7 research outputs found

    Automated pain detection: Comparing the performance of multiple convolutional neural networks

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    The Q2 dependence of the generalized Gerasimov-Drell-Hearn integral for the proton.

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    The dependence on Q2 (the negative square of the 4-momentum of the exchanged virtual photon) of the generalised Gerasimov–Drell–Hearn integral for the proton has been measured in the range 1.2 GeV2<Q2<12 GeV2 by scattering longitudinally polarised positrons on a longitudinally polarised hydrogen gas target. The contributions of the nucleon-resonance and deep inelastic regions to this integral have been evaluated separately. The latter has been found to dominate for Q2>3 GeV2, while both contributions are important at low Q2. The total integral shows no significant deviation from a 1/Q2 behaviour in the measured Q2 range, and thus no sign of large effects due to either nucleon-resonance excitations or nonleading twist
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