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2025-05-29 10:24:38

This https://arxiv.org/abs/2411.09357 has been replaced.
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Reconstruction and identification of pairs of collimated $τ$-leptons decaying hadronically using $\sqrt{s}=13$ TeV $pp$ collision data with the ATLAS detector
This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying $τ$-lepton pair with low transverse momentum. When two $τ$-leptons are highly collimated, their visible decay products might overlap, degrading the reconstruction performance for each of the $τ$-leptons. This requires a dedicated treatment that attempts to tag it as a single object. The reconstruction algorithm is based on a large radius jet and its associated two leading subjets, a…