1997/02/23 by C. Adloff, C. Adloff et al. · 156 citations
Physics and Astronomy · #Charged current #Current (fluid) #Deep inelastic scattering #Electron #HERA #High-Energy Particle Collisions Research #Inelastic scattering #Lepton #Momentum transfer #Neutral current #Neutrino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Positron #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Range (aeronautics) #Scattering #hep-ex
paper · pdf · open access · doi:10.1007/s002880050383
published in Zeitschrift für Physik C 74(2), 191-205 (Springer Nature) · 30 pages, latex, 8 Figures
arxiv created 1997/02/23 · openalex publication_date 1997/04/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
Measurements of ep scattering with squared 4-momentum transfer Q2 up to 35000 GeV2 are compared with the expectation of the standard deep-inelastic model of lepton-nucleon scattering (DIS). For Q2 > 15000 GeV2, Nobs =12 neutral current candidate events are observed where the expectation is NDIS = 4.71 ± 0.76 events. In the same Q2 range, Nobs =4 charged current candidates are observed where the expectation is NDIS = 1.77 ± 0.87 events. The probability P(N ≥ Nobs) that the DIS model signal N fluctuates to N ≥ Nobs in a random set of experiments is 6 10-3 for neutral current and 0.14 for charged current. The difference in the observed and expected number of Neutral Current events is mostly due to events at large masses M = sqrtxs in which the positron is backscattered at large y = Q2/M2.