Preliminary Studies Concerning Delta Gamma Bs Measurements in Proton
Antiproton Collisions at sqrt(s)=2.0 TeV.

CDF Thesis

M.Martin

Abstract
========


Studies pertaining to a measurement of Delta Gamma B_s at CDF Run II
are presented. The emphasis of the work is on the systematic effects
of the impact parameter cut in the level 2 trigger on the observed B_s
lifetime distribution. The mode chosen to investigate this effect is:

B_s -> Ds pi, where Ds->phi pi, and phi->K+ K-

A monte-carlo study of the B_s lifetime from a subset of the two track
multi-body trigger is made with comparable statistics to run IIa. The
precision is:

delta(lambda) = (+0.062)(-0.058)(stat) ps +- 0.023 ps (syst1) + 0.059 ps (syst2)

where lambda is the average B_s lifetime.

Posted to /cdf/pub/thesis/cdf6103_deltaGamStud.ps
    http://www-cdf.fnal.gov/thesis/cdf6103_deltaGamStud.ps

Posted by msmartin@cdfsga