${{\mathit \chi}_{{{c1}}}{(3872)}}$ 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
2020AD
 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
2020S
 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
2008Y
 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3  Superseded by CHOI 2011.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