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${{\mathit \pi}{(1800)}}$ WIDTH

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M075W

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 215 {}^{+7}_{-8}}$ OUR AVERAGE $220$ ${}^{+8}_{-11}$ 46M 1 AGHASYAN 2018 B COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ $221$ $\pm26$ $\pm38$ 4k 2 EUGENIO 2008 B852 - 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$ $223$ $\pm48$ $\pm50$ 3 CHUNG 2002 B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$ $191$ $\pm21$ $\pm20$ 4 CHUNG 2002 B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$ $210$ $\pm30$ $\pm30$ 1.2k AMELIN 1996 B VES - 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit A}}$ $190$ $\pm15$ $\pm15$ 5 AMELIN 1995 B VES - 36 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ $210$ $\pm70$ 6 BERDNIKOV 1994 VES - 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ $225$ $\pm35$ $\pm20$ BELADIDZE 1992 C VES - 36 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ ${{\mathit \pi}^{-}}$ ${{\mathit \eta}^{\,'}}$ ${{\mathit \eta}}$ ${}^{}\mathrm {Be}$ $205$ $\pm18$ $\pm32$ 426 BITYUKOV 1991 VES - 36 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {C}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \eta}}{{\mathit \eta}}{}^{}\mathrm {C}$ $310$ $\pm50$ 1.1k BELLINI 1982 SPEC - 40 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {A}$ $\rightarrow$ 3 ${{\mathit \pi}}{}^{}\mathrm {A}$ • • We do not use the following data for averages, fits, limits, etc. • • $208$ $\pm22$ ${}^{+21}_{-37}$ 420k 7 ALEKSEEV 2010 COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$ $259$ $\pm19$ $\pm6$ AMELIN 1999 VES 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit A}^{*}}$ 1  Statistical error negligible. 2  From a single-pole fit. 3  In the ${{\mathit f}_{{0}}{(980)}}{{\mathit \pi}}$ wave. 4  In the ${{\mathit f}_{{0}}{(500)}}{{\mathit \pi}}$ wave. 5  From a fit to $\mathit J{}^{PC} = 0{}^{-+}$ ${{\mathit f}_{{0}}{(980)}}{{\mathit \pi}}$ , ${{\mathit f}_{{0}}{(1370)}}{{\mathit \pi}}$ waves. 6  From a fit to $\mathit J{}^{PC} = 0{}^{-+}$ ${{\mathit K}_{{0}}^{*}{(1430)}}{{\mathit K}^{-}}$ and ${{\mathit f}_{{0}}{(980)}}{{\mathit \pi}^{-}}$ waves. 7  Superseded by AGHASYAN 2018B.

References:

AGHASYAN 2018B PR D98 092003 Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$ ALEKSEEV 2010 PRL 104 241803 Observation of a $\mathit J{}^{PC} = 1-+$ Exotic Resonance in Diffractive Dissociation of 190 GeV/$\mathit c$ ${{\mathit \pi}^{-}}$ into ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$ EUGENIO 2008 PL B660 466 Observation of the ${{\mathit \pi}{(1800)}}$ and ${{\mathit \pi}_{{2}}{(1880)}}$ Mesons in ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}$ Decay CHUNG 2002 PR D65 072001 Exotic and ${\mathit {\mathit q}}{\mathit {\overline{\mathit q}}}$ Resonances in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ System Produced in ${{\mathit \pi}^{-}}{{\mathit p}}$ Collisions at 18-GeV/$\mathit c$ AMELIN 1999 PAN 62 445 Investigation of the Reaction ${{\mathit \pi}^{-}}$ ${+}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{+}$ ${{\mathit A}}$ AMELIN 1996B PAN 59 976 Study of Diffractive Reaction ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit A}}$ at the Momentum P$_{{{\mathit \pi}^{-}}}$ = 37 ${\mathrm {GeV/}}\mathit c$ AMELIN 1995B PL B356 595 Study of Resonance Production in Diffractive Reaction ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ BERDNIKOV 1994 PL B337 219 Study of the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ at 37 ${\mathrm {GeV/}}\mathit c$ BELADIDZE 1992C SJNP 55 1535 Study of the Process ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \eta}^{\,'}}{{\mathit \eta}}{{\mathit A}}$ at 36 ${\mathrm {GeV/}}\mathit c$ BITYUKOV 1991 PL B268 137 Observation of Resonance with Mass M = 1814 MeV Decaying into ${{\mathit \pi}^{-}}{{\mathit \eta}}{{\mathit \eta}}$ BELLINI 1982 PRL 48 1697 Evidence for New $0{}^{-}{}^{}$ S Resonances in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ Systems