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The first observation of two structures consistent with resonances in the final states Λ_{b}^{0}π^{-} and Λ_{b}^{0}π^{+} is reported using samples of pp collision data collected by the LHCb experiment at sqrt[s]=7 and 8 TeV, corresponding to an integrated luminosity of 3  fb^{-1}. The ground states Σ_{b}^{±} and Σ_{b}^{*±} are also confirmed and their masses and widths are precisely measured.

Original publication

DOI

10.1103/physrevlett.122.012001

Type

Journal article

Journal

Physical review letters

Publication Date

01/2019

Volume

122

Addresses

Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.

Keywords

LHCb Collaboration