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

Abstract

We study the spectroscopy and dominant decays of the bottomonium-like tetraquarks (bound diquarks-antidiquarks), focusing on the lowest lying P-wave $[bq][\bar{b}\bar{q}]$ states $Y_{[bq]}$ (with $q=u,d$), having $J^{PC}=1^{--}$. To search for them, we analyse the BABAR data \cite{:2008hx} obtained during an energy scan of the $e^{+}{e}^{-}\to b\bar{b}$ cross section in the range of $\sqrt{s}=10.54$ to 11.20 GeV. We find that these data are consistent with the presence of an additional $b\bar{b}$ state $Y_{[bq]}$ with a mass of 10.90 GeV and a width of about 30 MeV apart from the ${\rm Y}(5S)$ and ${\rm Y}(6S)$ resonances. A closeup of the energy region around the $Y_{[bq]}$-mass may resolve this state in terms of the two mass eigenstates, $Y_{[b,l]}$ and $Y_{[b,h]}$, with a mass difference, estimated as about 6 MeV. We tentatively identify the state $Y_{[bq]}(10900)$ from the $R_b$-scan with the state $Y_b(10890)$ observed by BELLE \cite{Abe:2007tk} in the process $e^{+}{e}^{-}\to Y_b(10890)\to {\rm Y}(1S,2S){\pi }^{+}{\pi }^{-}$ due to their proximity in masses and decay widths.

17 pages, 2 figures; typos removed and text slightly modified; version identical to the one published in Physics Letters B

References in corpus (45)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Diquarks and Exotic Spectroscopy
• Observation of the Narrow State $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$
• Exotica
• Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) Collisions at sqrt(s) = 1.96 TeV
• Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Short Range Structure in the X(3872)
• A Theory of Scalar Mesons
• Low-energy Universality and the New Charmonium Resonance at 3870 MeV
• Gluonic charmonium resonances at BaBar and Belle?
• Insight into the Scalar Mesons from a Lattice Calculation
• X(3872) and Other Possible Heavy Molecular States
• Four Quark Interpretation of Y(4260)
• Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle
• Is the X(3872) Production Cross Section at Tevatron Compatible with a Hadron Molecule Interpretation?
• Is X(3872) a molecule?
• Suppressed decay into open charm for the Y(4260) being an hybrid
• Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance
• Hadronic molecule structure of the Y(3940) and Y(4140)
• A Structure at 2175 MeV in $e^{+}{e}^{-}\to \varphi f_0(980)$ Observed via Initial-State Radiation
• Observation of Y(2175) in $J/\psi \to \eta \varphi f_0(980)$
• Y(4143) is probably a molecular partner of Y(3930)
• Observation of the $\varphi (1680)$ and the Y(2175) in $e^{+}{e}^{-}\to \varphi {\pi }^{+}{\pi }^{-}$
• Evidence for diquarks in lattice QCD
• Is Z^+(4430) a loosely bound molecular state?
• Scalar Mesons a0(1450) and sigma(600) from Lattice QCD
• Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV
• Possible Molecular Structure of the Newly Observed Y(4260)
• Exotic Hadrons with Hidden Charm and Strangeness
• Higher Tetraquark Particles
• Heavy quark spin selection rule and the properties of the X(3872)
• QCD sum rules study of the meson Z^+(4430)
• Threshold effect and π^\pm ψ(2S) peak
• A lattice study of light scalar tetraquarks
• Searching for the Bottom Counterparts of X(3872) and Y(4260) via ${\pi }^{+}{\pi }^{-}{\rm Y}$
• Tetra-Quark Resonances in Lattice QCD
• Relativistic model of hidden bottom tetraquarks
• The Lost Tribes of Charmonium
• QQ-onia package: a numerical solution to the Schrodinger radial equation for heavy quarkonium
• Scalar and Vector 4Q Systems in Anisotropic Lattice QCD
• Lowest-lying Tetra-Quark Hadrons in Anisotropic Lattice QCD

