Higher Order Moments of Momentum Spectra
Higher Order Moments of Momentum Spectra
Higher Order Moments of Momentum Spectra
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Fragmentation FunctionsD(ξ,Q,Λ) not calculable in pQCDxp pp= =2p QmaxBUT know how to evolve in Q 2⎛ξ = log⎜1⎝x p⎟⎠⎞For e + e -: Q = √sFor DIS: Q is the virtuality <strong>of</strong> the exchanged photon andp is measured in the current region <strong>of</strong> the Breit frame(where p max is Q/2)