The real part of the proton-proton diffraction amplitude and the energy dependence of the overlap functions

1975 ◽  
Vol 89 (1) ◽  
pp. 93-108 ◽  
Author(s):  
W. Grein ◽  
R. Guigas ◽  
P. Kroll

Differential cross-sections for p-p and p-d elastic scattering have been measured at N. A. L. for 80 < s < 600 GeV 2 in the four-momentum transfer range 0.001 < | t | < 0.15 (GeV/ c ) 2 . Preliminary values are given for the slope parameters in the diffraction region and for the ratio of the real to the imaginary scattering amplitude. The energy dependence of these parameters is discussed.


Author(s):  
C. BOURRELY ◽  
J. SOFFER ◽  
N. N. KHURI ◽  
ANDRÉ MARTIN ◽  
T. T. WU

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
V. A. Okorokov

The diffraction slope parameter is investigated for elastic proton-proton and proton-antiproton scattering based on all the available experimental data at low and intermediate momentum transfer values. Energy dependence of the elastic diffraction slope is approximated by various analytic functions. The expanded “standard” logarithmic approximations with minimum number of free parameters allow description of the experimental slopes in all the available energy range reasonably. The estimations of asymptotic shrinkage parameterαP′are obtained for various|t|domains based on all the available experimental data. Various approximations differ from each other both in the low energy and very high energy domains. Predictions for diffraction slope parameter are obtained for elastic proton-proton scattering from NICA up to future collider (FCC/VLHC) energies, for proton-antiproton elastic reaction in FAIR energy domain for various approximation functions.


1985 ◽  
Vol 32 (3) ◽  
pp. 575-585 ◽  
Author(s):  
J. Bystricky ◽  
P. LaFrance ◽  
F. Lehar ◽  
F. Perrot ◽  
P. Winternitz

1975 ◽  
Vol 84 (2) ◽  
pp. 269-305 ◽  
Author(s):  
A.M. Rossi ◽  
G. Vannini ◽  
A. Bussière ◽  
E. Albini ◽  
D. D'Alessandro ◽  
...  

1973 ◽  
Vol 44 (1) ◽  
pp. 112-118 ◽  
Author(s):  
U. Amaldi ◽  
R. Biancastelli ◽  
C. Bosio ◽  
G. Matthiae ◽  
J.V. Allaby ◽  
...  

1984 ◽  
Vol 62 (4) ◽  
pp. 330-337 ◽  
Author(s):  
S. Krasznovszky ◽  
I. Wagner

The method of Novero–Predazzi is applied to a new ansatz with three constraints. Hadronic production cross sections σn(s) satisfying Koba–Nielsen–Olesen (KNO)-like constraints are determined; σn(s) and [Formula: see text] automatically have the KNO scaling property. The multiplicity distribution Pn obtained is identical with the empirical formula used by Bozóki et al. The generalization of the method is investigated for more than three constraints. Assuming a given energy dependence of the parameter in the KNO function, we find that all calculated higher moments ck of the KNO function are in excellent agreement with the observed values of ck – s for proton–proton (pp) interactions at Serpukhov, the Fermi National Accelerator Laboratory (FNAL), and intersecting storage rings' (ISR) energies.A zero parameter empirical formula is presented, which gives good results at a 95% confidence level for pp interactions. This KNO function describes the multiplicity distributions e+e− at positron–electron tandem ring accelerator (PETRA) energies. We give a dynamical ansatz leading to this KNO function within the framework of a parton model.


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