Abstract / Description of output
A search for baryon-number-violating $\Xi_b^0$ 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 $\Xi_b^0$ come from the decay of a resonance $\Xi_b^{*-} \to \Xi_b^0 \pi^-$ or $\Xi_b^{\prime-} \to \Xi_b^0 \pi^-$, and the baryon number at the moment of decay is identified from the final state using the decays $\Xi_b^0 \to \Xi_c^+ \pi^-, ~ \Xi_c^+ \to p K^- \pi^+$. No evidence of baryon number violation is found, and an upper limit at the 95% confidence level is set on the oscillation rate of $\omega <0.08$ ps$^{-1}$, where $\omega$ is the associated angular frequency.
Original language | English |
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Article number | Aaij:2017inn |
Pages (from-to) | 181807 |
Journal | Physical Review Letters |
Volume | 119 |
Issue number | 18 |
DOIs | |
Publication status | Published - 3 Nov 2017 |