List of models

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This is a list of models producing boosted W and Z bosons (with x-section estimates), ranked by other objects in the event.

Pairs (WW/WZ/ZZ):

  • Warped/(partially) composite Standard Model (SM): this framework can address both the Planck-weak and flavor hierarchy problems of the SM. Here W', Z', graviton' denote Kaluza-Klein (KK) W, Z, graviton in warped extra dimensional picture or composite W,Z, graviton in the 4D picture of partial compositeness of SM. There's also a particle called "radion" (fluctuation of size of extra dimension) which is like Higgs' (i.e., couplings similar to SM Higgs). Very rough cross-sections (they vary a bit depending on details of the model) for the processes below are (other dominant decay channel is often t tbar for neutral particles or t bbar for W'):

(1). W' (2 TeV) -> WZ, WH: ~O(10) fb

(see reference for precise cross-sections and other details.)

(2). Z' (2 TeV) -> WW, ZH: ~O(10) fb

(see reference for precise cross-sections and other details.)

(3) graviton' (2 TeV) -> WW, ZZ, HH: ~O(10) fb

(see references, and for precise cross-sections and other details.)

(4). Higgs' -> WW, ZZ, HH

(see reference for more details) Also see Seung+Mugetalk

Model file for CalcHEP implementation of RS radion (with radion mass larger than ~400 GeV) is linked in the following link:

[Note that W/Z in all channels above are dominantly LONGITUDINAL. All the above decay patterns follow automatically from overlaps of profiles in extra dimension: light SM fermions are localized near the Planck brane and photon, gluon and transverse W/Z have flat profiles, whereas all KK's, Higgs (including longitudinal W/Z) and top quark are localized near the TeV brane. In the 4D picture, the light fermions are mostly elementary and Higgs and top are mostly composite, whereas photon, gluon and transverse W/Z are sort of in-between.

Masses below 2 TeV for W'/Z' are strongly disfavored by lower-energy precision tests, whereas graviton' mass is expected to be of similar size to W'/Z' and hence is also constrained to be above ~2 TeV. Radion mass can vary from ~100 GeV to ~2 TeV.]

  • W,Z from Heavy neutrinos pair production from Z' in the U(1)_B-L model Basso LH09 talk

Heavy neutrino pair production: up to ~100fb, decaying in (see reference for more details):

- WW+2leptons (up to ~25fb);

- WZ+1leptons + MET (up to ~25fb);

- ZZ+MET (up to ~6fb);

- WH+1leptons + MET (up to ~25fb);

- ZH+MET (up to ~12fb);

- HH+MET (up to ~6fb);

  • W,Z from Heavy KK fermions: for pair production of B' at 500 GeV, sigma ~ 1pb @10 TeV. See Muge's talk for details
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