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  1. Home
  2. Browse by Author

Browsing by Author "Abidi, S.H."

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    Improved reconstruction of highly boosted τ -lepton pairs in the τ τ → ( μ ν μ ν τ ) ( hadrons + ν τ ) decay channels with the ATLAS detector
    (2025) Aad, G.; Aakvaag, E. ; Abbott, B. ; Abdelhameed, S.; Abeling, K. ; Abicht, N.J.; Abidi, S.H.; Aboelela, M.; Aboulhorma, A.; Abramowicz, H.; Abulaiti, Y.; Acharya, B.S. ; Ackermann, A.; Adam Bourdarios, C.; Adamczyk, L. ; Addepalli, S. V.; Addison, M. J. ; Díaz, Marco A.; Garay Walls, F.M.; Urrejola, P.; ATLAS Collaboration
    This paper presents a new τ -lepton reconstruction and identification procedure at the ATLAS detector at the Large Hadron Collider, which leads to significantly improved performance in the case of physics processes where a highly boosted pair of τ -leptons is produced and one τ -lepton decays into a muon and two neutrinos ( τ μ ), and the other decays into hadrons and one neutrino ( τ had ). By removing the muon information from the signals used for reconstruction and identification of the τ had candidate in the boosted pair, the efficiency is raised to the level expected for an isolated τ had . The new procedure is validated by selecting a sample of highly boosted Z → τ μ τ had candidates from the data sample of 140  fb - 1 of proton–proton collisions at 13 TeV recorded with the ATLAS detector. Good agreement is found between data and simulation predictions in both the Z → τ μ τ had signal region and in a background validation region. The results presented in this paper demonstrate the effectiveness of the τ had reconstruction with muon removal in enhancing the signal sensitivity of the boosted τ μ τ had channel at the ATLAS detector.
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    Measurement of photon-jet transverse momentum correlations in 5.02 TeV Pb + Pb and pp collisions with ATLAS
    (2019) Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abhayasinghe, D.K; Abidi, S.H.; Lee, Graham Richard; Ochoa-Ricoux, Juan Pedro; Olivares Pino, Sebastián Andrés

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