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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleMeasurement of the rare decay pi(0)-> e(+)e(-)pt_BR
dc.contributor.authorAbouzaid, Ept_BR
dc.contributor.authorArenton, Mpt_BR
dc.contributor.authorBarker, ARpt_BR
dc.contributor.authorBellantoni, Lpt_BR
dc.contributor.authorBellavance, Apt_BR
dc.contributor.authorBlucher, Ept_BR
dc.contributor.authorBock, GJpt_BR
dc.contributor.authorCheu, Ept_BR
dc.contributor.authorColeman, Rpt_BR
dc.contributor.authorCorcoran, MDpt_BR
dc.contributor.authorCox, Bpt_BR
dc.contributor.authorErwin, ARpt_BR
dc.contributor.authorEscobar, COpt_BR
dc.contributor.authorGlazov, Apt_BR
dc.contributor.authorGolossanov, Apt_BR
dc.contributor.authorGomes, RApt_BR
dc.contributor.authorGouffon, Ppt_BR
dc.contributor.authorHanagaki, Kpt_BR
dc.contributor.authorHsiung, YBpt_BR
dc.contributor.authorHuang, Hpt_BR
dc.contributor.authorJensen, DApt_BR
dc.contributor.authorKessler, Rpt_BR
dc.contributor.authorKotera, Kpt_BR
dc.contributor.authorLedovskoy, Apt_BR
dc.contributor.authorMcBride, PLpt_BR
dc.contributor.authorMonnier, Ept_BR
dc.contributor.authorNelson, KSpt_BR
dc.contributor.authorNguyen, Hpt_BR
dc.contributor.authorNiclasen, Rpt_BR
dc.contributor.authorPhillips, DGpt_BR
dc.contributor.authorPing, Hpt_BR
dc.contributor.authorQi, XRpt_BR
dc.contributor.authorRamberg, EJpt_BR
dc.contributor.authorRay, REpt_BR
dc.contributor.authorRonquest, Mpt_BR
dc.contributor.authorSantos, Ept_BR
dc.contributor.authorShields, Jpt_BR
dc.contributor.authorSlater, Wpt_BR
dc.contributor.authorSmith, Dpt_BR
dc.contributor.authorSolomey, Npt_BR
dc.contributor.authorSwallow, ECpt_BR
dc.contributor.authorToale, PApt_BR
dc.contributor.authorTschirhart, Rpt_BR
dc.contributor.authorVelissaris, Cpt_BR
dc.contributor.authorWah, YWpt_BR
dc.contributor.authorWang, Jpt_BR
dc.contributor.authorWhite, HBpt_BR
dc.contributor.authorWhitmore, Jpt_BR
dc.contributor.authorWilking, MJpt_BR
dc.contributor.authorWinstein, Bpt_BR
dc.contributor.authorWinston, Rpt_BR
dc.contributor.authorWorcester, ETpt_BR
dc.contributor.authorWorcester, Mpt_BR
dc.contributor.authorYamanaka, Tpt_BR
dc.contributor.authorZimmerman, EDpt_BR
dc.contributor.authorZukanovich, RFpt_BR
unicamp.author.emailedz@colorado.edupt_BR
unicamp.authorUniv Colorado, Boulder, CO 80309 USA Univ Arizona, Tucson, AZ 85721 USA Univ Calif Los Angeles, Los Angeles, CA 90095 USA Univ Estadual Campinas, BR-13083970 Campinas, SP, Brazil Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA Elmhurst Coll, Elmhurst, IL 60126 USA Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA Osaka Univ, Toyonaka, Osaka 5600043, Japan Rice Univ, Houston, TX 77005 USA Univ Sao Paulo, BR-05315970 Sao Paulo, Brazil Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA Univ Wisconsin, Madison, WI 53706 USApt_BR
dc.subject.wosBranching Ratiopt_BR
dc.subject.wosRadiative-correctionspt_BR
dc.subject.wosPi(0)->e(+)e(-)pt_BR
dc.subject.wosPi-0->e+ept_BR
dc.subject.wosFlightpt_BR
dc.description.abstractThe branching ratio of the rare decay pi(0)-> e(+)e(-) has been measured precisely, using the complete data set from the KTeV E799-II experiment at Fermilab. We observe 794 candidate pi(0)-> e(+)e(-) events using K-L -> 3 pi(0) as a source of tagged pi(0)s. The expected background is 52.7 +/- 11.2 events, predominantly from high e(+)e(-) mass pi(0)-> e(+)e(-)gamma decays. We have measured B(pi(0)-> e(+)e(-),(m(e)(+)e(-)/m(pi)(0))(2)> 0.95)=(6.44 +/- 0.25(stat)+/- 0.22(syst))x10(-8), which is above the unitary bound from pi(0)->gamma gamma and within the range of theoretical expectations from the standard model.pt
dc.relation.ispartofPhysical Review Dpt_BR
dc.relation.ispartofabbreviationPhys. Rev. Dpt_BR
dc.publisher.cityCollege Pkpt_BR
dc.publisher.countryEUApt_BR
dc.publisherAmerican Physical Socpt_BR
dc.date.issued2007pt_BR
dc.date.monthofcirculationJANpt_BR
dc.identifier.citationPhysical Review D. American Physical Soc, v. 75, n. 1, 2007.pt_BR
dc.language.isoenpt_BR
dc.description.volume75pt_BR
dc.description.issuenumber1pt_BR
dc.rightsabertopt_BR
dc.sourceWeb of Sciencept_BR
unicamp.cruespUSPpt_BR
dc.identifier.issn1550-7998pt_BR
dc.identifier.wosidWOS:000243896200011pt_BR
dc.identifier.doi10.1103/PhysRevD.75.012004pt_BR
dc.date.available2014-11-17T22:47:28Z
dc.date.available2015-11-26T16:47:20Z-
dc.date.accessioned2014-11-17T22:47:28Z
dc.date.accessioned2015-11-26T16:47:20Z-
dc.description.provenanceMade available in DSpace on 2014-11-17T22:47:28Z (GMT). No. of bitstreams: 1 WOS000243896200011.pdf: 254414 bytes, checksum: c8815662d2d6439b238813ef507c9584 (MD5) Previous issue date: 2007en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:47:20Z (GMT). No. of bitstreams: 2 WOS000243896200011.pdf: 254414 bytes, checksum: c8815662d2d6439b238813ef507c9584 (MD5) WOS000243896200011.pdf.txt: 25114 bytes, checksum: ae7a7a7e8064e6bd667c7305a9c6ba5b (MD5) Previous issue date: 2007en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/53424pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/53424
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/53424-
Appears in Collections:Unicamp - Artigos e Outros Documentos

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