Description: Extraction of the K K¯ isovector scattering length from pp -> d K+ K¯0 data near threshold

This title appears in the Scientific Report : 2006

Extraction of the K K¯ isovector scattering length from pp -> d K+ K¯0 data near threshold

The results of a recent experiment measuring the reaction pp -> dK(+)K(0) near threshold are interpreted in terms of a spectator model that encapsulates the main features of the observed (K+K0) invariant mass distribution. A X 2 fit to this data leads to an imaginary part of the isovector scatter...

Personal Name(s):	Lemmer, R. H.
Contributing Institute:	Institut 3 (Theoretische Kernphysik); IKP-TH
Published in:	Physics letters / B, 633 (2006)
Imprint:	Amsterdam North-Holland Publ. 2006
DOI:	10.1016/j.physletb.2005.11.074
Document Type:	Journal Article
Research Program:	Physik der Hadronen und Kerne
Series Title:	Physics Letters B 633
Subject (ZB):	p p: exclusive reaction K: pair production threshold deuteron: spectator scattering amplitude a0(980) K anti-K: scattering length isovector parametrization channel cross section: mass numerical calculations interpretation of experiments: Juelich COSY PS p p > > deuteron anti-K0 K+
Link:	Get full text OpenAccess OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2005.11.074 in citations.
Please use the identifier: http://hdl.handle.net/2128/10615 in citations.

The results of a recent experiment measuring the reaction pp -> dK(+)K(0) near threshold are interpreted in terms of a spectator model that encapsulates the main features of the observed (K+K0) invariant mass distribution. A X 2 fit to this data leads to an imaginary part of the isovector scattering length in the KK channel of Im(a(1)) = -(0.63 +/- 0.24) fm. We then use the Flatte representation of the scattering amplitude to infer a value Re(a I) = - (0.02 +/- 0.02) fm for the real part under the assumption that scaling [V Baru, J. Haidenbauer, C. Hanhart, A. Kudryavtsev, U.G. Meissner, Eur. Phys. J. A 23 (2005) 523] is approximately satisfied. We show further that it is not possible to exclude the effects of pi(+)eta to (K+K0) channel coupling within the context of our model. (c) 2005 Elsevier B.V. All rights reserved.