Two-variable expansions and p¯n-->3π annihilations at rest

Hicks, H.R.; Shukre, C.S.; Winternitz, P.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5213

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DC Field	Value	Language
dc.contributor.author	Hicks, H.R.	-
dc.contributor.author	Shukre, C.S.	-
dc.contributor.author	Winternitz, P.	-
dc.date.accessioned	2012-08-06T09:51:36Z	-
dc.date.available	2012-08-06T09:51:36Z	-
dc.date.issued	1973	-
dc.identifier.citation	Physical Review D, 1973, Vol.7, p2659-2667	en
dc.identifier.issn	1550-7998	-
dc.identifier.issn	1550-2368(Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/5213	-
dc.description	Restricted Access.	en
dc.description.abstract	The experimental Dalitz plot for p¯n-->π+π-π- annihilations at rest is analyzed, using previously suggested two-variable expansions of decay amplitudes, based on the representation theory of the group O(4). A fair fit to the Dalitz plot is obtained by minimizing the χ2 function, assuming that the annihilation proceeds from a protium state of definite (but unspecified) angular momentum J (or from several such states). Fits with 2, 4, 6, and 9 free parameters are considered, the values of the parameters are essentially stable with respect to the "cutoff" of the expansion, and the solutions are unique. The fit is purely kinematical, in that no assumptions are made about the initial and final state or the annihilation dynamics. An analysis of the contribution of various parts of the Dalitz plot to the over-all χ2 suggests that the fit would be considerably improved by including, e.g., ρ- and f-meson final-state resonances explicitly. We compare the O(4) expansions with a power-series expansion in Dalitz-Fabri variables and also with various models that have been recently applied, in particular the Veneziano model and its generalizations and various final-state-interaction models.	en
dc.language.iso	en	en
dc.publisher	American Institute of Physics.	en
dc.relation.uri	http://adsabs.harvard.edu/abs/1973PhRvD...7.2659H	en
dc.relation.uri	http://dx.doi.org/10.1103/PhysRevD.7.2659	en
dc.rights	1973 American Institute of Physics	en
dc.title	Two-variable expansions and p¯n-->3π annihilations at rest	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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