@article{oai:tsukuba.repo.nii.ac.jp:00052296,
 author = {江角, 晋一 and ESUMI, ShinIchi and STA Collaboration},
 issue = {5},
 journal = {Physical review D},
 month = {Mar},
 note = {We report new STAR measurements of the single-spin asymmetries AL for W+ and W? bosons produced in polarized proton-proton collisions at √s=510??GeV as a function of the decay-positron and decay-electron pseudorapidity. The data were obtained in 2013 and correspond to an integrated luminosity of 250??pb?1. The results are combined with previous results obtained with 86??pb?1. A comparison with theoretical expectations based on polarized lepton-nucleon deep-inelastic scattering and prior polarized proton-proton data suggests a difference between the ￣u and ￣d quark helicity distributions for 0.05<x<0.25. In addition, we report new results for the double-spin asymmetries ALL for W±, as well as AL for Z/γ? production and subsequent decay into electron-positron pairs.},
 title = {Measurement of the longitudinal spin asymmetries for weak boson production in proton-proton collisions at √s=510??GeV},
 volume = {99},
 year = {2019},
 yomi = {エスミ, シンイチ}
}