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${{\mathit a}_{{0}}{(980)}}$ MASS

${{\mathit K}}{{\overline{\mathit K}}}$ ONLY

INSPIRE   PDGID:

M036M2

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $947.7$ ${}^{+5.5}_{-5.0}$ $\pm6.6$ 1 AAIJ 2019 H LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{\pm}}{{\mathit X}}$ $925$ $\pm5$ $\pm8$ 190k 2 AAIJ 2016 N LHCB ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $\sim{}\text{ 1053}$ 3 OLLER 1999 C RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ $975$ $\pm15$ BERTIN 1998 B OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}_{{s}}}{{\mathit \pi}^{\mp}}$ $970$ $\pm10$ 316 DEBILLY 1980 HBC 1.2$-$2 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit f}_{{1}}{(1285)}}{{\mathit \omega}}$ $1016$ $\pm10$ 100 4 ASTIER 1967 HBC 0.0 ${{\overline{\mathit p}}}{{\mathit p}}$ $1003.3$ $\pm7.0$ 143 5, 6 ROSENFELD 1965 RVUE 1  From the ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ Dalitz plot fit with the Triple-M amplitude in the multimeson model of AOUDE 2018 . 2  Using a two-channel resonance parametrization with couplings fixed to ABELE 1998 . 3  T-matrix pole. 4  ASTIER 1967 includes data of BARLOW 1967 , CONFORTO 1967 , ARMENTEROS 1965 . 5  Note on $\mathit J{}^{P}$. Main argument for $0{}^{+}{}^{}$ is small $\mathit Q$ value. Isotropy of decay distribution in ${{\overline{\mathit p}}}{{\mathit p}}$ at rest proves nothing. See discussion by Rosenfeld (Oxford) and Butterworth (Heidelberg). 6  Plus systematic errors.

References:

AAIJ 2019H JHEP 1904 063 Dalitz plot analysis of the $D^+\to K^-K^+K^+$ decay AAIJ 2016N PR D93 052018 Studies of the Resonance Structure in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ Decays OLLER 1999C PR D60 074023 N/D Description of Two Meson Amplitudes and Chiral Symmetry BERTIN 1998B PL B434 180 Study of the Isovector Scalar Mesons in the Channel ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}_S^0}$ ${{\mathit \pi}^{\mp}}$ at Rest with Initial Angular Momentum State DEBILLY 1980 NP B176 1 Spin and Parity of the ${{\mathit D}{(1285)}^{0}}$ Meson ASTIER 1967 PL 25B 294 Further Study of the $\mathit I = 1$ ${{\mathit K}}{{\overline{\mathit K}}}$ Structure near Threshold. ROSENFELD 1965 Oxford Conf. 58 Mesons

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