Transverse mass and invariant mass observables for measuring the mass of a semi-invisibly decaying heavy particle

Abstract

Formulae are derived for the positions of end-points in the invariant mass and transverse mass distributions obtained from the products of heavy states decaying to pairs of semi-invisibly decaying lighter states. Formulae are derived both for the special case where the two decay chains are identical and the more general case where they are different. The formulae are tested with a simple case study of heavy SUSY higgs particles decaying to gauginos at the LHC.

arXiv comment13 pages, 8 eps figures

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