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η→π^(0)γ γ decay within a chiral unitary approach revisited

(E-Prints Complutense)

Ficha

Título:
η→π^(0)γ γ decay within a chiral unitary approach revisited
Materia:
Física-Modelos matemáticos
Física matemática
Descripción:
In view of the recent experimental developments in η→π^(0)γ γ decay, and the fact that the Particle Data Group in the online edition of 2007 reports sizable changes of the radiative decay widths of vector mesons used as input in the theoretical calculations of E. Oset, J. R. Peláez, and L. Roca [Phys. Rev. D 67, 073013 (2003)], a reevaluation of the decay width of the in this channel has been done, reducing its uncertainty by almost a factor of 2. The new input of the Particle Data Group is used, and invariant mass distributions and total widths are compared with the most recent results from the AGS and MAMI experiments, and preliminary ones of KLOE. The agreement of the theory with the AGS and MAMI data is very good, both for the total rates and for the invariant mass distributions of the two photons.
Lengua:
en
Relación:
https://eprints.ucm.es/35223/
http://dx.doi.org/10.1103/PhysRevD.77.073001
10.1103/PhysRevD.77.073001
FIS2006-03438
RII3-CT-2004-506078
FPA2007-29115-E
FPA2005-02327
UCMCAM 910309
Autor/Productor:
Oset, E.
Peláez Sagredo, José Ramón
Roca, L.
Editor:
Amer Physical Soc
Derechos:
info:eu-repo/semantics/openAccess
Fecha:
2008-04
Tipo del recurso:
info:eu-repo/semantics/article
PeerReviewed
Formato:
application/pdf
Identificador del recurso:
https://eprints.ucm.es/35223/1/pelaezsagredo41libre.pdf

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    2. <dc:title>η→π^(0)γ γ decay within a chiral unitary approach revisited</dc:title>

    3. <dc:creator>Oset, E.</dc:creator>

    4. <dc:creator>Peláez Sagredo, José Ramón</dc:creator>

    5. <dc:creator>Roca, L.</dc:creator>

    6. <dc:subject>Física-Modelos matemáticos</dc:subject>

    7. <dc:subject>Física matemática</dc:subject>

    8. <dc:description>In view of the recent experimental developments in η→π^(0)γ γ decay, and the fact that the Particle Data Group in the online edition of 2007 reports sizable changes of the radiative decay widths of vector mesons used as input in the theoretical calculations of E. Oset, J. R. Peláez, and L. Roca [Phys. Rev. D 67, 073013 (2003)], a reevaluation of the decay width of the in this channel has been done, reducing its uncertainty by almost a factor of 2. The new input of the Particle Data Group is used, and invariant mass distributions and total widths are compared with the most recent results from the AGS and MAMI experiments, and preliminary ones of KLOE. The agreement of the theory with the AGS and MAMI data is very good, both for the total rates and for the invariant mass distributions of the two photons.</dc:description>

    9. <dc:publisher>Amer Physical Soc</dc:publisher>

    10. <dc:date>2008-04</dc:date>

    11. <dc:type>info:eu-repo/semantics/article</dc:type>

    12. <dc:type>PeerReviewed</dc:type>

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