| Precision Measurement of the (2007) | |||||||||||||
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Abstract | |||||||||||||
| . A new precision measurement of the # 0 mass has been performed at the NA48 experiment at the CERN SPS. The value obtained is [1314.820.06 (stat.) 0.2 (syst.)] MeV/c 2 . The branching ratios of # 0 radiative decays have been measured as: Br(# 0 # ##)=[1.90 0.34(stat.) 0.19(syst.)] 10 -3 and Br(# 0 # # 0 #)=[3.14 0.76(stat.) 0.32(syst.)] 10 -3 . The NA48 Collaboration: Precision measurement of the # 0 mass 1 Introduction A precise measurement of hyperon masses permits the checking of the mass splitting related to radiative corrections. The mass of the # 0 hyperon is known with less pre- a Present address: Dipartimento di Fisica dell'Universitae Sezione dell'INFN di Perugia, 06100 Perugia, Italy. b Present address: Physics-Astronomy Building, Michigan State University, East Lansing, MI 48824 USA. c Present address: NIKHEF, PO Box 41882,1009 DB Amsterdam, The Netherlands. d Funded by the UK Particle Physics and Astronomy Research Council.... | |||||||||||||
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