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

### Submission summary

 As Contributors: Soham Bhattacharya Preprint link: scipost_201811_00035v1 Date accepted: 2019-01-17 Date submitted: 2018-11-22 Submitted by: Bhattacharya, Soham Submitted to: SciPost Physics Proceedings Proceedings issue: The 15th International Workshop on Tau Lepton Physics (Amsterdam, 2018-09) Domain(s): Exp. & Comp. Subject area: High-Energy Physics - Experiment

### Abstract

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.

### Submission & Refereeing History

Submission scipost_201811_00035v1 on 22 November 2018

## 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

### Report

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