Photon reconstruction and identification in heavy ion collisions with the CMS detector
Korea University, 145 Anam-ro, Seonbuk-gu, Seoul, Republic of Korea
a e-mail: email@example.com
Published online: 12 April 2017
Measurement of isolated photon gives a possibility to constrain the nuclear parton distribution functions (nPDF). The isolated photon is also the clear tag in the photon-jet channel for studying in-medium modifications of fragmentation functions of parton initiated jets. The performance of isolated photon reconstruction and identification has been studied in PbPb collisions at √SNN = 5.02 TeV. Trigger, reconstruction and isolation efficiencies are measured in PYTHIA+HYDJET Monte-Carlo simulation. We describe signal template method to determine the purity of isolated photons.
© The Authors, published by EDP Sciences, 2017
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