Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-06-29
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 1 figure; an additional datum ($\sqrt{s} = 546 GeV$) has been added
Scientific paper
Under the assumption of total absorption and dominance of the imaginary part of the scattering amplitude, we present a sum rule for any hadronic elastic differential cross-section ${d\sigma}\over{dt}$: the dimensionless quantity ${{1}\over{2}}\int (dt)\sqrt{{{1}\over {\pi}}{{d\sigma}\over{dt}}} \to 1$, at asymptotic energies. Experimental data from ISR and Tevatron confirm a trend towards its saturation and some estimates are presented for LHC. Its universality and further consequences for the nature of absorption in QCD based models for elastic and total cross-sections are explored.
Pancheri Giulia
Srivastava Yogendra
Staffolani Nicola
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