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tighten trigger requirements for BXX lines, remove WS prescale

Adjust BXX lines to satisfy rate requirements. Request to be included in Stripping 28r2p2, 29r2p3, and S34r0p3.

Current rates for 2016, 2017, and 2018, respectively:

StrippingReport                                                INFO Event 100000, Good event 100000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  0.0270|        27|       |   4.147|
 |_StrippingSequenceStreamSemileptonic_                        |  0.0270|        27|       |   4.137|
 |!StrippingDstRSwD02K2PiD0forBXXLine                          |  0.0240|        24|  1.042|   3.449|
 |!StrippingDstWSwD02K2PiD0forBXXLine                          |  0.0030|         3|  1.000|   0.032|
 |!StrippingDstRSwD02K2PiD0forBXXLine_TIMING                   |  0.0240|        24|  1.042|   0.020|
 |!StrippingDstWSwD02K2PiD0forBXXLine_TIMING                   |  0.0030|         3|  1.000|   0.020|

StrippingReport                                                INFO Event 100000, Good event 100000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  0.0650|        65|       |   4.945|
 |_StrippingSequenceStreamSemileptonic_                        |  0.0650|        65|       |   4.933|
 |!StrippingDstRSwD02K2PiD0forBXXLine                          |  0.0530|        53|  1.113|   4.158|
 |!StrippingDstWSwD02K2PiD0forBXXLine                          |  0.0130|        13|  1.231|   0.030|
 |!StrippingDstRSwD02K2PiD0forBXXLine_TIMING                   |  0.0530|        53|  1.113|   0.024|
 |!StrippingDstWSwD02K2PiD0forBXXLine_TIMING                   |  0.0130|        13|  1.231|   0.022|

StrippingReport                                                INFO Event 100000, Good event 100000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  0.0530|        53|       |   5.280|
 |_StrippingSequenceStreamSemileptonic_                        |  0.0530|        53|       |   5.269|
 |!StrippingDstRSwD02K2PiD0forBXXLine                          |  0.0460|        46|  1.087|   4.451|
 |!StrippingDstWSwD02K2PiD0forBXXLine                          |  0.0100|        10|  1.100|   0.041|
 |!StrippingDstRSwD02K2PiD0forBXXLine_TIMING                   |  0.0460|        46|  1.087|   0.025|
 |!StrippingDstWSwD02K2PiD0forBXXLine_TIMING                   |  0.0100|        10|  1.100|   0.022|

Full logs attached as ValidateS28r2p2.log, ValidateS29r2p3.log, and ValidateS34r0p3.log.

Current best guess for the differences in rates across years is a change in the efficiency of Hlt1TrackMVA, which all selected candidates satisfy.

Edited by Michael Kent Wilkinson

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