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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F11%3A10105321%21RIV12-MSM-11320___
rdf:type
n13:Vysledek skos:Concept
rdfs:seeAlso
http://prd.aps.org/abstract/PRD/v84/i11/e114015
dcterms:description
Because of their small electromagnetic corrections, the isospin-breaking decays eta to 3 pi seem to be good candidates for extracting isospin-breaking parameters md-mu. This task is unfortunately complicated by large chiral corrections and the discrepancy between the experimentally measured values of the Dalitz parameters describing the energy dependence of the amplitudes of these decays and those predicted from chiral perturbation theory. We present two methods based on an analytic dispersive representation that use the information from the NNLO chiral result and the one from the measurement of the charged eta to 3 pi decay by KLOE together in a harmonized way in order to determine the value of the quark mass ratio R. Our final result is R= 37.7 +/- 2.2. Because of their small electromagnetic corrections, the isospin-breaking decays eta to 3 pi seem to be good candidates for extracting isospin-breaking parameters md-mu. This task is unfortunately complicated by large chiral corrections and the discrepancy between the experimentally measured values of the Dalitz parameters describing the energy dependence of the amplitudes of these decays and those predicted from chiral perturbation theory. We present two methods based on an analytic dispersive representation that use the information from the NNLO chiral result and the one from the measurement of the charged eta to 3 pi decay by KLOE together in a harmonized way in order to determine the value of the quark mass ratio R. Our final result is R= 37.7 +/- 2.2.
dcterms:title
Analytical dispersive construction of eta to 3 pi amplitude: First order in isospin breaking Analytical dispersive construction of eta to 3 pi amplitude: First order in isospin breaking
skos:prefLabel
Analytical dispersive construction of eta to 3 pi amplitude: First order in isospin breaking Analytical dispersive construction of eta to 3 pi amplitude: First order in isospin breaking
skos:notation
RIV/00216208:11320/11:10105321!RIV12-MSM-11320___
n13:predkladatel
n14:orjk%3A11320
n3:aktivita
n8:Z n8:P
n3:aktivity
P(LC527), Z(MSM0021620859)
n3:cisloPeriodika
114015
n3:dodaniDat
n16:2012
n3:domaciTvurceVysledku
n7:5695376 n7:1426508 n7:7367732
n3:druhVysledku
n20:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
185869
n3:idVysledku
RIV/00216208:11320/11:10105321
n3:jazykVysledku
n15:eng
n3:klicovaSlova
isospin breaking; eta decays; dispersive relations
n3:klicoveSlovo
n11:dispersive%20relations n11:isospin%20breaking n11:eta%20decays
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[85356B04B1E5]
n3:nazevZdroje
Physical Review D - Particles, Fields, Gravitation and Cosmology
n3:obor
n21:BE
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n10:LC527
n3:rokUplatneniVysledku
n16:2011
n3:svazekPeriodika
84
n3:tvurceVysledku
Novotný, Jiří Zdráhal, Martin Knecht, Marc Kampf, Karol
n3:wos
000298131100008
n3:zamer
n17:MSM0021620859
s:issn
1550-7998
s:numberOfPages
32
n22:doi
10.1103/PhysRevD.84.114015
n9:organizacniJednotka
11320