Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-10-27
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex, 5 pages, 2 figures can be obtained from the Authors (presented to the VIth Blois Workshop on Frontiers in Strong Intera
Scientific paper
We present the results of fitting all data for $pp$ and $\bar pp$ scattering at $\sqrt s \geq 9.7$ Gev and up to the collider energy with various analytic parametrizations of the elastic forward scattering amplitudes based on the derivative dispersion relation. It is found that the model containing the Pomeron and Reggeon terms with 8 parameters has the most preferred $\chi^2/d.o.f = 1.3$, while the Donnachie and Landshoff model with 5 parameters has $\chi^2/d.o.f = 2.16$ for a data set of 111 experimental points. The current data however make no clear preference between the $\ell n s$ and $\ell n^2 s$ type Pomerons.
Kang Kyungsik
Kim Sung Ku
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