Search for New π⁰-like Particles Produced in Association with a τ-lepton Pair

dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorLees, J. P.en_US
dc.contributor.authorPoireau, V.en_US
dc.contributor.authorTisserand, V.en_US
dc.contributor.authorGrauges, E.en_US
dc.contributor.authorPalano, A.en_US
dc.contributor.authorEigen, G.en_US
dc.contributor.authorStugu, B.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorBaBar Collaborationen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.date.accessioned2015-02-16T22:51:36Z
dc.date.available2015-02-16T22:51:36Z
dc.date.created2014-12-23en_US
dc.date.issued2014-12-23en_US
dc.description.abstractWe report on a search in e⁺e⁻ annihilations for new π⁰-like particles produced in association with a τ-lepton pair. These objects, with a similar mass and similar decay modes to π⁰ mesons, could provide an explanation for the non-asymptotic behavior of the pion-photon transition form factor observed by the BABAR Collaboration. No significant signal is observed, and limits on the production cross section at the level of 73 fb or 370 fb, depending on the model parameters, are determined at 90% confidence level. These upper limits lie below the cross section values needed to explain the BABAR form factor data.en_US
dc.identifier.bibliographicCitationLees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2014. "Search for new π⁰-like particles produced in association with a τ-lepton pair." Physical Review D - Particles, Fields, Gravitation and Cosmology 90(11), doi:10.1103/PhysRevD.90.112011en_US
dc.identifier.issn1550-7998en_US
dc.identifier.issue11en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4325
dc.identifier.volume90en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.90.112011
dc.rights© 2014 American Physical Societyen_US
dc.sourcePhysical Review D - Particles, Fields, Gravitation and Cosmology
dc.subjectPionsen_US
dc.subjectLeptons (Nuclear physics)en_US
dc.subjectTauonsen_US
dc.subjectStates (Physics)en_US
dc.subjectStandard model (Nuclear physics)en_US
dc.titleSearch for New π⁰-like Particles Produced in Association with a τ-lepton Pairen_US
dc.typeTexten_US
dc.type.genreArticleen_US

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