The European Physical Journal A

ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)

Table of Contents

Abstract Volume 2 Issue 1 (1998) pp 99-104

hadron physics: Low-energy <Lambda>-p scattering parameters from the pp -> pK⁺<Lambda> Reaction

J.T. Balewski (1)(2), A. Budzanowski (1), C. Goodman (3), D. Grzonka (2), M. Hofmann (2), L. Jarczyk (4), A. Khoukaz (5), K. Kilian (2), T. Lister (5), P. Moskal (2)(4), W. Oelert (2), I.A. Pellmann (2)(5), C. Quentmeier (5), R. Santo (5), G. Schepers (5), T. Sefzick (2), S. Sewerin (2), J. Smyrski (4), A. Strzalkowski (4), C. Thomas (5), C. Wilkin (6), M. Wolke (2), P. Wüstner (7), D. Wyrwa (2)(4)

(1) Institute of Nuclear Physics, Cracow, Poland
(2) IKP, Forschungszentrum Jülich, Germany
(3) IUCF, Bloomington, Indiana, USA
(4) Institute of Physics, Jagellonian University, Cracow, Poland
(5) IKP, Westfälische Wilhelms-Universität, Münster, Germany
(6) University College London, London WC1E 6BT, United Kingdom
(7) ZEL, Forschungszentrum Jülich, Germany

Received: 5 March 1998

Abstract: Constraints on the spin-averaged <Lambda>p scattering length and effective range have been obtained from measurements of the pp -> pK⁺<Lambda> 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 <Lambda>p system. Combining this with information from elastic <Lambda>p 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 <Lambda>p scattering parameters.

PACS: 12.38.Qk Experimental data - 13.85.Hd Inelastic scattering: many-particle final states - 25.40.Ve Other reactions above meson production thresholds (energies >400 MeV)

Communicated by B. Povh

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Online publication: May 27, 1998
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