Search for Bottom Counterparts of X(3872) and Y(4260) via $π^+π^-Υ$

Details Search for Bottom Counterparts of X(3872) and Y(4260) via $π^+π^-Υ$ Search for Bottom Counterparts of X(3872) and Y(4260) via $π^+π^-Υ$

2006-11-11

arxiv.org/abs/hep-ph/0611153v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, no figures, presented at ICHEP 2006

Scientific paper

The X(3872) and Y(4260), both discovered in $\pi^+\pi^- J/\psi$ mode, are rather unusual: $X_c\equiv X(3872)$ is very narrow, while $Y_c \equiv Y(4260)$ has large $Y_c\to \pi^+\pi^-J/\psi$ width. Many models for their composition have been suggested, but perhaps discovering their bottom counterparts could shed much light on the issue. The narrow state, $X_b$ may be searched for at the Tevatron via $p\bar p \to \pi^+\pi^-\Upsilon + X$, with the LHC much more promising. The state $Y_b$ can be searched for at B factories via radiative return $e^+e^- \to \gamma_{\rm ISR} + \pi^+\pi^-\Upsilon$ on $\Upsilon(5S)$, or by $e^+e^- \to \pi^+\pi^-\Upsilon$ direct scan.

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