Draft: AP for lb2etapk 25c1-c4 data

Analysis Production for Lb2etacpk (etac2ppbar & KsKpi) 25 c1-c4 data, without momentum scale calibration.

Selection:

ipchi2>9 for p/K from Lb and ppbar/Kpi from etac,

ipchi2<16, vchi2<25 for Lb

dira>0.999, fdchi2>25, vdz>1.5mm, dls>3 for etac