Measurement of the Mass Difference
Journal Article
·
· Physical Review Letters
We measure the mass difference, Δm+, between the D*(2010)+ and the D+ using the decay chain D*(2010)+→D+π0 with D+→K-π+π+. The data were recorded with the BABAR detector at center-of-mass energies at and near the I(4S) resonance, and correspond to an integrated luminosity of approximately 468 fb-1. We measure Δm+=(140 601.0±6.8[stat]±12.9[syst] ) keV. We combine this result with a previous BABAR measurement of Δm0≡m(D*(2010)+)-m(D0) to obtain ΔmD=m(D+)-m(D0)=(4824.9±6.8[stat]±12.9[syst] ) keV. These results are compatible with and approximately five times more precise than the Particle Data Group averages.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- BABAR Collaboration
- Grant/Contract Number:
- AC02-76SF00515; AC02-05CH11231
- OSTI ID:
- 1410509
- Alternate ID(s):
- OSTI ID: 1408799; OSTI ID: 1420125
- Report Number(s):
- SLAC-PUB-17118; PRLTAO; TRN: US1800114
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 20; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 1 work
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