The nature of $X(3872)$ from high-multiplicity $pp$ collisions

Abstract

The structure of exotic resonances that do not trivially fit the usual quark model expectations has been a matter of intense scientific debate during the last two decades. A possible way of estimating the size of these states is to study their behavior when immersed in QCD matter. Recently, LHCb has measured the relative abundance of the exotic $X(3872)$ over the ordinary $\psi (2S)$. We use the comover interaction model to study the yield of a compact $X(3872)$. To confirm the reliability of the model in high-multiplicity $pp$ collisions, we describe the suppression of excited over ground ${\rm Y}$ states. With this at hand, we show that the size of the compact $X(3872)$ would be slightly larger than that of the $\psi (2S)$. If the $X(3872)$ is instead assumed to be a meson molecule of large size, we argue that its evolution in QCD matter should be described via a coalescence model, as suggested by data on deuteron production. We show that the predictions of this model for the $X(3872)$ are in contrast with data.

arXiv comment11 pages, 6 figures. Presentation updated, references added, conclusions unchanged. Version accepted in EPJC

References in corpus (68)

• 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
• Hadronic molecules
• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Phenomenology of Heavy Meson Chiral Lagrangians
• The New Heavy Mesons: A Status Report
• Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson
• The D*0 D0bar threshold resonance
• Colour Deconfinement and Quarkonium Binding
• Quarkonium Interactions in Hadronic Matter
• Low-energy Universality and the New Charmonium Resonance at 3870 MeV
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• Four-Quark Hadrons: an Updated Review
• Charmonium and bottomonium production in heavy-ion collisions
• Is the X(3872) Production Cross Section at Tevatron Compatible with a Hadron Molecule Interpretation?
• Interactions of Charmed Mesons with Light Pseudoscalar Mesons from Lattice QCD and Implications on the Nature of the D_{s0}^*(2317)
• Born-Oppenheimer Approximation for the XYZ Mesons
• Elliptic Flow and HBT in non-central Nuclear Collisions
• Sequential Regeneration of Charmonia in Heavy-Ion Collisions
• A New Picture for the Formation and Decay of the Exotic $XYZ$ Mesons
• Jet Quenching and Radiative Energy Loss in Dense Nuclear Matter
• Production of the X(3872) at the Tevatron and the LHC
• Multi-quark hadrons from Heavy Ion Collisions
• Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV
• Study of the lineshape of the ${\chi }_{c1}(3872)$ state
• Non-saturation of the J/psi suppression at large transverse energy in the comovers approach
• Charmed Baryonium
• Quark exchange model for charmonium dissociation in hot hadronic matter
• A Theory of X and Z Multiquark Resonances
• Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider
• A $bb\bar{b}\bar{b}$ di-bottomonium at the LHC?
• Charmonium dissociation and recombination at LHC: Revisiting comovers
• Event activity dependence of Y(nS) production in sqrt(s[NN]) = 5.02 TeV pPb and sqrt(s) = 2.76 TeV pp collisions
• Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons
• Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
• On the coupling of heavy mesons to pions in QCD
• The observation of light nuclei at ALICE and the X(3872) conundrum
• Is bottomonium suppression in proton-nucleus and nucleus-nucleus collisions at LHC energies due to the same effects?
• Charmonium Suppression in Lead-Lead Collisions: Is There a Break in the $J/\psi$ Cross-Section?
• A quantitative reanalysis of charmonium suppression in nuclear collisions
• Deciphering the nature of X(3872) in heavy ion collisions
• A Mechanism for Hadron Molecule Production in p pbar(p) Collisions
• X(3872) and its production at hadron colliders
• Production of Tetraquarks at the LHC
• Hadronic effects on the X(3872) meson abundance in heavy ion collisions
• Estimating the Production Rate of Loosely-bound Hadronic Molecules using Event Generators
• Expansion, Thermalization and Entropy Production in High-Energy Nuclear Collisions
• Prospects of antideuteron detection from dark matter annihilations or decays at AMS-02 and GAPS
• Charmonium dissociation and recombination at RHIC and LHC
• Study of the ${\psi }_2(3823)$ and ${\chi }_{c1}(3872)$ states in $B^{+}\to \left(J\psi {\pi }^{+}{\pi }^{-}\right)K^{+}$ decays
• Observation of multiplicity-dependent prompt ${\chi }_{c1}(3872)$ and $\psi (2S)$ production in $pp$ collisions
• (Anti-)Deuteron production in pp collisions at $\sqrt{s}=13$ TeV
• Multiplicity dependence of (anti-)deuteron production in pp collisions at $\sqrt{s}$ = 7 TeV
• Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Note on X(3872) production at hadron colliders and its molecular structure
• Production of $X(3872)$ at High Multiplicity
• The string-junction picture of multiquark states: an update
• Antideuteron Limits on Decaying Dark Matter with a Tuned Formation Model
• X(3872) Transport in Heavy-Ion Collisions
• More loosely bound hadron molecules at CDF?
• Investigation into the event-activity dependence of ${\rm Y}$(nS) relative production in proton-proton collisions at $\sqrt{s}=$ 7 TeV
• Charged multiplicities in pp and AA collisions at LHC
• Comment on `Note on X(3872) production at hadron colliders and its molecular structure'
• Anisotropic $J/\Psi$ suppression in nuclear collisions
• On the production of hidden-flavored hadronic states at high energy

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• Can Transverse Mass Scaling Shed Light on the Event-Activity Dependence of ${\rm Y}$ Mesons Production at LHC?
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