| 5 |
|
are generated with the leading order (LO) event generators |
| 6 |
|
{\sl PYTHIA}~\cite{Sjostrand:2003wg}, {\sl ALPGEN} and {\sl COMPHEP}. |
| 7 |
|
To accommodate the next-to-leading (NLO) effects, constant $k$-factors are applied |
| 8 |
< |
except for the signal where a $p_T$-dependence has been taken into account |
| 9 |
< |
and some of the backgrounds, $e.g.$ $t\bar{t}$, $W+jets$, and $Z+jets$ samples, |
| 10 |
< |
officially produced with NLO effects taken into account. |
| 8 |
> |
except for the signal where a $p_T$-dependence has been taken into account. |
| 9 |
|
|
| 10 |
|
The $p_T$-dependent $k$-factor for the signal is estimated using |
| 11 |
|
the NLO cross section calculator {\sl MCFM}~\cite{Campbell:2005}. |
| 102 |
|
generator. |
| 103 |
|
\item $Z^0\gamma$: this process is calculated with {\sl PYTHIA}. |
| 104 |
|
\end{itemize} |
| 105 |
+ |
The background sources that have \Z bosons described above are simulated with the |
| 106 |
+ |
contribution from the virtual photon. |
| 107 |
|
|
| 108 |
|
All the samples we use in this study are a part of the CSA07 production and |
| 109 |
|
are generated using $\mathrm{CMSSW}\_1\_4_\_6$ using the full {\sl GEANT} |