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• Interpreting the $X(5568)$
• 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
• 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
• Hidden charm octet tetraquarks from a diquark-antidiquark model
• Analysis of the scalar and axial-vector heavy diquark states with QCD sum rules
• Hidden-Beauty Charged Tetraquarks and Heavy Quark Spin Conservation
• Tetraquark-based analysis and predictions of the cross sections and distributions for the processes e^+ e^- --> Upsilon(1S) (pi^+ pi^-, K^+ K^-, eta pi^0) near Upsilon(5S)
• 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 Exotic $1^{--}$ Hadrons $\varphi (2170)$, X(4260) and $Y_b(10890)$ at the LHC and Tevatron via the Drell-Yan Mechanism
• Production of the bottom analogues and the spin partner of the X(3872) at hadron colliders
• A tetraquark or not a tetraquark: A holography inspired stringy hadron (HISH) perspective
• Heavy quark symmetry and weak decays of the $b$-baryons in pentaquarks with a $c\bar{c}$ component
• Excited mesons, baryons, glueballs and tetraquarks: Predictions of the Holography Inspired Stringy Hadron model
• Dipion invariant mass distribution of the anomalous ${\rm Y}(1S){\pi }^{+}{\pi }^{-}$ and ${\rm Y}(2S){\pi }^{+}{\pi }^{-}$ production near the peak of ${\rm Y}(10860)$
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• Measurements of the ${\rm Y}(10860)$ and ${\rm Y}(11020)$ resonances via $\sigma (e^{+}{e}^{-}\to {\rm Y}(n\mathrm{S}){\pi }^{+}{\pi }^{-})$
• Hunting for the X_b via Radiative Decays
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• Doubly charmed tetraquarks in a diquark-antidiquark model
• Observation of $e^{+}{e}^{-}\to \omega {\chi }_{bJ}(1P)$ and search for $X_b\to \omega {\rm Y}(1S)$ at $\sqrt{s}$ near 10.75 GeV
• Could $Y_b(10890)$ be the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark state?
• Mass spectrum of the axial-vector hidden charmed and hidden bottom tetraquark states
• Hadron physics potential of future high-luminosity B-factories at the Upsilon(5S) and above
• Y(4260) --> gamma + X(3872) in the diquarkonium picture
• Hunting for the $X_b$ via hidden bottomonium decays
• Higher Hybrid Bottomonia in an Extended Potential Model
• Production of Charmed Tetraquarks from $B_c$ and $B$ decays
• Hadroproduction of ${\rm Y}(nS)$ above $B\bar{B}$ Thresholds and Implications for $Y_b(10890)$
• Weak Decays of Triply Heavy Tetraquarks $b\bar{c}b\bar{q}$
• Analysis of the scalar doubly heavy tetraquark states with QCD sum rules
• Tetraquark states in the bottom sector and the status of the $Y_b$(10890) state
• Tetraquark Masses by using extension of Gursey-Radicati Mass Formula
• Production of $X_b$ via ${\rm Y}(5S,6S)$ radiative decays
• Hunting for $X_b$ via hidden bottomonium decays $X_b\to \pi \pi {\chi }_{bJ}$
• $B^{(\ast )}{\bar{B}}^{(\ast )}$ intermediate state contribution to ${\rm Y}(4S,5S)\to {\eta }_b+\gamma$ radiative decay
• Bottomonia in an unquenched quark model
• Tetraquark mass relations in quark and diquark models
• Predictions for Bottomonium from a Relativistic Screened Potential Model
• Charged bottomonium-like structures $Z_b(10610)$ and $Z_b(10650)$
• The study of doubly charmed pentaquark $cc\bar{q}qq$ with the SU(3) symmetry
• Charged charmonium-like structures and the initial single chiral particle emission mechanism
• Mass-Spectroscopy of [$bb][\bar{b}\bar{b}$] and [$bq][\bar{b}\bar{q}$] tetraquark states in a diquark-antidiquark formalism
• Exotic hadrons associated with $b$-quark