Hunting for the $X_b$ via hidden bottomonium decays

Abstract

In this work, we study the isospin conserved hidden bottomonium decay of $X_b\to {\rm Y}(1S)\omega$, where $X_b$ is taken to be the counterpart of the famous $X(3872)$ in the bottomonium sector as a candidate for the meson-meson molecule. Since it is likely that the $X_b$ is below the $B{\bar{B}}^{\ast }$ threshold and the mass difference between the neutral and charged bottom meson is small compared to the binding energy of the $X_b$, the isospin violating decay mode $X_b\to {\rm Y}(nS){\pi }^{+}{\pi }^{-}$ would be greatly suppressed. We use the effective Lagrangian based on the heavy quark symmetry to explore the rescattering mechanism of $X_b\to {\rm Y}(1S)\omega$ and calculate the partial widths. Our results show that the partial width for the $X_b\to {\rm Y}(1S)\omega$ is about tens of keVs. Taking into account the fact that the total width of $X_b$ may be smaller than a few MeV like $X(3872)$, the calculated branching ratios may reach to orders of $10^{-2}$. These hidden bottomonium decay modes are of great importance in the experimental search for the $X_b$ particularly at the hadron collider. Also, the associated studies of hidden bottomonium decays $X_b\to {\rm Y}(nS)\gamma$, ${\rm Y}(nS)\omega$, and $B\bar{B}\gamma$ may help us investigate the structure of $X_b$ deeply. The experimental observation of $X_b$ will provide us with further insight into the spectroscopy of exotic states and is helpful to probe the structure of the states connected by the heavy quark symmetry.

arXiv comment9 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1402.6463

References in corpus (66)

• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Modern Theory of Nuclear Forces
• Heavy quarkonium: progress, puzzles, and opportunities
• Phenomenology of Heavy Meson Chiral Lagrangians
• The New Heavy Mesons: A Status Report
• 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
• From the Deuteron to Deusons, an Analysis of Deuteronlike Meson-Meson Bound States
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Charmonium
• Evidence that the a0(980) and f0(980) are not elementary particles
• Final State Interactions in Hadronic B Decays
• Determination of the X(3872) meson quantum numbers
• Decoding the riddle of Y(4260) and $Z_c(3900)$
• Consequences of Heavy Quark Symmetries for Hadronic Molecules
• The Exotic XYZ Charmonium-like Mesons
• Quarkonia and their transitions
• Heavy quark spin structure in Z_b resonances
• Pion Interactions in the X(3872)
• Is the X(3872) Production Cross Section at Tevatron Compatible with a Hadron Molecule Interpretation?
• Charming penguins in B => K* pi, K (rho,omega,phi) decays
• X(3872): Hadronic Molecules in Effective Field Theory
• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• Production of the X(3872) at the Tevatron and the LHC
• Nonfactorizable contributions in B decays to charmonium: the case of $B^{-}\to K^{-}{h}_c$
• Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV
• Radiative transitions from Upsilon(5S) to molecular bottomonium
• Effect of charmed meson loops on charmonium transitions
• Production of the X(3872) in charmonia radiative decays
• Heavy Quark Symmetry Predictions for Weakly Bound B-Meson Molecules
• Power Counting and Perturbative One Pion Exchange in Heavy Meson Molecules
• Reproducing the $Z_c(3900)$ structure through the initial-single-pion-emission mechanism
• Precision Measurement of the X(3872) Mass in J/psi pi+ pi- Decays
• Rates for the reactions antiproton-proton --> pi phi and gamma phi
• Exploring the threshold behavior and implications on the nature of Y(4260) and $Z_c(3900)$
• Confirming the molecular nature of the $Z_b(10610)$ and the $Z_b(10650)$
• $Z_b(10610)$ and $Z_b(10650)$ structures produced by the initial single pion emission in the ${\rm Y}(5S)$ decays
• 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
• Heavy quark spin selection rule and the properties of the X(3872)
• Extraction of the light quark mass ratio from the decays psi' --> J/psi pi^0 (eta)
• A Mechanism for Hadron Molecule Production in p pbar(p) Collisions
• g(B*Bpi)-coupling in the static heavy quark limit
• Final State Interaction In $B\to KK$ Decays
• Charged bottomonium-like states $Z_b(10610)$ and $Z_b(10650)$ and the ${\rm Y}(5S)\to {\rm Y}(2S){\pi }^{+}{\pi }^{-}$ decay
• $Z_b/Z_b^{\prime }\to {\rm Y}\pi$ and $h_b\pi$ decays in intermediate meson loops model
• Estimating the Production Rate of Loosely-bound Hadronic Molecules using Event Generators
• 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
• Novel analysis of the decays psi' -> h_c pi^0 and eta_c'-> chi_{c0} pi^0
• Searching for the Bottom Counterparts of X(3872) and Y(4260) via ${\pi }^{+}{\pi }^{-}{\rm Y}$
• Search for a new bottomonium state decaying to Upsilon(1S) pi+ pi- in pp collisions at sqrt(s) = 8 TeV
• Investigating possible decay modes of $Y(4260)$ under the $D_1(2420)\bar{D}+c.c$ molecular state ansatz
• Heavy quark spin symmetry breaking in near-threshold $J^{PC}=1^{--}$ quarkonium-like resonances
• Production of charged heavy quarkonium-like states at the LHC and the Tevatron
• Significance of Single Pion Exchange Inelastic Final State Interaction for D->VP Processes
• Suppression of the S-wave production of (3/2)^+ + (1/2)^- heavy meson pairs in e^+e^- annihilation
• Hunting for the X_b via Radiative Decays
• Enhanced mixing of partial waves near threshold for heavy meson pairs and properties of $Z_b(10610)$ and $Z_b(10650)$ resonances
• Charged bottomonium-like structures in the hidden-bottom dipion decays of ${\rm Y}(11020)$
• Interpretation of $Z_b(10610)$ and $Z_b(10650)$ in the ISPE mechanism and the Charmonium Counterpart
• Novel charged charmoniumlike structures in the hidden-charm dipion decays of Y(4360)
• Hadroproduction of ${\rm Y}(nS)$ above $B\bar{B}$ Thresholds and Implications for $Y_b(10890)$
• Measurement of the Mass of the D0 Meson
• Search for $J^{PC}=1^{-+}$ exotic state in $e^{+}{e}^{-}$ annihilation
• Mixing of partial waves near $B^{\ast }{\bar{B}}^{\ast }$ threshold in $e^{+}{e}^{-}$ annihilation

Cited by in corpus (12)

• The hidden-charm pentaquark and tetraquark states
• The $XYZ$ states: experimental and theoretical status and perspectives
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Fully Heavy Tetraquark $bb\bar{c}\bar{c}$: Lifetimes and Weak Decays
• Weak Decays of Triply Heavy Tetraquarks $b\bar{c}b\bar{q}$
• Exploring the ${\rm Y}(4S,5S,6S)\to h_b(1P)\eta$ hidden-bottom hadronic transitions
• Weak Decays of Doubly-Heavy Tetraquarks $b\bar{c}q\bar{q}$
• Possible hadronic molecular states composed of $S$-wave heavy-light mesons
• Hidden-bottom hadronic transitions of ${\rm Y}(10753)$
• Hunting for $X_b$ via hidden bottomonium decays $X_b\to \pi \pi {\chi }_{bJ}$
• Study on the radiative decays of $h_c$ via intermediate meson loops model
• Evasion of HSR in the charmless decays of excited $P$-wave charmonia