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

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

2005-03-18

arxiv.org/abs/hep-ph/0503185v2

JETP Lett. 81 (2005) 303-306; Pisma Zh.Eksp.Teor.Fiz. 81 (2005) 387-390

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1134/1.1944067

It is shown that the differential cross sections of the reactions $dd\to ^3He n$ and $dd\to ^3H p$ 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,$d\sigma/d t\sim s^{-22}$, 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.

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