Identifying phase-space boundaries with Voronoi tessellations

Debnath, Dipsikha; Gainer, James S.; Kilic, Can; Kim, Doojin; Matchev, Konstantin T.; Yang, Yuan-Pao

doi:10.1140/epjc/s10052-016-4431-z

Title: Identifying phase-space boundaries with Voronoi tessellations

Journal Article · Thu Nov 24 00:00:00 EST 2016 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-016-4431-z· OSTI ID:1333425

Debnath, Dipsikha; Gainer, James S.; Kilic, Can;

; Matchev, Konstantin T.; Yang, Yuan-Pao

Determining the masses of new physics particles appearing in decay chains is an important and longstanding problem in high energy phenomenology. Recently it has been shown that these mass measurements can be improved by utilizing the boundary of the allowed region in the fully differentiable phase space in its full dimensionality. Here in this paper we show that the practical challenge of identifying this boundary can be solved using techniques based on the geometric properties of the cells resulting from Voronoi tessellations of the relevant data. The robust detection of such phase-space boundaries in the data could also be used to corroborate a new physics discovery based on a cut-and-count analysis.

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Research Organization:: Univ. of Florida, Gainesville, FL (United States); Univ. of Hawaii, Honolulu, HI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0010296; SC0010504; PHY-1315983; PHY-1316033; NSF-PHY-0969510

OSTI ID:: 1333425

Alternate ID(s):: OSTI ID: 1368081

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 76 Journal Issue: 11; ISSN 1434-6044

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 12 works

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