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${{\mathit a}_{{{0}}}{(1450)}}$ T-MATRIX POLE $\sqrt {\mathit s }$

INSPIRE   PDGID:

M149PP

Note that $\Gamma $ = $−$2 Im($\sqrt {s }$).

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ (1290 - 1500) − {\mit i} (30 - 140)}$ OUR ESTIMATE $(1302.1 \pm1.1 \pm3.9) − {\mit i} (56.2 \pm0.7 \pm1.7)$ 1 ALBRECHT 2020 RVUE 0.9 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ , ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \pi}^{0}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ $(1515 \pm30) − {\mit i} (115 \pm18)$ ANISOVICH 2009 RVUE 0.0 ${{\overline{\mathit p}}}{{\mathit p}}$, ${{\mathit \pi}}{{\mathit N}}$ $(1432 \pm13 \pm25)−{\mit i}(98 \pm5 \pm5)$ 2 BUGG 2008 A RVUE ${{\overline{\mathit p}}}{{\mathit p}}$ $(1441 {}^{+40}_{-15}) − {\mit i} (55 \pm7)$ 3 BAKER 2003 SPEC ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $(1303 \pm16) − {\mit i} (46 \pm8)$ 4 BARGIOTTI 2003 OBLX ${{\overline{\mathit p}}}{{\mathit p}}$ $(1296 \pm10) − {\mit i} (41 \pm11)$ AMSLER 2002 CBAR $0.9$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ $(1565 \pm30) − {\mit i} (146 \pm20)$ ANISOVICH 1998 B RVUE Compilation $(1470 \pm25)−{\mit i}(132 \pm15)$ 5 AMSLER 1995 D CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ 1  T-matrix pole, 2 poles, 2 channels (${{\mathit \pi}}{{\mathit \eta}}$, ${{\mathit K}}{{\overline{\mathit K}}}$). 2  Using data from AMSLER 1994D, ABELE 1998, and BAKER 2003. Supersedes BUGG 1994. 3  From the pole position of a fitted Breit-Wigner amplitude. 4  Coupled channel analysis of ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$, ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$, and ${{\mathit K}^{\pm}}{{\mathit K}_S^0}$ ${{\mathit \pi}^{\mp}}$. 5  Coupled-channel analysis of AMSLER 1995B, AMSLER 1995C, and AMSLER 1994D.

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