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SL: Fix to Bc->D0munu, D0->Kmunu line

Alison Maria Tully requested to merge Tully-SL-Bc2D0munu_D02Kmunu_fix_S34r0p1 into 2018-patches

The D0 mass window has been changed from the default of +/- 80 MeV around the nominal D0 mass to a range of 700-1700 MeV. Fake muons are also no longer being used to reduce the rate.

The rate is now 0.16% with a steam rate of 2.79% (0.22% for the line and 2.69% for the stream previously). I've checked the DST file produced and the new D0 window is implemented correctly.

StrippingReport                                                INFO Event 100000, Good event 100000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  2.9420|      2942|       |  12.137|
 |_StrippingSequenceStreamSemileptonic_                        |  2.7880|      2788|       |  11.847|
 |!StrippingB2DMuNuX_D0_KMuNu                                  |  0.1610|       161|  1.099|   0.065|
 |!StrippingB2DMuNuX_D0_KMuNu_TIMING                           |  0.1610|       161|  1.099|   0.041|
Edited by Alison Maria Tully

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