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Pion-nucleon coupling constant from the analysis of depolarization data on nucleon-nucleon scattering

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Il Nuovo Cimento (1955-1965)

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

  1. G. F. Chew:Phys. Rev.,112, 1380 (1958);P. Cziffra andM. J. Moravcsik:Phys. Rev.,116, 226 (1959).

    Article  MathSciNet  ADS  Google Scholar 

  2. There are reasons to prefer extrapolation to the backward pole; see (1,2).

  3. A. Ashmore, W. H. Range, R. T. Taylor, B. M. Townes, L. Castillejo andR. F. Peierls:Nucl. Phys.,36, 258 (1962).

    Article  Google Scholar 

  4. E. H. Thorndike:Phys. Rev.,127, 251 (1962).

    Article  ADS  Google Scholar 

  5. C. F. Hwang, T. R. Ophel, E. H. Thorndike andR. Wilson:Phys. Rev.,119, 352 (1960).

    Article  ADS  MATH  Google Scholar 

  6. J. N. Palmieri, A. M. Cormack, N. F. Ramsey andR. Wilson:Ann. Phys.,5, 299 (1958).

    Article  ADS  MATH  Google Scholar 

  7. A. E. Taylor, E. Wood andL. Bird:Nucl. Phys.,16, 320 (1960).

    Article  Google Scholar 

  8. L. Bird, P. Christmas, A. E. Taylor andE. Wood:Nucl. Phys.,27 586 (1961).

    Article  Google Scholar 

  9. R. K. Hobbie andD. Miller:Phys. Rev.,120, 2201 (1960).

    Article  ADS  Google Scholar 

  10. P. M. Patel, A. Carroll, N. Strax andD. Miller:Phys. Rev. Lett.,8, 491 (1962).

    Article  ADS  Google Scholar 

  11. See for exampleM. H. MacGregor, M. J. Moravcsik andH. P. Stapp:Ann. Rev. Nucl. Sci.,10, 291 (1960). We draw attention to an error of sign in formula 2.3 forM.

    Article  ADS  Google Scholar 

  12. See for exampleP. G. Guest:Numerical Methods of Curve Fitting (Cambridge, 1961);P. G. Cziffra andM. J. Moravcsik:A Practical Guide to the Method of Least Squares, UCRL-8523 Rev. (1959).

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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

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