Other Variables

v (nu) : is the lepton's energy loss in the nucleon rest frame (Ee-Ee' ). Here, Ee and Ee' are the initial and final lepton energies in the nucleon rest frame. The maximum energy transfer vmax is given by vmax = s/2mp .

W2 : is the mass squared of the hadronic system recoiling against the scattered lepton. W can also be interpreted as the center-of-mass energy of the gauge boson nucleon system. Small values of x correspond to large values of the invariant mass W.