A search for baryon-number violating Ξ_b^0 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 Ξ_b^0 come from the decay of a resonance Ξ_b^*-→Ξ_b^0π^- or Ξ_b^'-→Ξ_b^0π^-, and the baryon number at the moment of decay is identified from the final state using the decays Ξ_b^0→Ξ_c^+π^-,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.
Search for Baryon-Number Violating Ξ_b^0 Oscillations
Veltri, M;
2017
Abstract
A search for baryon-number violating Ξ_b^0 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 Ξ_b^0 come from the decay of a resonance Ξ_b^*-→Ξ_b^0π^- or Ξ_b^'-→Ξ_b^0π^-, and the baryon number at the moment of decay is identified from the final state using the decays Ξ_b^0→Ξ_c^+π^-,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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
