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Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons

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Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Alemany Fernández, Reyes
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	García García, Carmen
dc.contributor.author	Gil Botella, Inés
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Navas Concha, Sergio
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Tortosa Martínez, Pablo
dc.contributor.author	Higón Rodríguez, Emilio
dc.date.accessioned	2014-03-28T11:54:00Z
dc.date.available	2014-03-28T11:54:00Z
dc.date.issued	2000
dc.identifier.citation	DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García C. Gil, I. Hernández Rey, Juan Jose Martínez Vidal, Fernando Navas, S. Salt Cairols, José, Tortosa Martínez, Pablo, Higón Rodríguez, Emilio 2000 Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons European Physical Journal C 18 2 229 252
dc.identifier.uri	http://hdl.handle.net/10550/33741
dc.description.abstract	Oscillations of B0s mesons have been studied in samples selected from about 3.5 million hadronic Z decays detected by DELPHI between 1992 and 1995. One analysis uses events in the exclusive decay channels: B0s -> Ds- pi+ or Ds- a1+ and B0s -> anti-D0 K- pi+ or anti-D0 K- a1+, where the D decays are completely reconstructed. In addition, B0s anti-B0s oscillations have been studied in events with an exclusively reconstructed Ds accompanied in the same hemisphere by a high momentum hadron of opposite charge. Combining the two analyses, a limit on the mass difference between the physical B0s states has been obtained: Delta(m_B0s) > 4.0 ps^{-1} at the 95% C.L. with a sensitivity of Delta(m_B0s) = 3.2 ps^{-1}. Using the latter sample of events, the B0s lifetime has been measured and an upper limit on the decay width difference between the two physical B0s states has been obtained: tau(B0s) = 1.53^{+0.16}_{-0.15}(stat.) +/- {0.07}(syst.) ps \Delta\Gamma(B0s)/\Gamma(B0s) < 0.69 at the 95% C.L. The combination of these results with those obtained using Ds+- lepton-+ sample gives: Delta(m_B0s) > 4.9 ps^{-1} at the 95% C.L. with a sensitivity of Delta(m_B0s) = 8.7 ps^{-1}. tau(B0s) = 1.46 +/- 0.11 ps and \Delta\Gamma(B0s)/\Gamma(B0s) < 0.45 at the 95% C.L.
dc.relation.ispartof	European Physical Journal C, 2000, vol. 18, num. 2, p. 229-252
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons
dc.type	journal article	es_ES
dc.date.updated	2014-03-28T11:54:01Z
dc.identifier.doi	10.1007/s100520000531
dc.identifier.idgrec	006724
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/s100520000531