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Hi all,

Do any one familiar with these analysis of cross section ?

I wonder how to find the cross section of ( p p ## \to \gamma \gamma## b b~) (blue region) in the opposite plot, the y-axis is the number of events divided by 100 GeV with luminosity = 100 ##\mbox{fb}^{−1 }##..

The Fig. from [arXiv:1601.07934 [hep-ph]]. It's known that ## \sigma \times ## luminosity = Number of events, and also ## \mbox{GeV}^{−2}=0.3894~ \mbox{mb}=0.0389~ \mbox{fm}^2 ##, but i still stuck to find sigma at 250 for instance ..

Do any one familiar with these analysis of cross section ?

I wonder how to find the cross section of ( p p ## \to \gamma \gamma## b b~) (blue region) in the opposite plot, the y-axis is the number of events divided by 100 GeV with luminosity = 100 ##\mbox{fb}^{−1 }##..

The Fig. from [arXiv:1601.07934 [hep-ph]]. It's known that ## \sigma \times ## luminosity = Number of events, and also ## \mbox{GeV}^{−2}=0.3894~ \mbox{mb}=0.0389~ \mbox{fm}^2 ##, but i still stuck to find sigma at 250 for instance ..