Possibilities for detecting heavy Majorana neutrinos (N''s) at future eμ colliders are investigated. In contrast to the e- e+ colliders (LEP200 and NLC), the center-of-mass (CMS) energies achieved at eμ colliders can be much higher and the Z-mediated s channel is excluded automatically. This opens the attractive possibility of having high production cross sections for N's and at the same time probing only the strength of charged current couplings of N's (NWe and NWμ). The production cross sections and the expected numbers of events for the reaction e∓μ±→ NN → W±Script l sign∓W±Script l sign′∓ are calculated for various masses M of the Majorana neutrinos and for the CMS energies √s = 0.5-6.0 TeV. The values of the charged current coupling parameters are set equal to their present upper bounds. We obtain reasonably high production cross sections. Further, the effects of the off-shell intermediate N's turn out to be large and they increase with increasing √s.
|Number of pages||8|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 1999|
Bibliographical noteFunding Information:
We would like to thank V. Barger for his helpful comments. G.C. acknowledges support by the BMBF project 05-7DO93P7 during the initial stage of this work, and he thanks Prof. D. Schildknecht for the hospitality of Bielefeld University during the completion of this work. The work of C.S.K. was supported in part by KRF Non-Directed-Research-Fund, Project No. 1997-001-D00111, in part by the BSRI Program, Ministry of Education, Project No. 98-015-D00061, in part by the KOSEF-DFG large collaboration project, Project No. 96-0702-01-01-2.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics