DOI: 10.1140/epjc/s2003-01183-7
Search for
oscillations and a measurement of
oscillations using events with an inclusively reconstructed vertex
The DELPHI Collaboration (Received: 6 November 2002 / Revised version: 19 February 2003 / Published online: 31 March 2003 )
Abstract
Neutral B meson oscillations in the
and
systems were studied using a sample of about 4.0 million
hadronic Z decays recorded by the DELPHI detector between 1992 and 2000.
Events with a high transverse momentum lepton were removed and
a sample of 770 k events with an inclusively reconstructed vertex
was selected.
The mass difference between the two physical states in the
system
was measured to be:

The following limit on the width difference of these states was also obtained:

As no evidence for


The corresponding sensitivity of this analysis is equal to 6.6 ps -1.
© Società Italiana di Fisica, Springer-Verlag 2003