Determination of the pion-nucleon interaction coupling constant from scattering experiments using dispersion relations

1957 ◽  
Vol 5 (5) ◽  
pp. 1305-1315 ◽  
Author(s):  
G. Puppi ◽  
A. Stanghellini
Keyword(s):  
Dispersion Relations ◽  
Coupling Constant ◽  
Nucleon Interaction ◽  
Pion Nucleon

PWA OF πN SCATTERING WITH FIXED-t DISPERSION RELATIONS

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1810-1813
Author(s):  
PEKKO PIIROLA ◽  
M. E. SAINIO
Keyword(s):  
Data Base ◽  
Forward Direction ◽  
Dispersion Relations ◽  
Data Sets ◽  
Coupling Constant ◽  
Partial Waves ◽  
Scattering Measurements ◽  
Pion Nucleon ◽  
Good Agreement

The πN scattering measurements from last couple of decades are not in very good agreement with each other. In fact, using the different data sets one finds different values for the pion-nucleon coupling constant. An analysis with theoretical constraints is the only way to produce accurate partial waves. In this analysis, the fixed-t dispersion relations are used to ensure analyticity in the invariant amplitudes and to decrease the effects of inaccuracies in the data base. Pietarinen's expansion is the method used to enforce the dispersion constraints. The strength of the analyticity constraints is illustrated with C± amplitudes in the forward direction.

scholarly journals Determination of the pion-nucleon coupling constant and scattering lengths

2002 ◽  
Vol 66 (1) ◽  
Author(s):  
T. E. O. Ericson ◽  
B. Loiseau ◽  
A. W. Thomas
Keyword(s):  
Coupling Constant ◽  
Pion Nucleon ◽  
Scattering Lengths

Determination of NΛK coupling constant from KN dispersion relations

1966 ◽  
Vol 21 (2) ◽  
pp. 229-231 ◽  
Author(s):  
M. Lusignoli ◽  
M. Restignoli ◽  
G.A. Snow ◽  
G. Violini
Keyword(s):  
Dispersion Relations ◽  
Coupling Constant
Sign in / Sign up

Export Citation Format

Share Document