Once and twice subtracted dispersion relations in the analysis of pi pi amplitudes

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dc.creatorKaminski, R.
dc.creatorGarcia-Martin, R.
dc.creatorPelaez, J. R.
dc.creatorYndurain, F. J.
dc.date2009-05-13
dc.date.accessioned2026-07-07T13:14:32Z
dc.date.available2026-07-07T13:14:32Z
dc.descriptionOnce and twice subtracted crossing symmetric dispersion relations applied to $ππ\to ππ$ scattering data are analyzed and compared. Both sets of dispersion relations can be used to test the $ππ$ amplitudes in low partial waves up to about 1 GeV. We show how once subtracted dispersion relations can provide stronger constraints for $ππ$ amplitudes than twice subtracted ones in the 400 to 1100 MeV range, given the same experimental input.
dc.description6 pages, to appear in proceedings of ExcitedQCD 09 workshop, 8-14 February 2009, Zakopane (Poland)
dc.identifierhttps://arxiv.org/abs/0905.2139
dc.identifierhttp://arxiv.org/abs/0905.2139
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/230236
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOnce and twice subtracted dispersion relations in the analysis of pi pi amplitudes
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