Journal
PHYSICAL REVIEW D
Volume 78, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.78.114018
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Funding
- DGICYT [FIS2006-03438]
- Austrian Science fund [M979-N16]
- EU [RII3-CT-2004-506078]
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We have studied the interaction of vector mesons within the hidden gauge formalism and applied it to the particular case of the rho rho interaction. We find a strong attraction in the isospin, spin channels I, S = 0, 0 and 0, 2, which is enough to bind the rho rho system. We also find that the attraction in the I, S = 0, 2 channel is much stronger than in the 0, 0 case. The states develop a width when the rho mass distribution is considered, and particularly when the pi pi decay channel is turned on. Using a regularization scheme with cutoffs of natural size, we obtain results in fair agreement with the mass and the width of the f(0)(1370) and f(2)(1270) meson states, providing a natural explanation of why the tensor state is more bound than the scalar and offering a new picture for these states, which would be dynamically generated from the rho rho interaction or, in simpler words, rho rho molecular states.
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