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Title: Test of Local Realism with Entangled phi-phi Pairs at BESIII

Speaker: Dr. Shen Xun, Peking University

Time and place: 12:30-13:30, May 24 (Friday), 2013, Lecture Hall/INPAC

Abstract:

We propose an experimental test of local hidden variable theories against quantum mechanics by measuring the polarization correlation of entangled vector meson pairs. The form of correlation is reproduced by treating the decay of a phi meson as the measurement to its polarization vector. This interpretation is straightforward and provide more detailed information on the quantum entanglement in high energy physics. Such a test can be carried out at BESIII and the data analysis is ongoing. The estimation of background level is essential for this analysis. We provided a proper description of the reconstructed mass spectrum of eta_c so that the fraction of backgrounds events can be estimated more preciously.

Shen Xun’s CV:

+ 1998 - 2002, Department of Physics(School of Physics), Peking University, Bachelor of Science

+ 2002 - 2005, School of Physics, Peking University, Master of Science, Advisor: Prof. Bo-Qiang Ma

+ 2005 - 2009, Max-Planck Institute of Physics, Doctor of Natural Science (by Technical University of Munich), studying of a DEPFET based vertex detector for the future ILC, Advisor: Prof. Allen Caldwell

+ 2009 - 2011, away from Physics and worked as a project manager in an IT-related company at Shenzhen.

+ 2011 - now, School of Physics, Peking University, Postdoc, Advisor: Prof. Mao Yajun, focus on the data analysis at BESIII