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K ->pi pi phenomenology in the presence of electromagnetism

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dc.contributor.authorCirigliano, V
dc.contributor.authorDonoghue, JF
dc.contributor.authorGolowich, Eugene
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.date2023-09-22T21:54:01.000
dc.date.accessioned2024-04-26T20:02:53Z
dc.date.available2024-04-26T20:02:53Z
dc.date.issued2000-01-01
dc.descriptionThis is the pre-published version which is collected from arXiv. The published version is at http://epjc.edpsciences.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/epjc/abs/2000/22/epjc0530/epjc0530.html
dc.description.abstractWe describe the influence of electromagnetism on the phenomenology of $K \to \pi\pi$ decays. This is required because the present data were analyzed without inclusion of electromagnetic radiative corrections, and hence contain several ambiguities and uncertainties which we describe in detail. Our presentation includes a full description of the infrared effects needed for a new experimental analysis. It also describes the general treatment of final state interaction phases, needed because Watson's theorem is no longer valid in the presence of electromagnetism. The phase of the isospin-two amplitude ${\cal A}_2$ may be modified by $50 \to 100\%$. We provide a tentative analysis using present data in order to illustrate the sensitivity to electromagnetic effects, and also discuss how the standard treatment of $\epsilon' /\epsilon$ is modified.
dc.description.pages83-95
dc.identifier.urihttps://hdl.handle.net/20.500.14394/40536
dc.relation.ispartofEUROPEAN PHYSICAL JOURNAL C
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1114&context=physics_faculty_pubs&unstamped=1
dc.source.issue1
dc.source.issue18
dc.source.statuspublished
dc.subjectPhysics
dc.titleK ->pi pi phenomenology in the presence of electromagnetism
dc.typearticle
dc.typearticle
digcom.contributor.authorCirigliano, V
digcom.contributor.authorisAuthorOfPublication|email:donoghue@physics.umass.edu|institution:University of Massachusetts - Amherst|Donoghue, JF
digcom.contributor.authorisAuthorOfPublication|email:golowich@physics.umass.edu|institution:University of Massachusetts - Amherst|Golowich, Eugene
digcom.identifierphysics_faculty_pubs/115
digcom.identifier.contextkey1604673
digcom.identifier.submissionpathphysics_faculty_pubs/115
dspace.entity.typePublication
relation.isAuthorOfPublication9d915533-b4ee-450d-9263-00221b9013a2
relation.isAuthorOfPublication60042eb6-ec1f-49e3-a1a4-d15f78e76c2b
relation.isAuthorOfPublication.latestForDiscovery9d915533-b4ee-450d-9263-00221b9013a2
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