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2017-11-14

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/132627

Measurement of the D∗(2010)+−D+ Mass Difference

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We measure the mass difference, Δ m + , between the D ∗ ( 2010 ) + and the D + using the decay chain D ∗ ( 2010 ) + → D + π 0 with D + → K − π + π + . The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ ( 4 S ) resonance, and correspond to an integrated luminosity of approximately 468     fb − 1 . We measure Δ m + = ( 140   601.0 ± 6.8 [ stat ] ± 12.9 [ syst ] )     keV . We combine this result with a previous BABAR measurement of Δ m 0 ≡ m ( D ∗ ( 2010 ) + ) − m ( D 0 ) to obtain Δ m D = m ( D + ) − m ( D 0 ) = ( 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.

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https://doi.org/10.1103/PhysRevLett.119.202003

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Física de partícules, Experiments

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Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Measurement of the D∗(2010)+−D+ Mass Difference. Physical Review Letters. 2017. Vol. 119, num. 20, pags. 202003. ISSN 0031-9007. [consulted: 5 of October of 2026]. Available at: https://hdl.handle.net/2445/132627

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