Titlebook: Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisio; Katsuro Nakamura Book 2014 Springer

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Electron Analysis, established and form the basis of the electron analysis. Also in the electron measurement using the HBD, we utilized these techniques as well as the HBD response information. We explain these conventional methods in the following sections. In Sect.?., we introduce the basic electron selection with

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Results,ysis method improves the signal purity of the heavy flavor electron. In Sect.?., using the obtained yield, we estimated the signal purity and confirmed the improvement by comparing with the previously measured signal purity. We also obtained the cross section of the heavy flavor electron production

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Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisio

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Nucleon Spin Physics,ks have been revealed with enough precision to understand their contribution to the nucleon spin 1/2, the distribution function for gluon has not been enough understood yet. In this work, the gluon polarization is investigated by measuring heavy flavor production in polarized proton-proton collision

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Book 2014e electron production with transverse momentum ranging 0.5 < pT < 3.0 GeV/c is measured and confirmed to be zero-consistent within the limit of the statistical uncertainty of about 1%. This result identifies the constraint of the gluon polarization in the small Bjorken .x. region, a worldwide first.