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Reanalysis of pion-pion phase shifts from K -> pi pi decays

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dc.contributor.author	Cirigliano, Vincenzo
dc.contributor.author	Ecker, Gerhard
dc.contributor.author	Pich Zardoya, Antonio
dc.date.accessioned	2015-02-27T11:11:51Z
dc.date.available	2015-02-27T11:11:51Z
dc.date.issued	2009
dc.identifier.citation	Cirigliano, Vincenzo Ecker, Gerhard Pich Zardoya, Antonio 2009 Reanalysis of pion-pion phase shifts from K -> pi pi decays Physics Letters B 679 5 445 448
dc.identifier.uri	http://hdl.handle.net/10550/42505
dc.description.abstract	We re-investigate the impact of isospin violation for extracting the s-wave pi pi scattering phase shift difference delta(0)(M(K)) - delta(2)(M(K)) from K -> pi pi decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference delta(0)(M(K)) - delta(2)(M(K)) = (52.5 +/- 0.8(exp) +/- 2.8(theor))degrees.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 2009, vol. 679, num. 5, p. 445-448
dc.subject	Física
dc.title	Reanalysis of pion-pion phase shifts from K -> pi pi decays
dc.type	journal article	es_ES
dc.date.updated	2015-02-27T11:11:51Z
dc.identifier.doi	10.1016/j.physletb.2009.08.027
dc.identifier.idgrec	056328
dc.rights.accessRights	open access	es_ES