We present a simple method for analyzing the impact of precision electroweak data above and below the Z peak on flavor-conserving, heavy new physics. We find that experiments have probed about ten combinations of new-physics effects, which to a good approximation can be condensed into the effective oblique parameters S, T, U, V, X, W, Y (we prove positivity constraints W,Y >= 0) and three combinations of quark couplings (including a distinct parameter for the bottom). We apply our method to generic extra Z(') vectors.
Autori interni: | |
Autori: | Cacciapaglia G; Csaki C; Marandella G; Strumia A |
Titolo: | The minimal set of electroweak precision parameters |
Anno del prodotto: | 2006 |
Digital Object Identifier (DOI): | 10.1103/PhysRevD.74.033011 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.