Bisection-based asymmetric MT2 computation: a higher precision calculator than existing symmetric methods

Abstract

An MT2 calculation algorithm is described. It is shown to achieve better precision than the fastest and most popular existing bisection-based methods. Most importantly, it is also the first algorithm to be able to reliably calculate asymmetric MT2 to machine-precision, at speeds comparable to the fastest commonly used symmetric calculators.

Comments: 13 pages, 6 figures. C++ implementation contained within the files submitted to the arXiv. v1: Original submission v2: typo corrections. v3: two new figures and more timing info, shorter title. v4: ancillary file modified to carry additional help text, v5: ancillary file made more portable, v6: fixing small typos in the text, v7: changes to anciliary file to permit PiPI package development