Measurement of inclusive epep cross sections at high QQ2 at s√s√=225 and 252 GeV and of the longitudinal proton structure function FFLL at HERA

H1 Collaboration; Andreev, V; Baghdasaryan, A; Beazsuren, K; Belousov, A; Belov, P; Müller, K; Robmann, P; Straumann, U; Truöl, P; et al (2014). Measurement of inclusive epep cross sections at high QQ2 at s√s√=225 and 252 GeV and of the longitudinal proton structure function FFLL at HERA. European Physical Journal C - Particles and Fields, 74(2814):online.

Abstract

Inclusive ep double differential cross sections for neutral current deep inelastic scattering are measured with the H1 detector at HERA. The data were taken with a lepton beam energy of 27.6 GeV and two proton beam energies of Ep=460 and 575 GeV corresponding to centre-of-mass energies of 225 and 252 GeV, respectively. The measurements cover the region of 6.5×10−4≤x≤0.65 for 35≤Q2≤800 GeV 2 up to y=0.85 . The measurements are used together with previously published H1 data at Ep=920 GeV and lower Q2 data at Ep=460 , 575 and 920 GeV to extract the longitudinal proton structure function FL in the region 1.5≤Q2≤800 GeV 2 .

Abstract

Inclusive ep double differential cross sections for neutral current deep inelastic scattering are measured with the H1 detector at HERA. The data were taken with a lepton beam energy of 27.6 GeV and two proton beam energies of Ep=460 and 575 GeV corresponding to centre-of-mass energies of 225 and 252 GeV, respectively. The measurements cover the region of 6.5×10−4≤x≤0.65 for 35≤Q2≤800 GeV 2 up to y=0.85 . The measurements are used together with previously published H1 data at Ep=920 GeV and lower Q2 data at Ep=460 , 575 and 920 GeV to extract the longitudinal proton structure function FL in the region 1.5≤Q2≤800 GeV 2 .

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