The Longitudinal Proton Structure Function at HERA
Schwartz, Jason
Original · EN
The longitudinal proton structure function (FL) has been measured at the HERA collider in positron-proton deep inelastic scattering collisions with the H1 and ZEUS detectors. This measurement is achieved by using multiple center-of-mass energies (sqrt(s)) via a reduction of the proton beam energy. The energies used for this measurement are sqrt(s) = 318, 251, 225 GeV. The kinematic region studied is 2.5<Q²<800 GeV². H1 and ZEUS data have been combined to increase statistical precision and reduce systematic effects. The impact of the low proton beam energy cross sections to the proton PDFs is being investigated.
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