Proposal for exotic-hadron search by fragmentation functions

Details Proposal for exotic-hadron search by fragmentation functions Proposal for exotic-hadron search by fragmentation functions

2007-08-14

arxiv.org/abs/0708.1816v2

Phys.Rev.D77:017504,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures, revtex, To be published in PRD

Scientific paper

10.1103/PhysRevD.77.017504

It is proposed that fragmentation functions should be used to identify exotic hadrons. As an example, fragmentation functions of the scalar meson f_0(980) are investigated. It is pointed out that the second moments and functional forms of the u- and s-quark fragmentation functions can distinguish the tetraquark structure from $q\bar q$. By the global analysis of f_0 (980) production data in electron-positron annihilation, its fragmentation functions and their uncertainties are determined. It is found that the current available data are not sufficient to determine its internal structure, while precise data in future should be able to identify exotic quark configurations.

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