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- W3103345705 abstract "Based on data on elastic $rho^0$ photoproduction from the H1, Omega and ZEUS collaborations, a fit has been performed to extract the value $alpha_P (t)$ of the pomeron trajectory at fixed values of t from the W dependence of the differential $gamma p$ cross section $d sigma_{gamma p} (W) / d t$. The data used in the fit cover the range of $8.3 le W le 94 GeV$ in $gamma p$ centre-of-mass energy and $0.01 le |t| le 0.95 GeV^2$ in momentum transfer. A linear fit to the resulting values of $alpha_P (t)$ yields $alpha_{P,0} =1.0871 pm 0.0026 (stat.) pm 0.0030 (syst.)$ for the intercept and $alpha'_P = 0.126 pm 0.013 (stat.) pm 0.012 (syst.) GeV^{-2}$ for the slope of the pomeron trajectory. The data are also compatible with the Donnachie-Landshoff trajectory $alpha_P (t) = 1.0808 + 0.25 GeV^{-2}cdot t$ at low values $|t| lesssim 0.3 GeV^2$ and with a constant value of $alpha_P (t)$ at larger values of $|t|$." @default.
- W3103345705 created "2020-11-23" @default.
- W3103345705 creator A5063687922 @default.
- W3103345705 date "2009-01-01" @default.
- W3103345705 modified "2023-09-27" @default.
- W3103345705 title "Extraction of the Pomeron Trajectory from a Global Fit to Exclusive ρ0Meson Photoproduction Data" @default.
- W3103345705 cites W2029596132 @default.
- W3103345705 doi "https://doi.org/10.3360/dis.2009.165" @default.
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