Multivariate side-band subtraction using probabilistic event weights
Nuclear Experiment
2009-10-20 v3
Abstract
A common situation in experimental physics is to have a signal which can not be separated from a non-interfering background through the use of any cut. In this paper, we describe a procedure for determining, on an event-by-event basis, a quality factor (-factor) that a given event originated from the signal distribution. This procedure generalizes the "side-band" subtraction method to higher dimensions without requiring the data to be divided into bins. The -factors can then be used as event weights in subsequent analysis procedures, allowing one to more directly access the true spectrum of the signal.
Cite
@article{arxiv.0809.2548,
title = {Multivariate side-band subtraction using probabilistic event weights},
author = {M. Williams and M. Bellis and C. A. Meyer},
journal= {arXiv preprint arXiv:0809.2548},
year = {2009}
}
Comments
17 pages, 9 figures