Recent content by hipa7

Hi I want to look at the energy resolution of a homogeneous calorimeter, in the literature I found that is given by σ/E = a ⊕ b/√E ⊕ c/E and I found that the ⊕ means quadratic sum, what does quadratic sum mean? Thanks Aaron

I'm reading a paper on pion quasi-elastic scattering and the total cross section graph is shown as scalar -isoscalar channel and non-scalar-isoscalar channel, what are those channels? are they pion+n-->pion+n and pion+p --> pion +p?