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T: Fachverband Teilchenphysik
T 24: Standard Model Physics II
T 24.1: Vortrag
Dienstag, 17. März 2026, 16:15–16:30, KH 00.014
Hadronic Recoil in future high µ measurements — Fabrice Balli1, •Tim Frederik Beumker2, and Frank Ellinghaus2 — 1Université Paris-Saclay — 2Bergische Universität Wuppertal
A precise calculation of the missing transverse momentum (ETmiss) is crucial for many Standard Model measurements. In addition, the recently published measurement of charged-current Drell-Yan cross-sections at high transverse masses showed that uncertainties arising from the ETmiss calculation dominate, in particular when determining fake lepton contributions.
The Hadronic Recoil provides an alternative method of calculating the ETmiss by using the recoil of the vector boson. It has been successfully used in low-µ precision W measurements so far and an implementation of the Hadronic Recoil was moved to the central ATLAS reconstruction software, to make it accessible for future high-µ (= #interactions per bunch crossing) analyses. This talk presents the general procedure for calculating the Hadronic Recoil and its validation at high µ.
Keywords: Hadronic recoil; $W$ precision measurements