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${{\mathit \chi}_{{c1}}{(3872)}}$ WIDTH

INSPIRE   PDGID:

M176W

VALUE (MeV) CL% EVTS DOCUMENT ID TECN  COMMENT $\bf{ 1.19 \pm0.21}$ OUR AVERAGE  Error includes scale factor of 1.1. $1.39$ $\pm0.24$ $\pm0.10$ 15.6k 1 AAIJ 2020 AD LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit X}}$ $0.96$ ${}^{+0.19}_{-0.18}$ $\pm0.21$ 4.2k 2 AAIJ 2020 S LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{+}}$ • • We do not use the following data for averages, fits, limits, etc. • • $<2.4$ 90 ABLIKIM 2014 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $<1.2$ 90 CHOI 2011 BELL ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ $<3.3$ 90 AUBERT 2008 Y BABR ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $<4.1$ 90 69 AUBERT 2006 BABR ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ $<2.3$ 90 36 3 CHOI 2003 BELL ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ 1  Using ${{\mathit \chi}_{{c1}}{(3872)}}$ produced in inclusive ${{\mathit b}}$-hadron decays. Breit-Wigner parametrization. 2  Using Breit-Wigner parametrization. Partially overlapping dataset with that of AAIJ 2020AD. 3  Superseded by CHOI 2011 .

References:

AAIJ 2020AD PR D102 092005 Study of the lineshape of the $\chi_{c1}(3872)$ state AAIJ 2020S JHEP 2008 123 Study of the $\psi_2(3823)$ and $\chi_{c1}(3872)$ states in $B^+ \rightarrow \left( J\psi\pi^+\pi^-\right)K^+$ decays ABLIKIM 2014 PRL 112 092001 Observation of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}{(3872)}}$ at BESIII CHOI 2011 PR D84 052004 Bounds on the Width, Mass Difference and other Properties of ${{\mathit X}{(3872)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ Decays AUBERT 2008Y PR D77 111101 Study of ${{\mathit B}}$ $\rightarrow$ ${{\mathit X}{(3872)}}{{\mathit K}}$ , with ${{\mathit X}{(3872)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ AUBERT 2006 PR D73 011101 Study of the ${{\mathit X}{(3872)}}$ and ${{\mathit Y}{(4260)}}$ in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{0}}$ and ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{-}}$ Decays CHOI 2003 PRL 91 262001 Observation of a Narrow Charmoniumlike State in Exclusive ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ Decay