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arXiv · hep-th/0210245

The decay of massive closed superstrings with maximum angular momentum

Roberto Iengo·Jorge G. Russo
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Abstract

We study the decay of a very massive closed superstring (i.e. α' 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 α' 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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Roberto Iengo, Jorge G. Russo. 2002-10-25. The decay of massive closed superstrings with maximum angular momentum. https://doi.org/10.1088/1126-6708%2F2002%2F11%2F045

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