scholarly journals Status of NP spin-dependent total cross sections and spin-spin correlation parameters

1992 ◽  
Author(s):  
Michael E. Beddo
Keyword(s):  
Cross Sections ◽  
Spin Correlation ◽  
Total Cross Sections ◽  
Correlation Parameters ◽  
Spin Correlation Parameters

Polarization and spin-correlation parameters in proton-3He elastic scattering at 19.4 MeV

1971 ◽  
Vol 160 (2) ◽  
pp. 428-436 ◽  
Author(s):  
S D. Baker ◽  
T.A. Cahill ◽  
P. Catillon ◽  
J. Durand ◽  
D. Garreta
Keyword(s):  
Elastic Scattering ◽  
Spin Correlation ◽  
Correlation Parameters ◽  
Spin Correlation Parameters

Dynamic polarization work at A. E. R. E., Harwell

1965 ◽  
Vol 283 (1395) ◽  
pp. 480-480
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Spin Correlation ◽  
Proton Scattering ◽  
Dynamic Polarization ◽  
Target Polarization ◽  
Proton Proton ◽  
Low Intensity ◽  
Correlation Parameters

In proton-proton scattering, when both incident and target protons have polarizations of P 1 and P 2 respectively in a direction normal to the plane of scattering, the differential cross-section, σ, at angle θ is given by σ( θ ) = σ 0 ( θ ) {1 + ( P 1 + P 2 ) P 3 ( θ ) + P 1 P 2 C NN ( θ )}. P 3 ( θ ) and C NN ( θ ) are the polarization and spin-correlation parameters of proton-proton scattering, and are functions of incident proton energy and scattering angle. The Harwell synchrocyclotron provides a choice of two proton beams at an energy of 142MeV ( a ) high intensity P 1 = 0, and ( b ) low intensity P 1 = ±0.48. P 3 ( θ ) is a well-known quantity, and the two remaining unknowns, P 2 and C NN ( θ ) can be obtained by comparing differential cross-sections measured with beams ( a ) and ( b ). Somewhat higher precision is obtainable in such a measurement of the target polarization P 2 than by either of the existing solid-state methods (Schmugge & Jeffries 1962; Abragam, Borghini & Chapellier 1962).

ELASTIC PROTON-PROTON SCATTERING AT GEV ENERGIES: ANALYZING POWERS ANAND SPIN CORRELATION PARAMETERS ANN, ASS, AND ASL

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1959-1962
Author(s):  
◽  
F. HINTERBERGER ◽  
K. O. EYSER
Keyword(s):  
Phase Shift ◽  
Spin Correlation ◽  
Meson Exchange ◽  
Proton Scattering ◽  
Excitation Functions ◽  
Proton Proton ◽  
Analyzing Powers ◽  
Elastic Proton ◽  
Correlation Parameters ◽  
Spin Correlation Parameters

The analyzing powers ANand spin correlation parameters ANN, ASS, and ASLof the elastic proton-proton scattering have been measured with an internal polarized atomic beam target at the cooler synchrotron COSY. Excitation functions were taken continuously during the acceleration and deceleration of the internal beam for kinetic energies ranging between 0.45 and 2.5 GeV and scattering angles 30°≤Θc.m.≤90°. The analyzing power excitation functions provide a new polarization standard in the GeV region. The spin correlation data on ASSdisagree strikingly with existing phase shift solutions. The addition of the new polarization data to the world database removes some of the ambiguities in the phase shift solutions and the direct reconstruction of scattering amplitudes. The data are compared with a recent extension of a meson-exchange potential model to higher energies.

COMPLETE DETERMINATION OF REACTION AMPLITUDES

1988 ◽  
Vol 03 (11) ◽  
pp. 1113-1116
Author(s):  
G. RAMACHANDRAN ◽  
S.N. SANDHYA
Keyword(s):  
Spin Correlation ◽  
Final State ◽  
Complete Determination ◽  
Correlation Parameters ◽  
State Spin ◽  
Spin Correlation Parameters

The reaction amplitudes 〈jcmc;jdmd|T|jama;jbmb〉 for a+b→c+d, with arbitrary spins jv, are completely determined if one carries out measurements of a subset of final state spin correlation parameters [Formula: see text] where the index ‘s’ denotes appropriate initial spin preparations.

SPIN-DEPENDENT DIFFERENTIAL CROSS SECTIONS AT SMALL ANGLES AT RHIC ENERGIES

1999 ◽  
Vol 14 (02) ◽  
pp. 253-269 ◽  
Author(s):  
N. AKCHURIN ◽  
S. V. GOLOSKOKOV ◽  
O. V. SELYUGIN
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Differential Cross ◽  
Spin Correlation ◽  
Heavy Ion ◽  
Differential Cross Sections ◽  
Relativistic Heavy Ion Collider ◽  
Double Spin ◽  
Proton Coupling ◽  
Correlation Parameters

Spin-dependent pomeron effects are analyzed for elastic pp scattering and calculations for spin-dependent differential cross sections, analyzing power and double-spin correlation parameters are carried out for the energy range of the Relativistic Heavy Ion Collider (RHIC) at BNL. In this energy range, [Formula: see text], the structure of pomeron–proton coupling can be measured at RHIC with colliding polarized proton beams.

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