Publications associated with TORCH

Search for baryon-number violating Ξb0 oscillations.

Physical Review Letters American Physical Society 119 (2017) 181807-

R Aaij, B Adeva, M Adinolfi, M Bjørn, T Evans, P Gandini, BR Gruberg Cazon, T Hadavizadeh, TH Hancock, N Harnew, D Hill, PG Jalocha, MJJ John, NP Jurik, S Malde, AK Nandi, HL Pullen, A Rollings, M Vesterinen, GR Wilkinson

A search for baryon-number violating Ξ0b oscillations is performed with a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3  fb^−1. The baryon number at the moment of production is identified by requiring that the Ξ0b come from the decay of a resonance Ξ*−b → Ξ0bπ− or Ξ'−b → Ξ0bπ−, and the baryon number at the moment of decay is identified from the final state using the decays Ξ0b → Ξ+cπ−,Ξ+c → pK−π+. 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^−1, where ω is the associated angular frequency.

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