cms-analysis/HiggsAnalysis-CombinedLimit — pull request #119 by chenmingshui (2014-04-16 18:55:07+00:00)
Title: RooExponential's slope is composed by multipars

RooExponential's slope is composed by multipars (e.g. HWWlvJ pdf),

let the code make a plain CachingPdf instead of vectorizing it