Radiative Return: a progress on FSR tests
S. Ivashyn, H. Czyz, A. Korchin
TL;DR
This paper evaluates different models of final-state radiation in the radiative return method for e+e- to pi+pi-gamma, aiming to reduce theoretical uncertainties crucial for precise measurements at meson factories.
Contribution
It compares multiple FSR models using the PHOKHARA Monte Carlo generator to improve the accuracy of the radiative return method at DAPHNE.
Findings
Different FSR models show varying levels of agreement.
Results help refine theoretical uncertainties in meson factory measurements.
Enhanced understanding of photon emission effects near threshold.
Abstract
To improve the accuracy of the e+e- -> pi+pi-gamma Radiative Return method, one has to control the theoretical uncertainty of the final-state photon emission. It is of particular importance at DAPHNE for the analysis, where cuts are relaxed to cover the threshold region. By means of Monte Carlo generator PHOKHARA we compare several final-state radiation models and present results, relevant for a meson factory running at sqrt{s}=1 GeV.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Detector Development and Performance · Radiation Detection and Scintillator Technologies