1. MTN is all you need: Production of multiple semi-invisible resonances at hadron colliders.
- Author
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Dong, Zhongtian, Kong, Kyoungchul, Matchev, Konstantin T., and Matcheva, Katia
- Subjects
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LARGE Hadron Collider , *PARTICLE decays , *GENERALIZATION , *RESONANCE , *DAUGHTERS , *HADRON colliders - Abstract
The stransverse mass variable M T 2 was originally proposed for the study of hadron collider events in which N = 2 parent particles are produced and then decay semi-invisibly. Here we consider the generalization to the case of N ≥ 3 semi-invisibly decaying parent particles. We introduce the corresponding class of kinematic variables M TN and illustrate their mathematical properties. Many of the celebrated features of the M T 2 kinematic endpoint are retained in this more general case, including the ability to measure the mass of the invisible daughter particle from the stransverse mass kink. We describe and validate a numerical procedure for computing M TN in practice. We also identify the configurations of visible momenta which result in nontrivial ( M TN ≠ 0) values, and derive a pure phase-space estimate for the fraction of such events for any N. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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