| 9 |
|
Carlo simulations can be minimized by using real events as the background |
| 10 |
|
training sample. As the QCD di--jet production rate is many orders of magnitude |
| 11 |
|
larger than that of tau leptons, it is relatively straightforward to obtain a |
| 12 |
< |
pure background sample to use in training with early CMS datasets. |
| 12 |
> |
pure background training sample with early CMS datasets. |
| 13 |
|
|
| 14 |
+ |
The relatively long lifetime of the tau lepton ($c\tau = 87\mu$m) allows |
| 15 |
+ |
potential discrimination against quark and gluon jets using displaced vertex |
| 16 |
+ |
information. A feasibility study is planned to determine if adding vertex |
| 17 |
+ |
related observables could improve the discrimination performance. |
