Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1992-09-09
Phys.Rev. D48 (1993) 1240-1247
Physics
High Energy Physics
High Energy Physics - Phenomenology
plain tex, 22 pages + 2 pages figures in PostScript (appended after `\bye'), UM-TH 92-19
Scientific paper
10.1103/PhysRevD.48.1240
We study a new class of flavor changing interactions, which can arise in models based on extended gauge groups (rank $>$4) when new charged fermions are present together with a new neutral gauge boson. We discuss the cases in which the flavor changing couplings in the new neutral current coupled to the $Z^\prime$ are theoretically expected to be large, implying that the observed suppression of neutral flavor changing transitions must be provided by heavy $Z^\prime$ masses together with small $Z$-$Z^\prime$ mixing angles. Concentrating on E$_6$ models, we show how the tight experimental limit on $\mu \rightarrow eee$ implies serious constraints on the $Z^\prime$ mass and mixing angle. We conclude that if the value of the flavor changing parameters is assumed to lie in a theoretically natural range, in most cases the presence of a $Z^\prime$ much lighter than 1 TeV is unlikely.
No associations
LandOfFree
Z', new fermions and flavor changing processes, constraints on E$_6$ models from $μ$ --> eee does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Z', new fermions and flavor changing processes, constraints on E$_6$ models from $μ$ --> eee, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Z', new fermions and flavor changing processes, constraints on E$_6$ models from $μ$ --> eee will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-262772