Published In Phys. Rev. Lett Date Fri, 02/04/2011 - 12:00 Volume 106 Pages 052503 DOI 10.1103/PhysRevLett.106.052503 Refine Po Paper Category In-Source Spectroscopy Author(s) T E Cocolios W Dexters M D Seliverstov A N Andreyev S Antalic A E Barzakh B Bastin J Büscher I G Darby D V Fedorov V N Fedosseyev K T Flanagan S Franchoo S Fritzsche G Huber M Huyse M Keupers U Köster Yu Kudryavtsev E Mané B A Marsh P L Molkanov R D Page A M Sjoedin I Stefan J Van de Walle P Van Duppen M Venhart S G Zemlyanoy M Bender P H Heenen