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${\mathit m}_{{{\mathit B}^{*}}}–{\mathit m}_{{{\mathit B}}}$

INSPIRE   PDGID:

S085DM

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 45.21 \pm0.21}$ OUR FIT $\bf{ 45.42 \pm0.26}$ OUR AVERAGE includes data from ${\mathit m}_{{{\mathit B}^{*+}}}–{\mathit m}_{{{\mathit B}^{+}}}$ $46.2$ $\pm0.3$ $\pm0.8$ 1 ACKERSTAFF 1997 M OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $45.3$ $\pm0.35$ $\pm0.87$ 4227 1 BUSKULIC 1996 D ALEP ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $88 - 94$ GeV $45.5$ $\pm0.3$ $\pm0.8$ 1 ABREU 1995 R DLPH ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $88 - 94$ GeV $46.3$ $\pm1.9$ 1378 1 ACCIARRI 1995 B L3 ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $88 - 94$ GeV $46.4$ $\pm0.3$ $\pm0.8$ 2 AKERIB 1991 CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X $45.6$ $\pm0.8$ 2 WU 1991 CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X, ${{\mathit \gamma}}{{\mathit \ell}}$ X $45.4$ $\pm1.0$ 3 LEE-FRANZINI 1990 CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(5S)}}$ • • We do not use the following data for averages, fits, limits, etc. • • $52$ $\pm2$ $\pm4$ 1400 4 HAN 1985 CUSB ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit e}}$ X 1  ${{\mathit u}}$, ${{\mathit d}}$, ${{\mathit s}}$ flavor averaged. 2  These papers report $\mathit E_{{{\mathit \gamma}}}$ in the ${{\mathit B}^{*}}$ center of mass. The ${\mathit m}_{{{\mathit B}^{*}}}–{\mathit m}_{{{\mathit B}}}$ is $0.2$ MeV higher. $\mathit E_{{\mathrm {cm}}}$ = $10.61 - 10.7$ GeV. Admixture of ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ mesons, but not ${{\mathit B}_{{s}}}$. 3  LEE-FRANZINI 1990 value is for an admixture of ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$. They measure $46.7$ $\pm0.4$ $\pm0.2$ MeV for an admixture of ${{\mathit B}^{0}}$, ${{\mathit B}^{+}}$, and ${{\mathit B}_{{s}}}$, and use the shape of the photon line to separate the above value. 4  HAN 1985 is for $\mathit E_{{\mathrm {cm}}}$ = $10.6 - 11.2$ GeV, giving an admixture of ${{\mathit B}^{0}}$, ${{\mathit B}^{+}}$, and ${{\mathit B}_{{s}}}$.

References:

ACKERSTAFF 1997M ZPHY C74 413 ${{\mathit B}^{*}}$ Production in ${{\mathit Z}^{0}}$ Decays BUSKULIC 1996D ZPHY C69 393 Production of Excited Beauty States in ${{\mathit Z}}$ Decays ABREU 1995R ZPHY C68 353 ${{\mathit B}^{*}}$ Production in ${{\mathit Z}}$ Decays ACCIARRI 1995B PL B345 589 ${{\mathit B}^{*}}$ Production in ${{\mathit Z}}$ Decays at LEP AKERIB 1991 PRL 67 1692 Measurement of the Inclusive ${{\mathit B}^{*}}$ Cross Section above the ${{\mathit \Upsilon}{(4S)}}$ WU 1991 PL B273 177 Measurement of the ${{\mathit B}^{*}}$ Cross Section at $\sqrt {s }$ = 10.61 to 10.70 GeV LEE-FRANZINI 1990 PRL 65 2947 Hyperfine Splitting of ${{\mathit B}}$ Mesons and ${{\mathit B}_{{s}}}$ Production at the ${{\mathit \Upsilon}{(5S)}}$ HAN 1985 PRL 55 36 Observation of ${{\mathit B}^{*}}$ Production in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Interactions above the ${{\mathit b}}$-Flavor Threshold