par Abreu, Pedro;Bertrand, Daniel 
;Bricman, Charles ;Cao, Futian;Chen, Max;Deghorain, A.;De Brabandere, S.;De Clercq, Catherine;Herquet, Philippe ;Hoorelbeke, S.;Huet, Kathy;Lefebure, Véronique ;Lemonne, Jacques ;Tomaradze, A.;Vander Velde, Catherine ;Van Doninck, Walter;Verbeure, F;Wickens, John H. ; [et al.]
Référence Zeitschrift für Physik. C, Particles and fields, 72, 1, page (17-30)
Publication Publié, 1996-03
;Bricman, Charles ;Cao, Futian;Chen, Max;Deghorain, A.;De Brabandere, S.;De Clercq, Catherine;Herquet, Philippe ;Hoorelbeke, S.;Huet, Kathy;Lefebure, Véronique ;Lemonne, Jacques ;Tomaradze, A.;Vander Velde, Catherine ;Van Doninck, Walter;Verbeure, F;Wickens, John H. ; [et al.]Référence Zeitschrift für Physik. C, Particles and fields, 72, 1, page (17-30)
Publication Publié, 1996-03
Article révisé par les pairs
| Résumé : | A measurement of the mass difference, Δmd, between the two physical Bd0 states has been obtained from the analysis of the impact parameter distribution of a lepton emitted at large transverse momentum (pt) relative to the jet axis and from the analysis of the flight distance distribution of secondary vertices tagged by either a high pt lepton or an identified kaon. In the opposite hemisphere of the event, the charge of the initial quark has been evaluated using a high pt lepton, a charged kaon or the mean jet charge. With 1.7 million hadronic Z0 decays recorded by DELPHI between 1991 and 1993, Δmd is found to be: {Mathematical expression}. © 1996 Springer-Verlag. |
