BI-TP 2008/07 The Color Dipole Picture and the ratio of R(W 2, Q 2) = σL/σT 12
نویسنده
چکیده
The transverse size of qq̄ fluctuations of the longitudinal photon is reduced relative to the transverse size of qq̄ fluctuations of the transverse photon. This implies R(W , Q) = 0.375 or, equivalently, FL/F2 = 0.27 at x ≪ 0.1 and Q sufficiently large, while R(W , Q) = 0.5, if this effect is not taken into account. Forthcoming experimental data from HERA will allow to test this prediction. Supported by Deutsche Forschungsgemeinschaft, contract number schi 189/6-2 and the Ministry of Education and Science, Japan under the Grant-in-Aid for basic research program B (No. 17340085). email: [email protected]; [email protected]
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تاریخ انتشار 2008