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Observation of inclusive D*(+/-) production in the decay of Y(1S)
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BaBaR Collaboration (Including:
). (2010) Observation of inclusive D*(+/-) production in the decay of Y(1S). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.81 (No.1). article no. 011102. doi:10.1103/PhysRevD.81.011102 ISSN 1550-7998.Research output not available from this repository.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.81.011102
Abstract
We present a study of the inclusive D*(+/-) production in the decay of Y(1S) using (98.6 +/- 0.9) X 10(6) Y(2S) mesons collected with the BABAR detector at the Y(2S) resonance. Using the decay chain Y(2S) -> pi(+)pi Y-(1S), Y(1S) -> D*X-+/-, where X is unobserved, we measure the branching fraction B[Y(1S) -> D*X-+/-] = (2.52 +/- 0.13(stat) +/- 0.15(syst)% and the D*(+/-) momentum distribution in the rest frame of the Y(1S). We find evidence for an excess of D*+/- production over the expected rate from the virtual photon annihilation process Y(1S) -> gamma* -> c (c) over bar -> D*X-+/-.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | January 2010 | ||||
| Dates: |
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| Volume: | Vol.81 | ||||
| Number: | No.1 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | article no. 011102 | ||||
| DOI: | 10.1103/PhysRevD.81.011102 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published |
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