Observation of Two Resonances in the Λb0 π± Systems and Precise Measurement of Σb± and Σb∗± Properties

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Abstract

The first observation of two structures consistent with resonances in the final states Λb0π- and Λb0π+ is reported using samples of pp collision data collected by the LHCb experiment at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The ground states Σb± and Σb∗± are also confirmed and their masses and widths are precisely measured.

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Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Aidala, C. A., Ajaltouni, Z., … Zucchelli, S. (2019). Observation of Two Resonances in the Λb0 π± Systems and Precise Measurement of Σb± and Σb∗± Properties. Physical Review Letters, 122(1). https://doi.org/10.1103/PhysRevLett.122.012001

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