-E telescopes3-plane MWPCAngular range : = (12, 38), = (0, 360)Elbieta Stephan, University of Silesia, FB19, Bonn 2009

Beam polarization

pPzmax=0, Pzzmax=+1Pzmax=0, Pzzmax=-2Pzmax=-2/3, Pzzmax=0Pzmax=+2/3, Pzzmax=0Pzmax=+1/3, Pzz=-1Pzmax=+1/3, Pzz=+1

Elastic scattering cross section:iT11, T20, T22 : measured at RIKEN, Eur. Phys. J. 31, 383 (2007) Elbieta Stephan, University of Silesia, FB19, Bonn 2009Analyzing powers of elastic scattering

1H(d,d)p1H(d,dp)GeWall @ COSYH. Mardanpour et al., Eur. Phys. J. 31, 383 (2007)H. Witaa et al.,Few-Body Systems 15, 67-85 (1993)E. Stephan et al., Phys. Rev. C 76, 057001 (2007)

K. Sekiguchi, Phys. Rev. C 70, 014001 (2004)Elbieta Stephan, University of Silesia, FB19, Bonn 2009d + 1H Measurement at 130 MeVT20 for elastic scattering and breakup reaction

Elbieta Stephan, University of Silesia, FB19, Bonn 2009

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1H(d,pp)n Measurement at 130 MeVFit of analyzing powers Elbieta Stephan, University of Silesia, FB19, Bonn 2009

even observables: Ay, Axx, Ayyodd observables: Ax, Axy; e.g.: Constrains on the breakup analyzing powers set by parity conservation

Elbieta Stephan, University of Silesia, FB19, Bonn 2009

1H(d,pp)n Measurement at 130 MeVBreakup analyzing powers fit with applies parity constrains

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Analyzing Power Results SummaryVector (Ax, Ay) and tensor analyzing powers (Axx, Ayy, Axy) determined in the large part of the phase space Nearly 800 data points per observable 1, 2 = 15o 30o; grid 5o ; = 2o12 = 40o 180o; grid 20o ; = 10oS [MeV] = 40 160; grid 4; S = 4Statistical accuracy 0.01 0.05 (dominating uncertainty)Systematic errors well under control Global comparisons with theory (2 test)non-negligibleaveraging

Elbieta Stephan, University of Silesia, FB19, Bonn 2009Tensor Analyzing Power Results configurations with predicted 3NF effects

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Analyzing Power Results - 2 tests

l=1 for "even"l=0 for "odd"Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Analyzing Power Results - 2 tests

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Vector Analyzing Power Results

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Tensor Analyzing Power Results Problem with TM99

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Tensor Analyzing Power Results problem at low Erel ? not cured by inclusion of Coulomb!

Elbieta Stephan, University of Silesia, FB19, Bonn 2009Summary of analyzing power results:Large, precise basis for comparing description provided by various approachesGenerally no big discrepancies between data and theoretical predictionsVector analyzing powers reveal very low sensitivity to 3NFTensor analyzing powers: Coulomb effects are rather small, but not so strongly "localized" in particular ranges of phase space as in the case of cross sectioncurrent model 3NF do not provide precise description of Axy in some regions (small discrepancies also for Axx and Ayy) problems with spin part of 3NF?relativistic effects? doubtful... Furher developments in theories are very important!New data at different beam energies (e.g. 100 MeV) and covering still larger part of phase space are being analyzedElbieta Stephan, University of Silesia, FB19, Bonn 2009Thank you for your attention!

Elbieta Stephan, University of Silesia, FB19, Bonn 2009

E WallBINA detection system at KVIBINA DetectorMWPCPhoswich BallStopping (E) WallElbieta Stephan, University of Silesia, FB19, Bonn 2009Investigations of 3N/4N continuum Summary

Rich set of high precision cross sections and analyzing powers data: Data at Ed = 130 MeV supplemented with results for forward proton angles (GeWall@COSY)Complete set for Ed = 100 MeV (BINA)Measurements for pd systems at 180 and 135 MeV (BINA)Developments in theoretical calculations for 3N system (3N force, Coulomb interaction, relativistic effects, higher order in ChPT )Studies of breakup processes in dd system (BINA) at 130 MeV

Elbieta Stephan, University of Silesia, FB19, Bonn 2009Studies of the possible sources of systematic effects:Determination of proton emmission angles Control over geometry - kinematics of the elastic scattering process.Phase of j asymmetry distributions for elastic scattering, uncertainty below 0.5o.Uncertainty of polarization determination well under control, systematic error of about 3 %.General consistency of the data do they fulfill constrains of parity conservation? Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Analyzing Power Results T20

Elbieta Stephan, University of Silesia, FB19, Bonn 20091H(d,pp)n Measurement at 130 MeV Coordinate system

Elbieta Stephan, University of Silesia, FB19, Bonn 2009