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arXiv · 0905.1344

Accurate Mass Determinations in Decay Chains with Missing Energy: II

Hsin-Chia Cheng·John F. Gunion·Zhenyu Han·Bob McElrath
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Abstract

We discuss kinematic methods for determining the masses of the particles in events at a hadron collider in which a pair of identical particles is produced with each decaying via a series of on-shell intermediate beyond-the-SM (BSM) particles to visible SM particles and an invisible particle (schematically, pp -> ZZ + jets with Z -> Aa -> Bba -> Ccba -> ... -> cba... + N where a,b,c,... are visible SM particles or groups of SM particles, A,B,C,... are on-shell BSM particles and N is invisible). This topology arises in many models including SUSY processes such as squark and gluino pair production and decay. We present the detailed procedure for the case of Z -> 3 visible particles + N and demonstrate that the masses obtained from the kinematic procedure are independent of the model by comparing SUSY to UED.

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Hsin-Chia Cheng, John F. Gunion, Zhenyu Han, Bob McElrath. 2009-05-08. Accurate Mass Determinations in Decay Chains with Missing Energy: II. https://doi.org/10.1103/physrevd.80.035020

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