Measurements of the γγ* → π^0 and γγ* → ηc transition form factors at BABAR |
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作者姓名: | V. P. Druzhinin |
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作者单位: | Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia |
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摘 要: | We present measurements of the γγ* → π^0 transition form factor for the momentum transfer range Q^2=4-40 GeV^2 and the γγ* → ηc transition form factor for the range Q^2=2-50 GeV^2. The current status of measurements of the meson-photon transition form factors for the η and η' mesons is discussed. The results of the measurement of the ηc mass, total and two-photon widths are also presented.
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关 键 词: | 外形尺寸 π 宽度测量 双光子 amp 介子 因数 |
收稿时间: | 2010-1-26 |
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