Observation of Two Excited ${B}_{c}^{+}$ States and Measurement of the ${B}_{c}^{+}(2S)$ Mass in $pp$ Collisions at $\sqrt{s}=13\text{ }\text{ }\mathrm{TeV}$
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Author(s): A. M. Sirunyan et al. (CMS Collaboration)A huge dataset recorded at the highest particle collision energy so-far…