NAGIOS: RODERIC FUNCIONANDO

Unitarity and K(L) ---> pi0 gamma gamma

Repositori DSpace/Manakin

dc.contributor.author	Cohen, Andrew G.
dc.contributor.author	Ecker, Gerhard
dc.contributor.author	Pich Zardoya, Antonio
dc.date.accessioned	2015-02-25T12:54:08Z
dc.date.available	2015-02-25T12:54:08Z
dc.date.issued	1993
dc.identifier.citation	Cohen, Andrew G. Ecker, Gerhard Pich Zardoya, Antonio 1993 Unitarity and K(L) ---> pi0 gamma gamma Physics Letters B 304 3-4 347 352
dc.identifier.uri	http://hdl.handle.net/10550/42293
dc.description.abstract	We discuss the rare decay K(L) --> pi0gammagamma. Although the recently measured 2gamma-invariant-mass distribution is in quite good agreement with the lowest-order chiral perturbation theory prediction, there seems to be a discrepancy with the calculated branching ratio. We extend the previous computations to next-to-leading order, O(p6). The two dominant mechanisms at this order are emphasized: the two-pion intermediate state and vector meson exchange.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 1993, vol. 304, num. 3-4, p. 347-352
dc.subject	Física
dc.title	Unitarity and K(L) ---> pi0 gamma gamma
dc.type	journal article	es_ES
dc.date.updated	2015-02-25T12:54:08Z
dc.identifier.doi	10.1016/0370-2693(93)90307-4
dc.identifier.idgrec	081664
dc.rights.accessRights	open access	es_ES