Low-Energy $Λ-\p$ Scattering Parameters from the $pp \to pK^+Λ$ Reaction

J. T. Balewski; A. Budzanowski; C. Goodman; D. Grzonka; M. Hofmann; L. Jarczyk; A. Khoukaz; K. Kilian; T. Lister; P. Moskal; W. Oelert; I. A. Pellmann; C. Quentmeier; R. Santo; G. Schepers; T. Sefzick; S. Sewerin; J. Smyrski; A. Strzałkowski; C. Thomas; C. Wilkin; M. Wolke; P. Wüstner; D. Wyrwa

doi:10.1007/s100500050095

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Low-Energy $Λ-\p$ Scattering Parameters from the $pp \to pK^+Λ$ Reaction

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Abstract

Constraints on the spin-averaged $Λp$ scattering length and effective range have been obtained from measurements of the $pp\to pK^+Λ$ reaction close to the production threshold by comparing model phase-space Dalitz plot occupations with experimental ones. The data fix well the position of the virtual bound state in the $Λp$ system. Combining this with information from elastic $Λp$ scattering measurements at slightly higher energies, together with the fact that the hyperdeuteron is not bound, leads to a new determination of the low energy $Λp$ scattering parameters.

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J. T. Balewski, A. Budzanowski, C. Goodman, D. Grzonka, M. Hofmann, L. Jarczyk, A. Khoukaz, K. Kilian, T. Lister, P. Moskal, W. Oelert, I. A. Pellmann, C. Quentmeier, R. Santo, G. Schepers, T. Sefzick, S. Sewerin, J. Smyrski, A. Strzałkowski, C. Thomas, C. Wilkin, M. Wolke, P. Wüstner, D. Wyrwa. 1998-03-13. Low-Energy $Λ-\p$ Scattering Parameters from the $pp \to pK^+Λ$ Reaction. https://doi.org/10.1007/s100500050095

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