High Energy Scattering on Distant Branes

Details High Energy Scattering on Distant Branes High Energy Scattering on Distant Branes

1999-09-23

arxiv.org/abs/hep-th/9909171v1

JHEP 9912 (1999) 004

Physics

High Energy Physics

High Energy Physics - Theory

JHEP class, 18 pages, 8 figures

Scientific paper

10.1088/1126-6708/1999/12/004

We consider the elastic scattering of two open strings living on two D-branes separated by a distance $r$. We compute the high-energy behavior of the amplitude, to leading order in string coupling, as a function of the scattering angle $\phi$ and of the dimensionless parameter $v= r/(\pi\alpha^\prime\sqrt{s})$ with $\sqrt{s}$ the center-of-mass energy. The result exhibits an interesting phase diagram in the $(v,\phi)$ plane, with a transition at the production threshold for stretched strings at $v=1$. We also discuss some more general features of the open-string semiclassical world-sheets, and use T-duality to give a quantum tunneling interpretation of the exponential suppression at high-energy.

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