37 , 075021 (2010). 

[15] Missing E$_{T}$ ( ̸ E$_{T}$ ) is defined by ⃗ ̸ E$_{T}$ = − Σ$_{i}$ E i $_{T}$ˆ n$_{i}$ , where i is the calorimeter tower number for | η | < 3 . 6, and ˆ n$_{i}$ is a unit vector perpendicular to the beam axis and pointing at the i th tower ( ̸ E$_{T}$ = | ⃗ ̸ E$_{T}$ | ). 

[16] S. Klimenko, J. Konigsberg, and T.M. Liss, FERMILAB- 

FN-0741 (2003). 

[17] A. Stump et al. , J. High Energy Phys. 046 (2003) 0310. 

[18] J. Heinrich and L. Lyons, Annual Review of Nuclear and Particle Science, 57 , 145 (2007). 

