Observation of inclusive D*± production in the decay of Υ(1S)
We present a study of the inclusive D*± production in the decay of Υ(1S) using (98.6±0.9)×106 Υ(2S) mesons collected with the BABAR detector at the Υ(2S) resonance. Using the decay chain Υ(2S)→π+π−Υ(1S), Υ(1S)→D*±X, where X is unobserved, we measure the branching fraction B[Υ(1S)→D*±X]=(2.52±0.13(st...
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| Main Authors: | , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
25 January 2010
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Volume: 81, Issue: 1, Pages: 1-8 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.011102 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.81.011102 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.81.011102 
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| Author Notes: | The BABAR Collaboration* |
| Summary: | We present a study of the inclusive D*± production in the decay of Υ(1S) using (98.6±0.9)×106 Υ(2S) mesons collected with the BABAR detector at the Υ(2S) resonance. Using the decay chain Υ(2S)→π+π−Υ(1S), Υ(1S)→D*±X, where X is unobserved, we measure the branching fraction B[Υ(1S)→D*±X]=(2.52±0.13(stat)±0.15(syst))% and the D*± momentum distribution in the rest frame of the Υ(1S). We find evidence for an excess of D*± production over the expected rate from the virtual photon annihilation process Υ(1S)→γ∗→c¯c→D*±X. |
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| Item Description: | *The BABAR Collaboration: B. Aubert, J. Marks, S. Schenk, U. Uwer [und 483 weitere Personen] Im Titel sind die Zeichen *, + und - hochgestellt Gesehen am 28.11.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.011102 |