BPHY23: Commit PsiPlusPsiCascade class

Xin Chenrequested to merge
xchen/athena:mytopic into 21.2

Two updates:

  1. Modified BPHY23.py to include
  • Psi(2S) + Psi(2S) -> mu mu Jpsi pi pi -> 4mu + pi pi
  • Upsilon(2S) + Upsilon(2S) -> mu mu Upsilon pi pi -> 4mu + pi pi
  • Psi(2S) + Upsilon(2S) -> mu mu Upsilon pi pi -> 4mu + pi pi
  • Upsilon(2S) + Psi(2S) -> mu mu Jpsi pi pi -> 4mu + pi pi
  • mu mu (non-resonant) + Upsilon(2S) -> mu mu Upsilon pi pi -> 4mu + pi pi
  1. Added PsiPlusPsiCascade class to include
  • Psi(2S) + Psi(2S) -> Jpsi pi pi Jpsi pi pi -> 4mu + 4pi
  • Psi(2S) + Upsilon(2S) -> Jpsi pi pi Upsilon pi pi -> 4mu + 4pi
  • Upsilon(2S) + Upsilon(2S) -> Upsilon pi pi Upsilon pi pi -> 4mu + 4pi

JIRA ticket: https://its.cern.ch/jira/browse/ATLBPHYS-219

Sincerely, -Xin

Edited by Xin Chen

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