A Chromomagnetic mechanism for the X(3872) resonance

Hogaasen, H.; Richard, J.M.; Sorba, P.

doi:10.1103/PhysRevD.73.054013

A Chromomagnetic mechanism for the X(3872) resonance

Nov, 2005

4 pages

Published in:

Phys.Rev.D 73 (2006) 054013

e-Print:

hep-ph/0511039 [hep-ph]

DOI:

10.1103/PhysRevD.73.054013

Report number:

LAPTH-1221-05,
LPSC-05-112

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Abstract: (arXiv)

The chromomagnetic interaction, with proper account for flavour-symmetry breaking, is shown to explain the mass and coupling properties of the X(3872) resonance as a

J^{PC}

= 1

^{++}

state consisting of a heavy quark-antiquark pair and a light one. It is crucial to introduce all the spin-colour configurations compatible with these quantum numbers and diagonalise the chromomagnetic interaction in this basis. This approach thus differs from the molecular picture

D\bar {D}*

and from the diquark-antidiquark picture.

12.40.Yx
12.39.Mk
bound state: (2quark 2antiquark)
X(3872): quantum number
spin: color
effective Hamiltonian
color: magnetic
symmetry breaking: flavor

References(39)

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