These processes represent the production of a Z boson which subsequently decays either into electrons (nproc=31), neutrinos (nproc=32) or bottom quarks (nproc=33). Where appropriate, the effect of a virtual photon is also included. As noted above, in these latter cases m34min > 0 is obligatory. The calculation may be performed at NLO, although the NLO calculation of process 33 does not include radiation from the bottom quarks (i.e. radiation occurs in the initial state only).
When ‘removebr‘ is ‘.true.‘ in process 31, the Z boson does not decay.
Feynman diagram for LO Z production (process 31):
This calculation is based on ref. [1] and the process can be run by using ‘nproc = 31‘. More information can also be found in [/build/input˙Z.ini](input˙Z.ini) and [/build/input˙Zjet.ini](input˙Zjet.ini) in addition to the information provided in the following table.
= 13 TeVLepton Cuts: pTl > 25 GeV, |ηl| < 2.4 Separation Cuts: 76.2 < mZ < 106.2
The results from the processes and experimental data are demonstrated in the histograms.
This calculation, involving a lepton pair with non zero pT, is based on ref. [2] and the process can be run by using ‘nproc = 41‘.
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