# Talk:CLs method (particle physics)

(Redirected from Talk:CLs upper limits)
I am having a hard time appreciating what the notation used in Equation 1 is supposed to mean. The meaning of the condition is far from clear. For example, the denominator is written ${\displaystyle P(\theta _{up}<\theta |0)}$, which based on the numerator appears to mean ${\displaystyle P(\theta _{up}<\theta |\theta =0)}$, which seems like it should simply reduce to ${\displaystyle P(\theta _{up}<0)}$ which is clearly not what it is intended since this is zero always (following the logic ${\displaystyle P(A for random variable A with parameter b and real number c).