Counting valence quarks at RHIC and LHC

Abstract

We consider the Nuclear Modification Ratios in heavy ion collisions, R_CP and R_AA, in the region of intermediate transverse momentum, and study the dependency upon the constituent quark composition of the observed hadron. Adopting a two component recombination/fragmentation model, validated by experimental information from STAR and PHENIX, we show that a clear distinction is predicted for the f0(980) between the assumptions of $s\bar{s}$ or diquark-antidiquark content.

14 pages, 11 eps figures, added figures and minor corrections, to appear in Phys. Lett. B

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• X(3872) as a hybrid state of the charmonium and the hadronic molecule
• Charmed Exotics in Heavy Ion Collisions
• More loosely bound hadron molecules at CDF?
• Proposal for exotic-hadron search by fragmentation functions
• Universal behavior of baryons and mesons transverse momentum distributions in the framework of percolation of strings
• Exotic hadron production in quark combination model
• Colour connections of four quark $Q\bar{Q}{Q}^{\prime }{\bar{Q}}^{\prime }$ system and doubly heavy baryon production in $e^{+}{e}^{-}$ annihilation
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• ${\mathrm{f}}_0(980)$ production in inelastic pp collisions at $\sqrt{s}=5.02$ TeV
• Update on Counting Valence Quarks at RHIC
• The double life of the X meson