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dc.date.accessioned 2019-07-15T16:02:13Z
dc.date.available 2019-07-15T16:02:13Z
dc.date.issued 1999-10-21
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/78131
dc.description.abstract We measure the masses, decay widths and relative production rate of orbitally excited B mesons using 1.25 million hadronic Z decays recorded by the L3 detector. B-meson candidates are inclusively reconstructed and combined with charged pions produced at the primary event vertex. An excess of events above the expected background in the Bπ mass spectrum in the region 5.6–5.8 GeV is interpreted as resulting from the decay B∗∗u,d→B(∗)π), where B∗∗u,d denotes a mixture of l = 1 B-meson states containing a u or a d quark. A fit to the mass spectrum yields the masses and decay widths of the B1* and B2* spin states, as well as the branching fraction for the combination l = 1 states. In addition, evidence is presented for the existence of an excited B-meson state or mixture of states in the region 5.9–6.0 GeV. en
dc.format.extent 323-334 es
dc.language en es
dc.subject spectroscopy en
dc.subject Física es
dc.subject B mesons en
dc.subject Z decays en
dc.subject L3 detector es
dc.title Measurement of the spectroscopy of orbitally excited B mesons at LEP en
dc.type Articulo es
sedici.identifier.other https://doi.org/10.1016/S0370-2693(99)01067-9
sedici.identifier.issn 0370-2693 es
sedici.creator.person Dova, María Teresa es
sedici.creator.person L3 Collaboration es
sedici.subject.materias Ciencias Exactas es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Exactas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physics Letters B es
sedici.relation.journalVolumeAndIssue vol. 465, no. 1–4 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)