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| Preprint | PUBDB-2022-01054 |
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2022
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Please use a persistent id in citations: doi:10.3204/PUBDB-2022-01054
Report No.: DESY-22-024; DO-TH 22/04; SAGEX-22-19; TTP-22-011; arXiv:2202.08476
Abstract: The precise knowledge of the QED initial state corrections is of instrumental importance in studyinghigh luminosity measurements in $e^+e^-$ annihilation at facilities like LEP, the International Linear ColliderILC, CLIC, a Giga-$Z$ facility, and the planned FCC\_ee. Logarithmic corrections of up to $O(\alpha^6 L^5)$ arenecessary with various subleading terms taken into account. This applies to both the inclusive measurementof processes like $e^+ e^- \rightarrow \gamma^*/Z^*$ and also the forward--backward asymmetry. As has been shownrecently, techniques from massive QCD, such as the computation of massive on--shell operator matrix elements canbe used for these calculations. We give an introduction to this topic and present both the calculationmethods and the numerical corrections having been reached so far.
Keyword(s): angular distribution, asymmetry ; luminosity, high ; annihilation ; quantum electrodynamics ; ILC Coll ; initial state ; quantum chromodynamics ; CERN LEP Stor ; CERN CLIC
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Journal Article
High precision QED Initial State Corrections for $e^+ e^- \rightarrow \gamma^*/Z^*$ Annihilation
Modern physics letters / A 37(07), 2230004 (2022) [10.1142/S021773232230004X]
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