pdgLive Home   >   ${\mathit {\mathit b}}$ ${\mathit {\overline{\mathit b}}}$ MESONS (including possibly non-${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ states)   >   ${{\mathit \chi}_{{{b1}}}{(3P)}}$   >   ${{\mathit \chi}_{{{b1}}}{(3P)}}$ MASS

${{\mathit \chi}_{{{b1}}}{(3P)}}$ MASS

INSPIRE   JSON  (beta) PDGID:

M206M

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $10513.42$ $\pm0.41$ $\pm0.53$ 1 SIRUNYAN 2018 N CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ • • We do not use the following data for averages, fits, limits, etc. • • $10515.7$ ${}^{+2.2}_{-3.9}$ ${}^{+1.5}_{-2.1}$ 169 2 AAIJ 2014 BG LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $10512.1$ $\pm2.1$ $\pm0.9$ 351 3 AAIJ 2014 BG LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $10511.3$ $\pm1.7$ $\pm2.5$ 182 4 AAIJ 2014 BI LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $10530$ $\pm5$ $\pm9$ 5 AAD 2012 A ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $10551$ $\pm14$ $\pm17$ 5 ABAZOV 2012 Q D0 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ 1  Systematic error includes an additional 0.5 MeV for the uncertainty on the ${{\mathit \Upsilon}{(3S)}}$ mass. Also measures ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(3P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(3P)}}}$ = $10.60$ $\pm0.64$ $\pm0.17$ MeV. A total of 372 ${{\mathit \chi}_{{{b1}}}{(3P)}}$ and ${{\mathit \chi}_{{{b2}}}{(3P)}}$ events was observed. 2  From ${{\mathit \chi}_{{{b1}}}{(3P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(1S,2S)}}{{\mathit \gamma}}$ transitions assuming ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(3P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(3P)}}}$ = $10.5$ $\pm1.5$ MeV and allowing for $\pm30\%$ variation in the ${{\mathit \chi}_{{{b2}}}{(3P)}}$ production rate relative to that of ${{\mathit \chi}_{{{b1}}}{(3P)}}$. 3  The mass of the ${{\mathit \chi}_{{{b1}}}{(3P)}}$ state obtained by combining the results of AAIJ 2014BG with that of AAIJ 2014BI. The first uncertainty is experimental and the second attributable to the unknown mass splitting, assumed to be ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(3P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(3P)}}}$ = $10.5$ $\pm1.5$ MeV. 4  From ${{\mathit \chi}_{{{b1}}}{(3P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(3S)}}{{\mathit \gamma}}$ transition assuming ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(3P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(3P)}}}$ = $10.5$ $\pm1.5$ MeV. 5  The mass barycenter of the merged lineshapes from the $\mathit J = 1$ and 2 states.

References