Antideuteron production in ϒ(nS) decays and in e[superscript +]e[superscript −] → q[bar over q] at √s ≈ 10.58 GeV
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Lees-2014-Antideuteron production.pdf
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Author(s)
Sciolla, Gabriella
Cowan, Ray F
Date Issued
June 2014
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, B. Stugu, et al. “Antideuteron Production in ϒ(nS) Decays and in e[superscript +]e[superscript −] → q[bar over q] at √s ≈ 10.58 GeV.” Phys. Rev. D 89, no. 11 (June 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We present measurements of the inclusive production of antideuterons in e[superscript +]e[superscript −] annihilation into hadrons at ≈ 10.58 GeV center-of-mass energy and in Υ(1S,2S,3S) decays. The results are obtained using data collected by the BABAR detector at the PEP-II electron-positron collider. Assuming a fireball spectral shape for the emitted antideuteron momentum, we find B(Υ(1S) → [bar over d]X) = (2.81 ± 0.49(stat)[+0.20 over −0.24](syst)) × 10[superscript −5], B(Υ(2S) →[bar over d]X) = (2.64 ± 0.11(stat)[+0.26 over −0.21](syst)) × 10[superscript −5], B(Υ(3S) → [bar over d]X) = (2.33 ± 0.15(stat)[+0.31 over −0.28](syst)) × 10[superscript −5], and σ(e[superscript +]e[superscript −] → [bar over d]X) = (9.63 ± 0.41(stat)[+1.17 over −1.01](syst) fb.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.89.111102
