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arXiv · 1504.07870

Study of photon detection efficiency and position resolution of BESIII electromagnetic calorimeter

Vindhyawasini Prasad·Chunxiu Liu·Xiaobin Ji·Weidong Li·Huaimin Liu·Xinchou Lou
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Abstract

We study the photon detection efficiency and position resolution of the electromagnetic calorimeter (EMC) of the BESIII experiment. The control sample of the initial-state-radiation (ISR) process of $e^+e^-\rightarrow \gamma \mu^+\mu^-$ is used at $J/\psi$ and $\psi(3770)$ resonances for the EMC calibration and photon detection efficiency study. Photon detection efficiency is defined as the predicted photon, obtained by performing a kinematic fit with two muon tracks, matched with real photons in the EMC. The spatial resolution of the EMC is defined as the separation in polar ($\theta$) and azimuthal ($\phi$) angles between charged track and associated cluster centroid on the front face of the EMC crystals.

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Vindhyawasini Prasad, Chunxiu Liu, Xiaobin Ji, Weidong Li, Huaimin Liu, Xinchou Lou. 2015-04-29. Study of photon detection efficiency and position resolution of BESIII electromagnetic calorimeter. https://doi.org/10.1007/978-3-319-25619-1_88

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