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New precision measurement of the J/- and -meson masses
A new high precision measurement of the J/- and /-meson masses has been performed at the VEPP-4M collider using the KEDR detector. The resonant depolarization method has been employed for the absolute calibration of the beam energy. The following mass values have been obtained: . The relative measur...
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Published in: | Hadron Spectroscopy 2004-01, Vol.717, p.591-591 |
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Main Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | A new high precision measurement of the J/- and /-meson masses has been performed at the VEPP-4M collider using the KEDR detector. The resonant depolarization method has been employed for the absolute calibration of the beam energy. The following mass values have been obtained: . The relative measurement accuracy has reached 4*10-6 for J/ and 7*10-6 for , approximately 3 times better than in the previous precise experiments. The description of the experiment and the error analysis can be found in hep-ex/0306050, Phys. Lett. B573 (2003) 63-79. |
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ISSN: | 0094-243X |
DOI: | 10.1063/1.1799767 |