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${{\mathit \rho}{(770)}}$ T-MATRIX POLE $\sqrt {\mathit s }$

INSPIRE   PDGID:

M009PP

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

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ (761 - 765) − {\mit i} (71 - 74)}$ OUR ESTIMATE $(763.7 {}^{+1.7}_{-1.5}) − {\mit i} (73.2 {}^{+1.0}_{-1.1})$ 1 GARCIA-MARTIN 2011 RVUE Compilation $(754 \pm18) − {\mit i} (74 \pm10)$ 2 PELAEZ 2004 A RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ $(762.4 \pm1.8) − {\mit i} (72.6 \pm1.4)$ COLANGELO 2001 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ 1  Reanalysis of the ${{\mathit K}_{{e4}}}$ data of BATLEY 2010C and the ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}{{\mathit N}}$ data of HYAMS 1973 , GRAYER 1974 , and PROTOPOPESCU 1973 using GKPY equations. 2  Reanalysis of data from PROTOPOPESCU 1973 , ESTABROOKS 1974 , GRAYER 1974 , and COHEN 1980 in the unitarized ChPT model.

References:

GARCIA-MARTIN 2011 PRL 107 072001 Precise Determination of the ${{\mathit f}_{{0}}{(600)}}$ and ${{\mathit f}_{{0}}{(980)}}$ Pole Parameters from a Dispersive Data Analysis PELAEZ 2004A MPL A19 2879 Light Scalars as Tetraquarks or Two-meson States from Large ${{\mathit N}_{{c}}}$ and Unitarized Chiral Perturbation Theory COLANGELO 2001 NP B603 125 ${{\mathit \pi}}{{\mathit \pi}}$ Scattering