| 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 |
Measurements of the γγ＊ → π^0 and γγ＊ → ηc transition form factors at BABAR |
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| V. P. Druzhinin.Measurements of the γγ＊ → π^0 and γγ＊ → ηc transition form factors at BABAR[J].High Energy Physics and Nuclear Physics,2010,34(6):816-821. |
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| Authors: | 《Chinese Physica C》 |
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| Abstract: | two-photon interaction, pseudoscalar meson, transition form factor, pi0, eta, eta（958）, etac |
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| Keywords: | two-photon interaction pseudoscalar meson transition form factor pi0 eta eta（958） etac |
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