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T: Fachverband Teilchenphysik
T 75: Higgs Physics VII
T 75.5: Talk
Thursday, March 19, 2026, 17:15–17:30, KH 01.019
Beam-beam effects at the Hybrid Asymmetric Linear Higgs Factory — •Shriyansh Ranjan1,2, Jenny List1, and Mikael Berggren1 — 1Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany — 2Universität Hamburg, Hamburg, Germany
Since the discovery of the Higgs boson in 2012, probing the Higgs potential has become a primary objective for understanding vacuum stability and searching for Beyond Standard Model (BSM) physics. This precise measurement of the Higgs potential requires the clean environment of an e+e- collider. The Hybrid Asymmetric Linear Higgs Factory (HALHF) utilizes plasma-wakefield acceleration (PWFA), an emerging accelerator technology, to create high-energy collisions capable of such precision.
However, the resulting beam conditions drive strong-field QED processes that reshape the luminosity spectrum and increase detector backgrounds. To address these challenges, advanced simulation tools are required. Our study models these beam-induced backgrounds for HALHF using cutting edge simulation software, providing inputs helpful in designing the asymmetric ILD detector at HALHF.
This talk presents simulation results for the highly asymmetric e+e- collisions at HALHF, evaluating the beam-induced backgrounds as well as the luminosity spectrum and its impact on key physics measurements. The outcomes will be discussed across different center-of-mass energies from 250 GeV to 550 GeV.
Keywords: HALHF; Simulation; GuineaPIG; WarpX; Beam-induced backgrounds