Measurement of the Total Photon Proton Cross Section and its Decomposition at 200~GeV Centre of Mass Energy
H1-collaboration
Abstract
We present a new measurement of the total photoproduction cross section performed with the H1 detector at HERA. For an average centre of mass energy of 200~GeV a value of σtotγp= 165211μb has been obtained. A detailed analysis of the data in adequate kinematic regions enabled a decomposition of the total cross section in its elastic, single diffractive dissociation and remaining non-diffractive parts, based on safe assumptions on the double diffractive dissociation contribution.
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