Bounds on the imaginary parts of spin-0-spin-1/2 particle scattering amplitudes from experimental data and limited use of unitarity

1976 ◽  
Vol 13 (3) ◽  
pp. 603-615 ◽  
Author(s):  
I. A. Sakmar ◽  
S. K. Chan
Keyword(s):  
Experimental Data ◽  
Scattering Amplitudes ◽  
Particle Scattering

Dispersion Relations for Three-Particle Scattering Amplitudes. I

1966 ◽  
Vol 146 (4) ◽  
pp. 1130-1149 ◽  
Author(s):  
Morton Rubin ◽  
Robert Sugar ◽  
George Tiktopoulos
Keyword(s):  
Scattering Amplitudes ◽  
Dispersion Relations ◽  
Particle Scattering

scholarly journals Scalar isoscalar form factors for energies above 1 GeV

2019 ◽  
Vol 202 ◽  
pp. 06002
Author(s):  
Stefan Ropertz ◽  
Christoph Hanhart ◽  
Bastian Kubis
Keyword(s):  
Experimental Data ◽  
Scattering Amplitudes ◽  
Form Factors ◽  
Padé Approximants ◽  
High Accuracy ◽  
Data Description ◽  
Pade Approximants ◽  
Low Energies

We present a new parametrization for scattering amplitudes and form factors, which is consistent with high-accuracy dispersive representations at low energies but at the same time allows for a data description of higher mass resonances such as the f0(1500) and f0(2020). The formalism is general and thus can be applied to many decay processes. As an example we discuss the decay of $ \bar {B}_s^0 $ → J/ψππ(KK). From the amplitude fixed in a fit to the experimental data pole positions and residues are extracted via Padé approximants.

Direct reconstruction of pp elastic scattering amplitudes from experimental data between 0.83 and 2.7 GeV

1990 ◽  
Vol 51 (23) ◽  
pp. 2689-2716 ◽  
Author(s):  
C.D. Lac ◽  
J. Ball ◽  
J. Bystricky ◽  
J. Derégel ◽  
F. Lehar ◽  
...  
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Scattering Amplitudes

scholarly journals Normal Threshold Sheet Structure of Two-Particle Scattering Amplitudes

1965 ◽  
Vol 140 (4B) ◽  
pp. B1054-B1067 ◽  
Author(s):  
David J. Gross ◽  
John H. Schwarz
Keyword(s):  
Scattering Amplitudes ◽  
Particle Scattering ◽  
Normal Threshold ◽  
Sheet Structure
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