Summary
A search is made of the value of the pion-nucleon constant obtained by extrapolating the quantityσ(1−D) to the one-pion-exchange pole using three different sets ofD(θ) data: HarwellD data at 143 MeV (p-p), HarvardD data at 142 MeV (p-p) andD data byPatel et al. at 128 MeV (n-p). Theg 2 value obtained is fairly satisfactory in the first case (g 2=14.86±2.46), decidely bad in the second (g 2⋍23.23±4.34) and, as expected, rather crude in the third (g 2⋍24.65±10.97).
Riassunto
Viene ricercato il valore della costante di accoppiamento pione-nucleone estrapolando la quantitàσ(1−D) dello scattering nucleone-nucleone fino al polo di scambio di un pione usando tre diverse fonti per i dati diD(θ): dati di Harwell a 143 MeV (p-p), dati di Harvard a 142 MeV (p-p) e dati di Patelet al. a 128 MeV (n-p). Il valore dig 2 ottenuto è abbastanza soddisfacente nel primo caso (g 2=14.86±2.46), decisamente cattivo nel secondo (g 2⋍23.23+4.34) e, come era da attendersi, piuttosto grossolano nel terzo (g 2⋍24.65+10.97).
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References
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This work has been done partially under the auspices and with financial support of EURATOM.
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Cirelli, R., Stabilini, G. Pion-nucleon coupling constant from the analysis of depolarization data on nucleon-nucleon scattering. Nuovo Cim 32, 141–147 (1964). https://doi.org/10.1007/BF02732598
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DOI: https://doi.org/10.1007/BF02732598