A search for baryon-number violating Ξb0 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 Ξb0 come from the decay of a resonance Ξb*- -> Ξb0π- or Ξb'- -> Ξb0π-, and the baryon number at the moment of decay is identified from the final state using the decays Ξb0-> Ξc+π- , Ξc+->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
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Search for Baryon-Number Violating Ξb0 Oscillations. PHYSICAL REVIEW LETTERS, 119(18) [10.1103/PhysRevLett.119.181807].
Search for Baryon-Number Violating Ξb0 Oscillations
Belloli, N.;Borgheresi, A.;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;Fazzini, D.;Gotti, C.
;Grillo, L.;Martinelli, M.;Matteuzzi, C.;Petruzzo, M.;
2017
Abstract
A search for baryon-number violating Ξb0 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 Ξb0 come from the decay of a resonance Ξb*- -> Ξb0π- or Ξb'- -> Ξb0π-, and the baryon number at the moment of decay is identified from the final state using the decays Ξb0-> Ξc+π- , Ξc+->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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