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http://hdl.handle.net/10261/9122
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dc.contributor.author | Gámiz, Elvira | en_US |
dc.contributor.author | Prades, Joaquim | en_US |
dc.contributor.author | Scimemi, Ignazio | en_US |
dc.date.accessioned | 2008-12-10T12:24:35Z | - |
dc.date.available | 2008-12-10T12:24:35Z | - |
dc.date.issued | 2007-01-26 | en_US |
dc.identifier.citation | European Physical Journal C 50(2): 405-422 (2007) | en_US |
dc.identifier.issn | 1434-6044 | en_US |
dc.identifier.uri | http://hdl.handle.net/10261/9122 | - |
dc.description | 18 pages, 7 figures.-- PACS nrs.: 13.25.Es; 12.39.Fe; 13.75.Lb.-- ISI Article Identifier: 000245431700012.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0602023 | en_US |
dc.description | Printed version published in Apr 2007. | - |
dc.description.abstract | We present the analytical results for the K -> 3π final state interaction phases at next-to-leading order (NLO) in CHPT. We also study the recent proposal of Cabibbo to measure the ππ scattering lengths combination a(0)-a(2) from the cusp effect in the π(0)π(0) energy spectrum at threshold for K+ -> π(0)π(0)π(+) and K-L -> π(0)π(0)π(0), and we give the relevant formulas to describe it at NLO. We estimate the theoretical uncertainty of the a(0)-a(2) determination at NLO in our approach and obtain the result that it is not smaller than 5% if added quadratically and 7% if added linearly, for K+ -> π(0)π(0)π(+). One gets similar theoretical uncertainties if the neutral K-L -> π(0)π(0)π(0) decay data below threshold are used instead. For this decay, there are very large theoretical uncertainties above threshold due to cancellations, and data above threshold cannot be used to get the scattering lengths. We do not include isospin corrections apart from two-pion phase space factors which are physical. We compare our results for the cusp effect with those due to Cabibbo and Isidori. | en_US |
dc.description.sponsorship | This work has been supported in part by European Commission (EC) RTN Network EURIDICE Contract No. HPRN-CT2002-00311 (J.P. and I.S.), the Hadron Physics I3 Project (EC) Contract No. RII3-CT-2004-506078 (E.G.), by MEC (Spain) and FEDER (EC) Grant Nos. FPA2003-09298-C02-01 (J.P.) and FPA2004-00996 (I.S.), and by Junta de Andalucía Grants No. P05-FQM-101 (E.G. and J.P.) and P05- FQM-347 (J.P.). E.G. is indebted to the EC for the Marie Curie Fellowship No. MEIF-CT-2003-501309. I.S. wants to thank the Departament d’ECM, Facultat de Física, Universitat de Barcelona (Spain), for kind hospitality. | - |
dc.format.extent | 2373 bytes | - |
dc.format.mimetype | text/plain | - |
dc.language.iso | eng | en_US |
dc.publisher | Springer Nature | en_US |
dc.publisher | Società Italiana di Fisica | - |
dc.relation.ispartofseries | IFIC/05-67 | - |
dc.rights | openAccess | en_US |
dc.subject | Chiral perturbation theory | en_US |
dc.subject | π-π scattering | en_US |
dc.subject | Isospin breaking | en_US |
dc.subject | Virtual photons | en_US |
dc.subject | [PACS] Decays of K mesons | en_US |
dc.subject | [PACS] Chiral Lagrangians | en_US |
dc.subject | [PACS] Meson-meson interactions | en_US |
dc.title | K -> 3π final state interactions at NLO in CHPT and Cabibbo's proposal to measure a(0)-a(2) | en_US |
dc.type | artículo | en_US |
dc.identifier.doi | 10.1140/epjc/s10052-006-0201-7 | - |
dc.description.peerreviewed | Peer reviewed | en_US |
dc.relation.publisherversion | http://dx.doi.org/10.1140/epjc/s10052-006-0201-7 | en_US |
dc.identifier.e-issn | 1434-6052 | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
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0602023v4.pdf | 391,15 kB | Adobe PDF | Visualizar/Abrir |
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