Changes between Version 1 and Version 2 of VBF
 Timestamp:
 04/06/12 16:33:02 (8 years ago)
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VBF
v1 v2 129 129 ==== libintf_15.f ==== 130 130 131 The file libintf_15.f contains the LO interferences between the VBFlike diagrams (eg. ud >udh, uu>uuh) as well as the interferences between VBF and Schannel (udbar>udbarh). It as been checked with Madgraph point by point in the phase space and at the integrated level.131 The file libintf_15.f contains the LO interferences between the VBFlike diagrams (eg. ud>udh, uu>uuh) as well as the interferences between VBF and Schannel (udbar>udbarh). It as been checked with Madgraph point by point in the phase space and at the integrated level. 132 132 133 133 The interference impact is at the permille level or less at 14 TeV … … 142 142 * See paper by Jeppe, Thomas, and Jennifer: ["http://arxiv.org/abs/0709.3513"] 143 143 * top quark effects: 144 * In particular we neglect diagrams including a top box coupled to two gluons, a Z and the higgs, and their interference with diagrams included in our calculation. Those diagrams are suppressed in the mt >infty limit. However, this contribution can be substantial at the LHC. (See for example [http://arxiv.org/abs/hepph/0307206 Brein, Djouadi, Harlander]), and have been computed in this work by [http://dx.doi.org/10.1103/PhysRevD.42.2253 Kniehl] (see also attachment kniehl.pdf)144 * In particular we neglect diagrams including a top box coupled to two gluons, a Z and the higgs, and their interference with diagrams included in our calculation. Those diagrams are suppressed in the mt>infty limit. However, this contribution can be substantial at the LHC. (See for example [http://arxiv.org/abs/hepph/0307206 Brein, Djouadi, Harlander]), and have been computed in this work by [http://dx.doi.org/10.1103/PhysRevD.42.2253 Kniehl] (see also attachment kniehl.pdf) 145 145 * 146 * b quark initiated charged current processes (i.e. no b >c, b>u mixing). Since b>u << b>c, we just need to check the effect of the latter. Being totally inclusive, we already take into account CKM mixing for the other flavours146 * b quark initiated charged current processes (i.e. no b>c, b>u mixing). Since b>u << b>c, we just need to check the effect of the latter. Being totally inclusive, we already take into account CKM mixing for the other flavours 147 147 * interferences beyond LO (ok if interferences are already small) 148 * Non DYlike diagrams in the schannel (related to top quark effects, ex. gg >VH via top box or triangle, (see above)149 * sch^2  >branching ratio into hadrons: we should understand if take the experimental value, or the fixed order QCD computation148 * Non DYlike diagrams in the schannel (related to top quark effects, ex. gg>VH via top box or triangle, (see above) 149 * sch^2 > branching ratio into hadrons: we should understand if take the experimental value, or the fixed order QCD computation 150 150 151 151  Main.MarcoZaro  20091218 … … 178 178 * [attachment:vbf_20.tar vbf_20.tar]: the 2.0 version of the vbf code 179 179 180 * [attachment:kniehl.pdf kniehl.pdf]: knihel paper about pp >ZH @NNLO180 * [attachment:kniehl.pdf kniehl.pdf]: knihel paper about pp>ZH @NNLO 181 181 182 182 * [attachment:vbf_20.tar vbf_20.tar]: the 2.0 version of the vbf code … … 225 225 226 226 227