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

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arxiv 1411.4312 v7 pith:RVDXJN2K submitted 2014-11-16 hep-ph

classification hep-ph
keywords algorithmasymmetricbisection-basedexistingfastestmethodsprecisionsymmetric
verification ladder T0 review T1 audit T2 compute T3 formal

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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.

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  1. Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV

    hep-ex 2025-10 accept novelty 6.0 of 10

    First dedicated CMS search for bb + dilepton + missing transverse momentum in the 2HDM+a model finds no signal and sets 95% CL cross-section limits of 10^-2 to 10^-3 pb for mH = 400-2000 GeV.

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