Abstract
The non-relativistic wave function framework is applied to study the production and decay of exotic hadrons, which can be effectively described as bound states of other hadrons. Employing the factorized formulation, with the help of event generators, we investigate the production of exotic hadrons in multiproduction processes at high energy hadron colliders. This study provides crucial information for the measurements of the relevant exotic hadrons.
Highlights
IntroductionMore and more new exotic hadron states, e.g., the XYZ mesons, have been observed
More and more new exotic hadron states, e.g., the XYZ mesons, have been observed. They are assumed as multiquark states and/or as bound states of other ingredient hadrons in lots of theoretical investigations . [1,2,3,4] Such investigations can be done via their decay processes, where the branching ratios and distributions of the decay products can be studied, and via their production processes
Employing a recent example [24], we show the wave function at the origin can be obtained by fitting the available data, and is used to predict the production in other phase space regions, other collision energies and processes
Summary
More and more new exotic hadron states, e.g., the XYZ mesons, have been observed. We will review and list the formulations for the calculation of hadronic molecule production rate in the NR wave function framework, taking pp scattering at LHC, say pp → A + B + X → H(A, B) + X, as an example Based on these formulations, only the NR wave function (and/or its derivatives) at the origin and correspondingly, only the square of the absolute value of the production amplitude (and/or its derivatives) of ingredient hadron A and B, are relevant. For very complex processes such as the production of hadrons in high energy pp(p) collision, the effective Lagrangian can not be constructed In this case, to employ the event generators to give the distribution is the only practical way. We will show that the generator can be applicable to the P-wave case
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