%0 Journal Article
%T Deriving the existence of B(B)over-bar* bound states from the X(3872) and heavy quark symmetry
%A Nieves, J.
%A Valderrama, M. P.
%J Physical Review D
%D 2011
%V 84
%N 5
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Nieves+Valderrama2011
%O WOS:000295267700006
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=778), last updated on Mon, 24 Oct 2011 14:16:49 +0000
%X We discuss the possibility and the description of bound states between B and (B) over bar* mesons. We argue that the existence of such a bound state can be deduced from (i) the weakly bound X(3872) state, (ii) certain assumptions about the short-range dynamics of the D (D) over bar* system and (iii) heavy quark symmetry. From these assumptions the binding energy of the possible B (B) over bar* bound states is determined, first in a theory containing only contact interactions which serves as a straightforward illustration of the method, and then the effects of including the one-pion exchange potential are discussed. In this latter case three isoscalar states are predicted: a positive and negative C-parity (3)S(1) – (3)D(1) state with a binding energy of 20 MeV and 6 MeV below threshold, respectively, and a positive C-parity (3)P(0) shallow state located almost at the B (B) over bar* threshold. However, large uncertainties are generated as a consequence of the 1/m(Q) corrections from heavy quark symmetry. Finally, the newly discovered isovector Z(b)(10610) state can be easily accommodated within the present framework by a minor modification of the short-range dynamics.
%R 10.1103/PhysRevD.84.056015
%U http://arxiv.org/abs/1106.0600
%U https://doi.org/10.1103/PhysRevD.84.056015
%P 056015-21pp