Measuring the masses of a pair of semi-invisibly decaying particles in central exclusive production with forward proton tagging

Details Measuring the masses of a pair of semi-invisibly decaying particles in central exclusive production with forward proton tagging Measuring the masses of a pair of semi-invisibly decaying particles in central exclusive production with forward proton tagging

2011-10-19

arxiv.org/abs/1110.4320v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures

Scientific paper

We discuss how the mass of new physics particles involved in a pair of short decay chains leading to two invisible particles, for example slepton pair production, followed by the decay into two leptons and two neutralinos, may be measured in central exclusive production (CEP) with forward proton tagging. We show how the existing mass measurement strategies in CEP may be improved by making full use of the mass-shell constraints, and demonstrate that, with around 30 signal events, the masses of the slepton and neutralino can be measured with an accuracy of a few GeV.

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