First observation and study of the K± → π±π0e+e− decay
NAGIOS: RODERIC FUNCIONANDO

First observation and study of the K± → π±π0e+e− decay

DSpace Repository

First observation and study of the K± → π±π0e+e− decay

Show simple item record

dc.contributor.author The NA48/2 Collaboration
dc.contributor.author Batley, J. R.
dc.contributor.author Fiorini, Luca
dc.date.accessioned 2020-06-10T08:30:39Z
dc.date.available 2020-06-10T08:30:39Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/10550/74969
dc.description.abstract The NA48/2 experiment at CERN reports the first observation of the K±→π±π0e+e− decay from an exposure of 1.7×1011 charged kaon decays recorded in 2003-2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR(K±→π±π0e+e−)=(4.24±0.14)×10−6. The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on chiral perturbation theory. Several P- and CP-violating asymmetries are also evaluated.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 2019, vol. 788, p. 552-561
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source The NA48/2 Collaboration Batley, J. R. Fiorini, Luca 2019 First observation and study of the K± → π±π0e+e− decay Physics Letters B 788 552 561
dc.subject Partícules (Física nuclear)
dc.subject Violació CP (Física nuclear)
dc.title First observation and study of the K± → π±π0e+e− decay
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-06-10T08:30:40Z
dc.identifier.doi https://doi.org/10.1016/j.physletb.2018.11.046
dc.identifier.idgrec 139431

View       (502.3Kb)

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search

Browse

Statistics