Measurement of the D*(2010)⁺−D⁺ Mass Difference
Name
PhysRevLett.119.202003.pdf
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Author(s)
Lees, J. P.
Poireau, V.
Tisserand, V.
Grauges, E.
Palano, A.
Eigen, G.
Brown, D. N.
Kolomensky, Yu. G.
Fritsch, M.
Koch, H.
Date Issued
November 2017
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Lees, J. P. et al. "Measurement of the D*(2010)⁺−D⁺ Mass Difference." Physical Review Letters 119, 20 (November 2017): 202003 © 2017 American Physical Society
Version
Final published version
Abstract
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 ϒ(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 Δm[subscript D]=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.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.119.202003
