APS » PROLA » Phys. Rev. Lett. » Volume 82 » Issue 24

Phys. Rev. Lett. 82, 4761 - 4764 (1999)

Heavy Majorana Neutrinos at e+e- Colliders

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G. Cvetič1,2, C. S. Kim3, and C. W. Kim4,5
1Department of Physics, Bielefeld University, 33501 Bielefeld, Germany
2Department of Physics, Dortmund University, 44221 Dortmund, Germany
3Department of Physics, Yonsei University, Seoul 120-749, Korea
4Korea Institute for Advanced Study, Seoul 130-012, Korea
5Department of Physics & Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218

Received 30 December 1998

We investigate possibilities for detecting heavy Majorana neutrinos ( N's) in e+e- at LEP200 and future linear colliders. We concentrate on the processes where the pairs of intermediate heavy N's produce a clear signal of total lepton number violation (e+e-→NN→W+l-W+l′-). Such a signal is not possible if the heavy neutrinos are of Dirac nature. Our approach is general in the sense that the intermediate N's can be either on shell or off shell. Discussion of the relative numerical importance of the s and the t+u channels of the NN production is also included.


©1999 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v82/p4761
DOI: 10.1103/PhysRevLett.82.4761
PACS: 14.60.St, 11.30.Fs, 13.10.+q, 13.35.Hb

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