Abstract
A new experimental technique to study the decays of \( {B}_s^0 \) mesons into final states involving unreconstructable particles is proposed. The method uses a characteristic feature of fast flavour oscillations of \( {B}_s^0 \) mesons. Analysis of the oscillation-frequency spectrum of partially reconstructed flavour-tagged \( {B}_s^0 \) decays provides information about the mass spectrum of unreconstructed decay products and suppresses any background that does not come from the decays of \( {B}_s^0 \) mesons.
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ArXiv ePrint: 1911.12729
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Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
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Poluektov, A., Morris, A. Oscillations of \( {B}_s^0 \) Mesons as a Probe of Decays with Unreconstructed Particles. J. High Energ. Phys. 2020, 163 (2020). https://doi.org/10.1007/JHEP02(2020)163
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DOI: https://doi.org/10.1007/JHEP02(2020)163