Searching for the Bottom Counterparts of X(3872) and Y(4260) via ${\pi }^{+}{\pi }^{-}{\rm Y}$

Abstract

The X(3872) and Y(4260), among a host of charmonium-like mesons, have rather unusual properties: the former has very small total width, the latter has large rate into ${\pi }^{+}{\pi }^{-}J/\psi$ channel. It would not be easy to settle between the many suggested explanations for their composition. We point out that discovering the bottom counterparts should shed much light on the issue. The narrow state can be searched for at the Tevatron via $p\bar{p}\to {\pi }^{+}{\pi }^{-}{\rm Y}+X$, but the LHC should be much more promising. The state with large overlap with ${\rm Y}$ can be searched for at B factories via radiative return $e^{+}{e}^{-}\to {\gamma }_{\mathrm{ISR}}+{\pi }^{+}{\pi }^{-}{\rm Y}$ on ${\rm Y}(5S)$, or by $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\rm Y}$ direct scan.

arXiv comment4 pages, no figures, version to appear in PRD; expanded, including comments on LHCb

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• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• The Exotic XYZ Charmonium-like Mesons
• Can the X(3872) be a 1^{++} four-quark state?
• Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance
• A New Hadron Spectroscopy
• A case for hidden $b\bar{b}$ tetraquarks based on $e^{+}{e}^{-}\to b\bar{b}$ cross section between $\sqrt{s}=10.54$ and 11.20 GeV
• Tetraquark interpretation of the BELLE data on the anomalous ${\rm Y}(1S){\pi }^{+}{\pi }^{-}$ and ${\rm Y}(2S){\pi }^{+}{\pi }^{-}$ production near the ${\rm Y}(5S)$ resonance
• Scalar Resonance Contributions to the Dipion Transition Rates of ${\rm Y}(4S,5S)$ in the re-scattering model
• Observation of an enhancement in e+e- to Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and Upsilon(3S)pi+pi- production near sqrt{s}=10.89 GeV at Belle
• Observation of an enhancement in $e^{+}{e}^{-}\to {\rm Y}(1S){\pi }^{+}{\pi }^{-}$, ${\rm Y}(2S){\pi }^{+}{\pi }^{-}$, and ${\rm Y}(3S){\pi }^{+}{\pi }^{-}$ production around $\sqrt{s}=10.89$ GeV at Belle
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Observation of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0{\chi }_{bJ}$ and search for $X_b\to \omega {\rm Y}(1S)$ at $\sqrt{s}\sim 10.867$ GeV
• Production of the bottom analogues and the spin partner of the X(3872) at hadron colliders
• Search for a new bottomonium state decaying to Upsilon(1S) pi+ pi- in pp collisions at sqrt(s) = 8 TeV
• Peak shifts due to $B^{(\ast )}-{\bar{B}}^{(\ast )}$ rescattering in ${\rm Y}(5S)$ dipion transitions
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• Hadronic Spectrum - Multiquark States
• Search for the $X_b$ and other hidden-beauty states in the ${\pi }^{+}{\pi }^{-}{\rm Y}(1\mathrm{S})$ channel at ATLAS
• Relativistic model of hidden bottom tetraquarks
• Hunting for the X_b via Radiative Decays
• Hunting for the $X_b$ via hidden bottomonium decays
• Possible hadronic molecular states composed of $S$-wave heavy-light mesons
• Tetraquark states in the bottom sector and the status of the $Y_b$(10890) state
• Does the bottomonium counterpart of $X(3872)$ exist?
• Heavy Hadron Spectroscopy
• QCD Exotics
• Hunting for $X_b$ via hidden bottomonium decays $X_b\to \pi \pi {\chi }_{bJ}$
• Perspectives and Outlook from HEP Window on the Universe
• $B^{(\ast )}{\bar{B}}^{(\ast )}$ intermediate state contribution to ${\rm Y}(4S,5S)\to {\eta }_b+\gamma$ radiative decay
• Predictions for Bottomonium from a Relativistic Screened Potential Model
• Production of hidden-heavy and double-heavy hadronic molecules at the $Z$ factory of CEPC
• Exotic hadrons associated with $b$-quark