scholarly journals Energy Dependence of the Dip in pp Elastic Scattering and the Pomeron Periphery

1977 ◽  
Vol 30 (3) ◽  
pp. 355 ◽  
Author(s):  
Mujahid Kamran ◽  
Mohammad Saleem
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Energy Dependence ◽  
Cross Section ◽  
Storage Ring ◽  
Differential Cross ◽  
Intersecting Storage Ring

It is shown that, at ISR (intersecting storage ring) energies, the energy dependence of the dip in the differential cross section for pp elastic scattering can be explained by the dual absorptive model with a peripheral pomeron.

scholarly journals pp Elastic Scattering and the Pomeron Periphery

1975 ◽  
Vol 28 (4) ◽  
pp. 365 ◽  
Author(s):  
Mohammad Saleem ◽  
Mohammad Rafique ◽  
Khalid L Mir ◽  
JS Mirza ◽  
SH Tirmazi
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Storage Ring ◽  
Differential Cross ◽  
Slope Parameter ◽  
Intersecting Storage Ring

It is shown that, in pp elastic scattering at ISR (intersecting storage ring) energies, a dip at t ~ -1�3 (GeV/c)2 and a bump at t ~ -2'0 (GeV/c)2 in the differential cross section, as well as a break at t ~ -0,1 (GeV/c)2 in the slope parameter, can be explained by a peripheral pomeron.

Differential cross-section measurements in positron–argon collisions

1996 ◽  
Vol 74 (7-8) ◽  
pp. 505-508 ◽  
Author(s):  
R. M. Finch ◽  
Á. Kövér ◽  
M. Charlton ◽  
G. Laricchia
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Coupling Effect ◽  
Channel Coupling ◽  
Scattering Cross

Differential cross sections for elastic scattering and ionization in positron–argon collisions as a function of energy (40–150 eV) are reported at 60°. Of particular interest is the energy range 55–60 eV, where earlier measurements by the Detroit group found a drop in the elastic-scattering cross section of a factor of 2. This structure has been tentatively attributed to a cross channel-coupling effect with an open inelastic-scattering channel, most likely ionization. Our results indicate that ionization remains an important channel over the same energy range and only begins to decrease at an energy above 60 eV.

Differential Cross Section Measurements for the Elastic Scattering of Protons byN14

1957 ◽  
Vol 105 (1) ◽  
pp. 210-212 ◽  
Author(s):  
C. R. Bolmgren ◽  
G. D. Freier ◽  
J. G. Likely ◽  
K. F. Famularo
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross

PROTON–4He ELASTIC SCATTERING AT ~ 1 GeV

2005 ◽  
Vol 14 (05) ◽  
pp. 787-798 ◽  
Author(s):  
Z. A. KHAN ◽  
MINITA SINGH
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Phase Variation ◽  
Glauber Model ◽  
Slight Improvement ◽  
Polarization Data ◽  
Eikonal Expansion ◽  
Rotation Function

Based on the (spin-independent) Sugar–Blanckenbecler eikonal expansion for the T-matrix, we parametrize the (spin-dependent) NN amplitude (SNN) which successfully describes the pp and pn elastic scattering observables at ~ 1 GeV up to the available momentum transfers. Using SNN, we calculate the differential cross-section, polarization, and spin-rotation function of ~ 1 GeV protons on 4 He within the framework of the Glauber model. The analysis also includes the phase variation in the NN amplitude. It is found that the use of SNN, in comparision with the usually parametrized one-term amplitude, improves the agreement with the experimental data. The introduction of a global phase variation provides only a slight improvement over the results with a constant phase. However, if we allow different phases in the central- and spin-dependent parts of the NN amplitude, the agreement with the polarization data improves further without affecting the differential cross-section results.

Polarization and Differential Cross Section for Elastic Scattering of 40-MeV Protons. II

1967 ◽  
Vol 156 (4) ◽  
pp. 1207-1218 ◽  
Author(s):  
M. P. Fricke ◽  
E. E. Gross ◽  
B. J. Morton ◽  
A. Zucker
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Mev Protons

scholarly journals The scattering of alpha particles by helium

1959 ◽  
Vol 251 (1265) ◽  
pp. 143-155 ◽  
Keyword(s):  
Elastic Scattering ◽  
Phase Shift ◽  
Differential Cross Section ◽  
Excitation Energy ◽  
Cross Section ◽  
Differential Cross ◽  
Incident Energy ◽  
Phase Shifts ◽  
Alpha Particles

In order to obtain information about the levels of even spin and parity of 8 Be at energies above 11 MeV, the differential cross-section for the α-particle-helium elastic scattering has been measured at a series of beam energies from 23·1 to 38·4 MeV, for many c.m.s. angles between 30 and 90°. Phase shifts up to L = 8 have been calculated for each energy. Combining these results with previous figures for lower energies, the phase shifts δ 0 , δ 2 and δ 4 are thus known as functions of incident energy from 0·15 MeV to 38·4 MeV. The behaviour of the phase shift δ 4 confirms the existence of a previously suggested level with I = 4 at an excitation energy of about 11·4 MeV in 8 Be. The phase shifts δ 6 and δ 8 are small, as expected if the rotational series of levels in 8 Be term inates with I = 4.

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