Does A Narrow Tetraquark $cc\bar{u}\bar{d}$ State Exist?

Details Does A Narrow Tetraquark $cc\bar{u}\bar{d}$ State Exist? Does A Narrow Tetraquark $cc\bar{u}\bar{d}$ State Exist?

2002-09-09

arxiv.org/abs/hep-ph/0209095v2

Phys.Lett. B551 (2003) 296-304

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 16 pages

Scientific paper

10.1016/S0370-2693(02)03069-1

The existence of a shallow or virtual tetraquark state, $cc\bar{u}\bar{d}$, is discussed. Using the putative masses for the doubly charmed baryons ($ccu/ccd$) from SELEX, the mass of the $cc\bar{u}\bar{d}$ state is estimated to be about $3.9 GeV$, only slightly above the $DD^*$ threshold. The experimental signatures for various $cc\bar{u}\bar{d}$ masses are also discussed.

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