Show simple item record

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.date.accessioned2015-08-28T20:37:45Z
dc.date.available2015-08-28T20:37:45Z
dc.date.created2015-04-29en_US
dc.date.issued2015-04-29en_US
dc.identifier.issn1079-7114en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4584
dc.description.abstractWe present a search for a neutral, long-lived particle L that is produced in e⁺e⁻ collisions and decays at a significant distance from the e⁺e⁻ interaction point into various flavor combinations of two oppositely charged tracks. The analysis uses an e⁺e⁻ data sample with a luminosity of 489.1  fb⁻¹ collected by the BABAR detector at the ϒ(4S), ϒ(3S), and ϒ(2S) resonances and just below the ϒ(4S). Fitting the two-track mass distribution in search of a signal peak, we do not observe a significant signal, and set 90% confidence level upper limits on the product of the L production cross section, branching fraction, and reconstruction efficiency for six possible two-body L decay modes as a function of the L mass. The efficiency is given for each final state as a function of the mass, lifetime, and transverse momentum of the candidate, allowing application of the upper limits to any production model. In addition, upper limits are provided on the branching fraction ℬ(B→X₈L), where X₈ is a strange hadronic system.;en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevLett.114.171801
dc.rights©2015 American Physical Societyen_US
dc.sourcePhysical Review Letters
dc.subjectElectronsen_US
dc.subjectMesonsen_US
dc.subjectBranching fractions (Nuclear physics)en_US
dc.titleSearch for Long-Lived Particles in e⁺e⁻ Collisionsen_US
dc.typeTexten_US
dc.type.genreArticleen_US
dc.identifier.bibliographicCitationJ. P. Lees, V. Poireau, V. Tisserand, et al. 2015. "Search for Long-Lived Particles in e⁺e⁻ Collisions" Physical Review Letters 114(17), doi:10.1103/PhysRevLett.114.171801en_US
dc.identifier.volume114en_US
dc.identifier.issue17en_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.Scopus56366505900 (Lou, X.)en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record