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New decfiles for B+ -> pi+ pi- e+ nu_e X decays

Harry Victor Cliff requested to merge hvc/my-changes into master

A set of new decfiles for B+ -> pi+ pi- e+ nu_e X that are important backgrounds for b->s/dee analyses.

New files are:

  • Bu_pipienu=DecProdCut
  • Bu_rhoenu,pipi=DecProdCut
  • Bu_omegaenu,pipipi=DecProdCut
  • Bu_etaenu,pipigamma=DecProdCut
  • Bu_etapenu,pipigamma=DecProdCut

Note that check-decfiles produces a warning, saying that the neutral flag for Bu_etaenu,pipigamma=DecProdCut should be set to 4 and not 2. However, this appears to contradict the guidelines (see below), which says that 4 should be set if the decay contains \pi^0 \to \gamma \gamma or \eta \to \gamma \gamma which it does not. Instead, it contains a photon that does not come from \pi^0 \to \gamma \gamma or \eta \to \gamma \gamma, which corresponds to 2 in the guidelines. (The photon comes from \eta \to \pi^+ \pi^- \gamma).

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