1999/10/31 by K. Ackerstaff, A. Airapetian, Н. Акопов +97 · 5 citations
Physics and Astronomy · #Cross section (physics) #DESY #Deep inelastic scattering #High-Energy Particle Collisions Research #Inelastic scattering #Materials science #Nuclear physics #Optics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #Scaling #Scattering #hep-ex
paper · pdf · doi:10.1016/s0370-2693(99)01493-8
published as Phys.Lett.B475:386-394,2000; Erratum-ibid.B567:339-346,2003 · 9 pages of latex, 5 figures
arxiv created 1999/11/01 · openalex publication_date 2000/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Cross section ratios for deep-inelastic scattering from 14N and 3He with respect to 2H have been measured by the HERMES experiment at DESY using a 27.5 GeV positron beam. The data cover a range in the Bjorken scaling variable x between 0.013 and 0.65, while the negative squared four-momentum transfer Q2 varies from 0.5 to 15 GeV2. The data are compared to measurements performed by NMC, E665, and SLAC on 4He and 12C, and are found to be different for x < 0.06 and Q2 < 1.5 GeV2. The observed difference is attributed to an A-dependence of the ratio R = sigmaL / sigmaT of longitudinal to transverse deep-inelastic scattering cross sections at low x and low Q2.