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T: Fachverband Teilchenphysik

T 58: QCD (Exp.) 2

T 58.5: Talk

Wednesday, March 23, 2022, 17:15–17:30, T-H17

Potential of Common Data-Taking of the ATLAS, AFP, ZDC and LHCf Detectors in Run 3 of the LHC — •Yusuf Can Çekmecelioğlu, Clara Elisabeth Leitgeb, and Çiğdem Işsever — DESY, Zeuthen, Germany

Studies of air showers induced by highly energetic cosmic particles depend heavily on models for the soft hadronic interactions. Perturbative QCD cannot be applied to these interactions due to the low momentum exchange between particles. Instead, phenomenological models that take inputs from the (ultra-)forward regions of collider experiments are used to better understand these processes. The LHC with a collision energy of √s=13.6 TeV in run 3 can generate such events and provide data to reduce the large uncertainties for hadronic models.

This talk will target the potential of a common data-taking of several forward detectors (so far used independently) that are located at both sides of the ATLAS detector, namely: The ATLAS Forward Proton detector (AFP), the ATLAS Zero Degree Calorimeters (ZDC), and the LHC forward (LHCf) calorimeters. The analysis focuses on the determination and optimisation of the common acceptance between detectors for simulated single diffractive (SD) events at (preliminary) run 3 beam conditions. SD events allow AFP to tag the intact proton and the LHCf and ZDC calorimeters to detect the neutral particles from the dissociated proton. Together with pseudorapidity gap measurements in the central region provided by the ATLAS detector, a joint data-taking between these detectors could improve the identification and kinematic reconstruction of such events.