Table 2.

CMS pythia8 LO-PDF tunes CP1 and CP2. Both the values at $Q=m_{\mathrm{Z}}$ and the order of running with $Q^2$ of the strong coupling ${\alpha }_S(m_{\mathrm{Z}})$ are listed. In these tunes, we use the Schuler-Sjöstrand diffraction model [44] and also include the simulation of CD processes. The number of degrees of freedom for tunes CP1 and CP2 is 63

pythia8 parameter	CP1	CP2
PDF Set	NNPDF3.1 LO	NNPDF3.1 LO
${\alpha }_S(m_{\mathrm{Z}})$	0.130	0.130
SpaceShower:rapidityOrder	Off	Off
MultipartonInteractions:EcmRef ($\text{GeV}$ )	7000	7000
${\alpha }_S^{\mathrm{ISR}}(m_{\mathrm{Z}})$ value/order	0.1365/LO	0.130/LO
${\alpha }_S^{\mathrm{FSR}}(m_{\mathrm{Z}})$ value/order	0.1365/LO	0.130/LO
${\alpha }_S^{\mathrm{MPI}}(m_{\mathrm{Z}})$ value/order	0.130/LO	0.130/LO
${\alpha }_S^{\mathrm{ME}}(m_{\mathrm{Z}})$ value/order	0.130/LO	0.130/LO
MultipartonInteractions:pT0Ref ($\text{GeV}$ )	2.4	2.3
MultipartonInteractions:ecmPow	0.15	0.14
MultipartonInteractions:coreRadius	0.54	0.38
MultipartonInteractions:coreFraction	0.68	0.33
ColorReconnection:range	2.63	2.32
${\chi }^2$/dof	0.89	0.54