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+ | ===== Conventions in VBFNLO for Anomalous Quartic Gauge Boson Couplings ===== | ||
+ | |||
+ | \\ | ||
+ | |||
+ | VBFNLO allows for calculations including anomalous gauge boson couplings in many processes. | ||
+ | |||
+ | Both dimension-6 and dimension-8 operators are included in the effective Lagrangian | ||
+ | which is used for calculations with anomalous gauge boson couplings. | ||
+ | They full set of operators can be used in the diboson, triboson and $VVjj$ in VBF production processes. | ||
+ | The dimension-6 operators are constructed according to Refs. [1,2] and | ||
+ | the dimension-8 operators are taken from Ref. [3]. | ||
+ | More details on the implementation in VBFNLO can be found in | ||
+ | Refs. [4,5,6]. | ||
+ | |||
+ | For comparisons with programs that use the definition from [3] (for example MadGraph5 [7] with | ||
+ | the UFO file written by \' | ||
+ | al. [8], | ||
+ | you should note that our definition of the field strength tensors is slightly different than the one | ||
+ | of [3]. Therefore you have to rescale the coupling strengths by | ||
+ | |||
+ | \begin{eqnarray*} | ||
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | \end{eqnarray*} | ||
+ | |||
+ | where $g$ and $g'$ are the SU(2) and U(1) gauge couplings. | ||
+ | The numerical values for $g$ and $g'$ used in the calculation are printed out at the beginning of the VBFNLO run. | ||
+ | |||
+ | |||
+ | \\ | ||
+ | |||
+ | \\ | ||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
+ | [1] K. Hagiwara, R. Szalapski and D. Zeppenfeld, " | ||
+ | |||
+ | [2] K. Hagiwara, S. Ishihara, R. Szalapski and D. Zeppenfeld, " | ||
+ | |||
+ | [3] O. J. P. Eboli, M. C. Gonzalez-Garcia and J. K. Mizukoshi, " | ||
+ | |||
+ | [4] N. Greiner, " | ||
+ | |||
+ | [5] B. Feigl, " | ||
+ | |||
+ | [6] O. Schlimpert, " | ||
+ | |||
+ | [7] J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, JHEP 1106 (2011) 128 [arXiv: | ||
+ | |||
+ | [8] available from http:// | ||