Search for Baryon-Number Violating Ξ[superscript 0][subscript b] Oscillations
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PhysRevLett.119.181807.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Ali, S.
Date Issued
November 2017
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., et al. “Search for Baryon-Number Violating Ξ[subscript 0][subscript b] Oscillations.” Physical Review Letters, vol. 119, no. 18, Nov. 2017. © 2017 CERN, for the LHCb
Version
Final published version
Abstract
A search for baryon-number violating Ξ[superscript 0][subscript b] oscillations is performed with a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3 fb[superscript -1]. The baryon number at the moment of production is identified by requiring that the Ξ[superscript 0][subscript b] come from the decay of a resonance Ξ[supescript *-][subscript b]→Ξ[superscript 0][subscript b]π[superscript -] or Ξ[superscript ′-][subscript b]→Ξ[superscript 0][subscript b]π[superscript -], and the baryon number at the moment of decay is identified from the final state using the decays Ξ[superscript 0][subscript b]→Ξ[superscript +][subscript c]π[superscript -],Ξ[superscript +][subscript c]→pK[superscript -]π[superscript +]. No evidence of baryon-number violation is found, and an upper limit at the 95% confidence level is set on the oscillation rate of ω<0.08 ps[superscript -1], where ω is the associated angular frequency.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.119.181807
