Indication of asymptotic scaling in the reactions $dd\to p^3$H, $dd\to n^3$He and $dp\to dp$

Abstract

It is shown that the differential cross sections of the reactions $dd{\to }^{3}Hen$ and $dd{\to }^{3}Hp$ measured at c.m.s.scattering angle${\theta }_{cm}=60^{\circ }$ in the interval of the deuteron beam energy 0.5 - 1.2 GeV demonstrate the scaling behaviour,$d\sigma /dt\sim s^{-22}$, which follows from constituent quark counting rules. It is found also that the differential cross section of the elastic $dp\to dp$ scattering at ${\theta }_{cm}=125^{\circ }-135^{\circ }$ follows the scaling regime $\sim s^{-16}$ at beam energies 0.5 - 5 GeV. These data are parameterized here using the Reggeon exchange.

6 pages, Latex, 2 eps figures; final version accepted by Pis'ma v ZHETF, corrected and completed references

References in corpus (3)

• Electromagnetic structure of the deuteron
• QED Radiative Corrections in Processes of Exclusive Pion Electroproduction
• Deuteron photodisintegration within the Quark-Gluon Strings Model and QCD motivated nonlinear Regge trajectories

Cited by in corpus (4)

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• Constituent-counting rule in photoproduction of hyperon resonances
• Analyzing powers Ayy, Axx, Axz and Ay in the dd->3Hen reaction at 270 MeV
• Exotic-Hadron Signature by Constituent-Counting Rule in Perturbative QCD