Determination of Nucleon Form factors from Baryonic B Decays
نویسنده
چکیده
It is the first time that the study of three-body baryonic B decays offers an independent determination of the nucleon form factors for the time-like four momentum transfer (t > 0) region, such as G M (t) of vector currents and those of axial ones. Explicitly, from the data of B̄ 0 → np̄D∗+ and Λp̄π+ we find that the ratio GM (t)/G p M (t) = −1.3 −0.6, which supports the FENICE experimental result. The vector and axial-vector form factors of pn̄, pp̄ and nn̄ pairs due to weak currents are also presented, which can be tested in future experiments. PACS numbers: 13.40.Gp, 28.20.-v, 13.25.Hw, 14.20.Dh
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تاریخ انتشار 2006