dc.creator | Dias, Jorgivan Morais | |
dc.creator | Narison, S. | |
dc.creator | Navarra, Fernando Silveira | |
dc.creator | Nielsen, Marina | |
dc.creator | Richard, J.-M. | |
dc.date.accessioned | 2014-04-22T17:59:21Z | |
dc.date.accessioned | 2018-07-04T16:44:11Z | |
dc.date.available | 2014-04-22T17:59:21Z | |
dc.date.available | 2018-07-04T16:44:11Z | |
dc.date.created | 2014-04-22T17:59:21Z | |
dc.date.issued | 2011-07-28 | |
dc.identifier | Physics Letters B, Holanda do Norte, v.703, p.274-280, 2011. | |
dc.identifier | http://www.producao.usp.br/handle/BDPI/44567 | |
dc.identifier | http://dx.doi.org/10.1063/1.4795980 | |
dc.identifier | http://www.sciencedirect.com/science/article/pii/S0370269311009014 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1639652 | |
dc.description.abstract | We have studied, using double ratio of QCD (spectral) sum rules, the ratio between the masses of Tcc and
X(3872) assuming that they are respectively described by the D−D∗ and D− ¯D∗ molecular currents. We
found (within our approximation) that the masses of these two states are almost degenerate. Since the
pion exchange interaction between these mesons is exactly the same, we conclude that if the observed
X(3872) meson is a D ¯D∗ + c.c. molecule, then the DD∗ molecule should also exist with approximately
the same mass. An extension of the analysis to the b-quark case leads to the same conclusion. We also
study the SU(3) breakings for the T s
Q Q /TQ Q mass ratios. Motivated by the recent Belle observation of
two Zb states, we revise our determination of Xb by combining results from exponential and FESR sum
rules. | |
dc.language | eng | |
dc.publisher | W. Haxton | |
dc.publisher | Holanda do Norte | |
dc.relation | Physics Letters B | |
dc.rights | Elsevier B.V. | |
dc.rights | openAccess | |
dc.subject | QCD spectral sum rules | |
dc.subject | Non-perturbative methods | |
dc.subject | Exotic multiquark states | |
dc.subject | Heavy quarkonia | |
dc.title | Relation between Tcc,bb and Xc,b from QCD. | |
dc.type | Artículos de revistas | |