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

A. M. Sirunyan; A. Tumasyan; W. Adam; Francisco Javier Cuevas Maestro; Carlos Francisco Erice Cid; Javier Fernández Menéndez; Santiago Folgueras Gómez; Isidro González Caballero; Juan Rodrigo González Fernández; José Enrique Palencia Cortezón; Víctor Rodríguez Bouza; Sergio Sánchez Cruz; Jesús Manuel Vizán García; CMS Collaboration

doi:10.1088/1748-0221/14/06/P06032

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

A. M. Sirunyan, A. Tumasyan, W. Adam, Francisco Javier Cuevas Maestro, Carlos Francisco Erice Cid, Javier Fernández Menéndez, Santiago Folgueras Gómez, Isidro González Caballero, Juan Rodrigo González Fernández, José Enrique Palencia Cortezón, …

Journal of instrumentation, Vol.14(6), P06032

06/21/2019

DOI: 10.1088/1748-0221/14/06/P06032

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Abstract

An embedding technique is presented to estimate standard model ττ backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed μμ 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 of 41.5 fb−1.

Details

Title: Subtitle: An embedding technique to determine ττ backgrounds in proton-proton collision data
Creators: A. M. Sirunyan - A. Alikhanyan National Laboratory
A. Tumasyan - A. Alikhanyan National Laboratory
W. Adam - Institute of High Energy Physics
Francisco Javier Cuevas Maestro
Carlos Francisco Erice Cid
Javier Fernández Menéndez
Santiago Folgueras Gómez
Isidro González Caballero
Juan Rodrigo González Fernández
José Enrique Palencia Cortezón
Víctor Rodríguez Bouza
Sergio Sánchez Cruz
Jesús Manuel Vizán García
CMS Collaboration
Contributors: Jane M Nachtman (Contributor) - University of Iowa, Physics and Astronomy
Yasar Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Journal of instrumentation, Vol.14(6), P06032
DOI: 10.1088/1748-0221/14/06/P06032
ISSN: 1748-0221
eISSN: 1748-0221
Publisher: IOP Publishing
Grant note: 675440 / European Commission (ec__________::EC)
Language: English
Date published: 06/21/2019
Academic Unit: Physics and Astronomy
Record Identifier: 9984429028102771

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