[Triumf-seminars] TRIUMF Seminar today at 15:00

[postmaster@admin.triumf.ca]

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Date/Time: Tue 2003-08-05 at 15:00

Location:  Auditorium          

Speaker:   Jose Verdu (University of Mainz)

Title:     Ultraprecise measurement of the electronic g-factor in hydrogen-like oxygen.

Abstract: We present an experimental value for the g-factor of the electron bound in hydrogen-like oxygen g_{exp}=2.000 047 025 (5). The experiment was performed with a single hydrogen-like oxygen ion stored in a Penning trap.The measurement agrees within 1.5 sigma with the predicted theoretical value: g_{the}=2.000 047 020 2 (6). It represents a very stringent test of the bound-state Quantum Electrodynamics to a 1% level. Additionally and assuming the validity of the theory a new value for the electron mass is obtained: m_e=0.000 548 579 909 8(4). This value is three times more precise than the current accepted one.

Stimulants available 15 minutes before the talk.

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