HADRON SPIN-FLIP AMPLITUDE AND SLOPE OF DIFFERENTIAL CROSS-SECTIONS

1999 ◽  
Vol 14 (03) ◽  
pp. 223-230 ◽  
Author(s):  
O. V. SELYUGIN
Keyword(s):  
Experimental Data ◽  
Cross Sections ◽  
Differential Cross ◽  
Scattering Amplitude ◽  
Previous Analysis ◽  
Differential Cross Sections ◽  
Spin Flip ◽  
Flip Amplitude

A possibility to obtain restrictions of the magnitude of the elastic spin-flip hadron scattering amplitude from accurately measured experimental data on the differential cross-sections of elastic hadron–hadron scattering is shown. Appropriate estimations confirm the previous analysis of experimental data at [Formula: see text] GeV and a probable contribution of the hadron spin-flip amplitude.

First measurement of the real part of appdouble-spin-flip amplitude

1987 ◽  
Vol 58 (11) ◽  
pp. 1084-1087 ◽  
Author(s):  
M. M. Gazzaly ◽  
G. Pauletta ◽  
N. Tanaka ◽  
B. Aas ◽  
H. Fujisawa ◽  
...  
Keyword(s):  
The Real ◽  
Spin Flip ◽  
Flip Amplitude

scholarly journals A Dual Absorptive Model for Backward Hadron Scattering

1974 ◽  
Vol 27 (5) ◽  
pp. 657
Author(s):  
M Rafique ◽  
M Saleem ◽  
Sanaullah Bhatti
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections ◽  
Dominant Contribution ◽  
Flip Amplitude

It is shown that a dual absorptive model can explain the dip structure of backward differential cross sections of hadronic processes. The polarizations in those backward processes in which the dominant contribution comes from non-flip amplitude are also found to be qualitatively consistent with experiment.

scholarly journals The effect of vacuum polarization on muon–proton scattering at small energies and angles

2002 ◽  
Vol 80 (1) ◽  
pp. 39-42
Author(s):  
A Gashi ◽  
G Rasche ◽  
W S Woolcock
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Vacuum Polarization ◽  
Proton Scattering ◽  
Photon Exchange ◽  
Exchange Approximation ◽  
Compact Expression ◽  
The One ◽  
Flip Amplitude

We give a compact expression for the unpolarized differential cross section for muon–proton scattering in the one-photon exchange approximation. The effect of adding the vacuum polarization amplitude to the no-spin-flip amplitude for one-photon exchange is calculated at small energies and scattering angles and is found to be negligible for present experiments. PACS No.: 13.6

Behavior of the spin-flip amplitude in high-energy proton-proton and pion-proton elastic scatterings

1979 ◽  
Vol 52 (3) ◽  
pp. 363-372 ◽  
Author(s):  
K. Hinotani ◽  
H. A. Neal ◽  
E. Predazzi ◽  
G. Walters
Keyword(s):  
High Energy ◽  
High Energy Proton ◽  
Proton Proton ◽  
Energy Proton ◽  
Spin Flip ◽  
Flip Amplitude

scholarly journals ENERGY DEPENDENCE OF THE POMERON SPIN-FLIP

1998 ◽  
Vol 13 (37) ◽  
pp. 3033-3038 ◽  
Author(s):  
B. Z. KOPELIOVICH ◽  
B. POVH
Keyword(s):  
Energy Dependence ◽  
Proton Structure Function ◽  
Theoretical Reason ◽  
Proton Structure ◽  
Spin Flip ◽  
Color Dipole ◽  
Nuclear Interference ◽  
Low X ◽  
Flip Amplitude ◽  
Coulomb Nuclear Interference

There is no theoretical reason to think that the spin-flip component of the Pomeron is zero. One can measure the spin-flip part using Coulomb-nuclear interference (CNI). Perturbative QCD calculations show that the spin-flip component is sensitive to the smallest quark separation in the proton, while the non-flip part probes the largest separation. According to HERA results on the proton structure function at very low x, the energy dependence of the cross-section correlates with the size of the color dipole. Analyzing the data from HERA we predict that the ratio of the spin-flip to non-flip amplitude grows with energy as r(s)∝(1/x)0.1-0.2, violating Regge factorization of the Pomeron.

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