Speaker
Christoph Nageli
(Eidgenoessische Tech. Hochschule Zuerich (CH))
Description
A Monte Carlo study will be presented to quantify the impact of the z resolution of the pixel detector to a new physics search.
The choice of the pixel shape and size in the r-\phi and z-directions results in different position resolutions, that in turn
influence the selection power for the analysis of a certain physics channel. The presented study illustrates the effect of the pixel z
resolution on signal and background candidates in the case of the search for the rare decay B_s \to \mu\mu. Within the framework of the
SM this decay channel is expected at the level of \sim 10^{-9} and therefore requires a very high background rejection ratio to reach
the sensitivity necessary to observe a signal. The study will compare and illustrate the physics performance of this rare decay for different
scenarios.
Author
Christoph Nageli
(Eidgenoessische Tech. Hochschule Zuerich (CH))
Co-author
Roland Horisberger
(Paul Scherrer Institut (CH))
