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Home > Research > Researchers > Helen O'Keeffe
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Helen O'Keeffe supervises 3 postgraduate research students. Some of the students have produced research profiles, these are listed below:

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Dr Helen O'Keeffe


Helen O'Keeffe

Physics Building

Lancaster University


Lancaster LA1 4YB

United Kingdom

Tel: +44 1524 593223

Location: B74

Research overview

My research focuses on particle physics, in particular measuring properties of the neutrino.  I am a member of the Tokai to Kamioka (T2K) experiment which searches for the appearance of electron neutrinos in a muon neutrino beam. In the experiment, a beam of muon neutrinos is produced at J-PARC in Tokai-mura, Ibaraki, Japan, and its composition is measured 280 m downstream of the production point. The beam is fired 295 km through the Earth to the Super Kamiokande detector, where its properties are also measured. Comparison of the beam measurements at each detector indicates that following their 295 km journey, some of the muon neutrinos have changed type (oscillated) into electron or tau neutrinos. Detailed analysis of the data allows (some of) the parameters associated with the oscillations to be determined.

Within T2K I am co-convener of the pi0 analysis group, which uses data from the near detector to measure pi0 production cross-sections. I also am actively involved with the operation and maintenance of the near detector Data Acquisition (DAQ) systems and electronics.

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