Abstract
Production of hadron exotics in high energy processes may play a role in unravelling their nature. In high energy limit, the leading power behavior of the cross section of exclusive processes is usually encoded in the constituent counting rule. In this talk I will demonstrate for the process involving hadrons with hidden flavors the constituent counting rule requests modifications. I will use effective field theory to derive the power scalings. After the e + e − → VP example I will discuss the production of hadron exotics including the X (3872) and Z± c in high energy process. I will also briefly talk about the challenge of the molecular interpretation of X (3872) based on its large production rates in hadron collisions.
Highlights
Thanks to worldwide experiments during the last decades at e+e− and hadron colliders, our interest in hadron spectroscopy has been revived by the discovery of a plethora of new hadrons
√ At high energy with s ΛQCD where s is the center-of-mass energy squared and ΛQCD is the confinement scale, exclusive processes can be understood in QCD perturbation theory
By taking a momentum cutoff set by the binding energy, the authors have found the simulated cross section is smaller than data
Summary
Thanks to worldwide experiments during the last decades at e+e− and hadron colliders, our interest in hadron spectroscopy has been revived by the discovery of a plethora of new hadrons. Most of them were discovered in the charmonium and bottomonium sector and many defy a standard quarkonium interpretation. A recent review can be found in Ref. A recent review can be found in Ref. [1]
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