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Tau reconstruction at CMS with a focus on high $ p_{T} $ taus

by Soham Bhattacharya on behalf of The CMS Collaboration

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Submission summary

Authors (as registered SciPost users): Soham Bhattacharya
Submission information
Preprint Link: scipost_201811_00035v1  (pdf)
Date accepted: 2019-01-17
Date submitted: 2018-11-22 01:00
Submitted by: Bhattacharya, Soham
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 15th International Workshop on Tau Lepton Physics (TAU2018)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Experiment
Approaches: Experimental, Computational


We present the algorithm and performance of tau reconstruction at the CMS experiment, while highlighting a dedicated reconstruction algorithm that uses calorimeter hits instead of tracks to reconstruct taus with high transverse momentum. Describing the standard Hadrons-Plus-Strips (HPS) algorithm and its dependence on track reconstruction and shower modelling, we present the calorimetric tau (calo-tau) reconstruction that uses minimal track information for high $ p_{T} $ taus. The pros and cons of these algorithms are discussed along with their performance and potential uses. It is found that the calo-tau algorithm outperforms the HPS algorithm in the high efficiency region. This study is work in progress, and is an attempt to tune the reconstruction for high $ p_{T} $ taus. The calo-tau algorithm is not yet an official tau reconstruction algorithm for CMS.

Published as SciPost Phys. Proc. 1, 050 (2019)

Reports on this Submission

Anonymous Report 1 on 2018-12-12 (Invited Report)

  • Cite as: Anonymous, Report on arXiv:scipost_201811_00035v1, delivered 2018-12-12, doi: 10.21468/SciPost.Report.739


This is a very well written paper describing an original new algorithm developed by the CMS
collaboration to improve the efficiency of tau reconstruction and identification at high
transverse momentum. A comparison with the default algorithm is also shown, and the
strength of the new method is very impressive. I highly recommend the publication and
congratulate the author for this excellent contribution.

  • validity: top
  • significance: top
  • originality: high
  • clarity: top
  • formatting: perfect
  • grammar: perfect

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