"ResBos2: A Resummation Package for the LHC"

 

 

 

With the precision of the data at the LHC, it is important to have theoretical predictions at the same precision. To reach the desired precision in certain observables, such as the transverse momentum of the Z boson, fixed order calculations are insufficient. The breakdown of these calculations are due to large logarithms in certain kinematical regions. This issue is resolved by a technique known as resummation. I will discuss the improvements on the resummation calculations for electroweak bosons and the importance for many precision observables. Furthermore, recently transverse momentum resummation  for non-color singlet final states is beginning to be studied. I will discuss the results for Higgs+jet resummation. Finally, these improvements for the resummation calculation are included in the upcoming public code ResBos2. ResBos2 is a Monte Carlo Event Generator for resummation calculations, and is a vast improvement on the original ResBos package.