| dc.creator |
Bernabéu, José |
|
| dc.creator |
Nardi, Enrico |
|
| dc.creator |
Tommasini, Daniele |
|
| dc.date |
2007-12-21T12:22:11Z |
|
| dc.date |
2007-12-21T12:22:11Z |
|
| dc.date |
1993-11-22 |
|
| dc.date.accessioned |
2017-01-31T00:59:28Z |
|
| dc.date.available |
2017-01-31T00:59:28Z |
|
| dc.identifier |
Nuclear Physics B 409(1): 69-86 |
|
| dc.identifier |
<http://hdl.handle.net/2027.42/30445> |
|
| dc.identifier |
http://www.sciencedirect.com/science/article/B6TVC-4719VT3-2P1/2/9966d03cfd3e8dade1d48b51f63ba2cb |
|
| dc.identifier |
http://hdl.handle.net/10261/2565 |
|
| dc.identifier |
10.1016/0550-3213(93)90446-V |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/2027 |
|
| dc.description |
Together with the existence of new neutral gauge bosons, models based on extended gauge groups (rank > 4) often predict also new charged fermions. A mixing of the known fermions with new states with exotic weak-isospin assignments (left-handed singlets and right-handed doublets) will induce tree level flavour changing neutral interactions mediated by Z exchange, while if the mixing is only with new states with ordinary weak-isospin assignments, the flavour changing neutral currents are mainly due to the exchange of the lightest new neutral gauge boson Z'. We show that the present experimental limits on μ-e conversion in nuclei give a nuclear-model-independent bound on the Z-e-μ vertex which is twice as strong as that obtained from μ --> eee. In the case of E6 models these limits provide quite stringent constraints on the Z' mass and on the Z-Z' mixing angle. We point out that the proposed experiments to search for μ-e conversion in nuclei have good chances to find evidence of lepton flavour violation, either in the case that new exotic fermions are present at the electroweak scale, or if a new neutral gauge boson Z' of E6 origin lighter than a few TeV exists. |
|
| dc.description |
One of us (D.T.) acknowledges a post-doc fellowship from the Spanish Ministry of Education and Science. This work has been partially supported by CICYT (Spain), under grant AEN/90-0040. |
|
| dc.description |
Peer reviewed |
|
| dc.language |
eng |
|
| dc.publisher |
Elsevier |
|
| dc.rights |
closedAccess |
|
| dc.subject |
Elementary Particles |
|
| dc.subject |
Particle Physics |
|
| dc.subject |
Theoretical Physics |
|
| dc.title |
μ-e conversion in nuclei and Z' physics |
|
| dc.type |
Artículo |
|