pdgLive Home   >   Baryon Summary Table   >   ${{\mathit \Lambda}_{{b}}{(6146)}^{0}}$   >   ${{\mathit \Lambda}_{{b}}{(6146)}^{0}}$ MASS

${{\mathit \Lambda}_{{b}}{(6146)}^{0}}$ MASS

${{\mathit \Lambda}_{{b}}{(6146)}^{0}}$ MASS

INSPIRE   PDGID:

B187M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 6146.2 \pm0.4}$ OUR AVERAGE $6146.5 \pm2.1 \pm0.2$ 1 SIRUNYAN 2020 K CMS ${{\mathit p}}{{\mathit p}}$ at 13 TeV $6146.17$ $\pm0.33$ $\pm0.27$ 2 AAIJ 2019 AJ LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV 1  SIRUNYAN 2020K measures $\mathit m({{\mathit \Lambda}_{{b}}{(6146)}^{0}}$) $−$ $\mathit m({{\mathit \Lambda}_{{b}}^{0}}$) = $526.9$ $\pm1.9$ $\pm0.8$ MeV. We have adjusted the measurement to our best value of $\mathit m({{\mathit \Lambda}_{{b}}^{0}}$) = $5619.60$ $\pm0.17$ (MeV). Our first error is their experiment's error and our second error is the systematic error from using our best values. 2  Observed in ${{\mathit \Lambda}_{{b}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ mode.

References:

SIRUNYAN 2020K PL B803 135345 Study of excited $\Lambda_\mathrm{b}^0$ states decaying to $\Lambda_\mathrm{b}^0\pi^+\pi^-$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV AAIJ 2019AJ PRL 123 152001 Observation of New Resonances in the $\Lambda_{b}^0\pi^+\pi^-$ System

Except where otherwise noted, content of the 2023 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2023. See LBNL disclaimers.