The decay of massive closed superstrings with maximum angular momentum | Zendy

Roberto Iengo | Zendy; Jorge G. Russo | Zendy

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The decay of massive closed superstrings with maximum angular momentum

Author(s) -

Roberto Iengo,

Jorge G. Russo

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/11/045

Subject(s) - physics , angular momentum , string (physics) , momentum (technical analysis) , superstring theory , exponential decay , state (computer science) , coupling (piping) , particle physics , mathematical physics , supersymmetry , nuclear physics , quantum mechanics , mathematics , mechanical engineering , finance , algorithm , engineering , economics

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 flatten-dimensional spacetime and in the regime of weak string coupling, where thedominant decay channel is into two states of masses M_1, M_2. We find that thelifetime 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, forlarge M, the dynamics selects only special channels of decay: modulo processeswhich are exponentially suppressed, for every decay into a state of given massM_1, the mass M_2 of the other state is uniquely determined.Comment: 22 pages, 4 figure

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