An Embedding Technique to Determine tt Backgrounds in Proton-Proton Collision Data
Journal of Instrumentation 2019
Viesturs Veckalns, et al 100

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.


Atslēgas vārdi
Pattern recognition, cluster finding, calibration and fitting methods | Performance of high energy physics detectors
DOI
10.1088/1748-0221/14/06/P06032
Hipersaite
https://iopscience.iop.org/article/10.1088/1748-0221/14/06/P06032

Veckalns, V., 100, e. An Embedding Technique to Determine tt Backgrounds in Proton-Proton Collision Data. Journal of Instrumentation, 2019, Vol. 14, 1.-10.lpp. ISSN 1748-0221. Pieejams: doi:10.1088/1748-0221/14/06/P06032

Publikācijas valoda
English (en)
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