===== Dibosons VBS production =====

**Interested people**: Vitaliano, Kenneth, Efe, Simon, Carlo, Reina Camacho, Mathieu, Marco,  Michael...ADD YOUR NAME HERE...

A discussion is scheduled on Monday afternoon.
   * Kenneth will discuss theory issues in dibosons ewk analyses in CMS
   * Simon will discuss possible studies to be done as a Les Houches project

Proposed study: 
   * assess off-shell and interference effects at LO (without PS) for different value of \Delta\eta_jj and m_jj cut 
   * define "signal" (VBS topology) vs "background" (QCD-like topology) based on the results of the above study
   * from the above also assess to which precision VBS-like approximation for NLO calculation is reliable (the same effects are those neglected in this approximation) 
   * study if by taking the ratio of xsec for "signal" to "background" regions some theory uncertainties on QCD VVjj production cancel out
   * [(maybe) check the effect of VBS WW as background to H->WW]

Processes to be studied:

   * pp -> jj W⁺Z:
   48 processes and 976 diagrams
   * pp -> jj W⁺W⁻:
   76 processes and 1432 diagrams

So pp -> jj W⁺Z will be studied first and if enough time, pp -> jj W⁺W⁻ afterwards.
--> pp -> jj \mu⁺ \mu⁻ e⁺ \nu_e
with p = u u~ d d~ c c~ s s~
with j = u u~ d d~ c c~ s s~

The convener of the group is Kenneth.
Unless someone wants to be the convener.
Any objections?

Definition of the cuts (apart from \Delta\eta_jj and m_jj)?

Input parameters?