The decay of massive closed superstrings with maximum angular momentum

Details The decay of massive closed superstrings with maximum angular momentum The decay of massive closed superstrings with maximum angular momentum

2002-10-25

arxiv.org/abs/hep-th/0210245v1

JHEP 0211 (2002) 045

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, 4 figures

Scientific paper

10.1088/1126-6708/2002/11/045

We study the decay of a very massive closed superstring (i.e. \alpha' M^2>> 1) in the unique state of maximum angular momentum. This is done in flat ten-dimensional spacetime and in the regime of weak string coupling, where the dominant decay channel is into two states of masses M_1, M_2. We find that the lifetime surprisingly grows with the first power of the mass M: T =c \alpha' M. We also compute the decay rate for each values of M_1, M_2. We find that, for large M, the dynamics selects only special channels of decay: modulo processes which are exponentially suppressed, for every decay into a state of given mass M_1, the mass M_2 of the other state is uniquely determined.

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