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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Measurement of the Longitudinal Proton Structure Function in Diffraction at the H1 Experiment and Prospects for Diffraction at LHC
 Šálek, David ; Valkárová, Alice (advisor) ; Tassi, Enrico (referee) ; Piotrzkowski, Krzysztof (referee)
of the Thesis by David Šálek I present the first measurement of the longitudinal diffractive structure function FD L using the H1 detector at HERA. The structure function is extracted from first measurements of the diffractive cross section ep → eXY at centre of mass energies √ s of 225 and 252 GeV at high values of inelasticity y, together with a new measurement at √ s of 319 GeV, using data taken in 2006 and 2007. Previous H1 data at √ s of 301 GeV complete the kinematic coverage needed to extract FD L in the range of photon virtualities 2.5 < Q2 < 100 GeV2 and fractional proton longitudinal momentum loss 10−4 < xIP < 10−2 . I present the first measurement of the longitudinal diffractive structure function FD L using the H1 detector at HERA. The structure function is extracted from the diffractive cross section measurements at three different centre-of-mass energies. I describe in detail all corrections factors and tuning of the simulation needed for the mesaurement. These involve the efficiency of reconstructing primary interaction vertex, track linking the vertex and the cluster of the scattered positron, efficiencies of various cuts in the DIS and diffractive selections. I compare the measured FD L with the predictions based on the NLO QCD fits to previous diffractive data as well a model derived from a...
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