An embedding technique to determine ττ backgrounds in proton-proton collision data

CMS Collaboration

Research output: Contribution to journalArticle

Abstract

An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb-1.

Original languageEnglish
Article numberP06032
JournalJournal of Instrumentation
Volume14
Issue number6
DOIs
Publication statusPublished - 21 Jun 2019

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embedding
Protons
Collision
collisions
protons
leptons
Luminance
Kinematics
Simulation
Demonstrations
simulation
Standard Model
muons
kinematics
luminosity
Decay
Uncertainty
decay
estimates
Estimate

Keywords

  • Pattern recognition, cluster finding, calibration and fitting methods
  • Performance of high energy physics detectors

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics

Cite this

An embedding technique to determine ττ backgrounds in proton-proton collision data. / CMS Collaboration.

In: Journal of Instrumentation, Vol. 14, No. 6, P06032, 21.06.2019.

Research output: Contribution to journalArticle

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AU - Asilar, E.

AU - Bergauer, T.

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AU - Chekhovsky, V.

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AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Danilov, V.

AU - Kim, J. H.

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AU - Ivanov, Y.

AU - Kim, V.

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KW - Pattern recognition, cluster finding, calibration and fitting methods

KW - Performance of high energy physics detectors

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