LEPTON NUMBER VIOLATION DECAYS IN E6 STRING MODEL

Date

1994-08-01

Author

Alıyev, Tahmasıb
AKKUS, B
CETIN, Y
SILAHTAROGLU, E

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Lepton number violation decays l(i) --> l(j)gammagamma and l(j) --> 3l(j) are investigated in the framework of E6 superstring model and the explicit expression for these decay rates are obtained. Relations between lepton number violation decays l(i) --> l(j)gammagamma and l(i) --> l(j)gamma are established and it is shown that the relative value of these decays is independent of the details of the considered model. In the considered model we predict that BR(tau --> mugammagamma) is large than BR(mu --> egamma) in spite of the fact that tau --> mugammagamma decay is suppressed by a factor of alpha(el)/pi, compared to the mu --> --> egamma. Using the present experimental restrictions, the upper bound for tau --> mugammagamma decays and lower limits for the masses of new particles are obtained. Also it is shown that rare mu --> 3e decay has large BR in comparison with tau --> 3mu and tau --> 3e decays.

Subject Keywords

Nuclear and High Energy Physics, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

URI

https://hdl.handle.net/11511/41884

Collections

Department of Physics, Article