TY  - JOUR
AU  - Nieves, J.
AU  - Valderrama, M. P.
PY  - 2011
DA  - 2011//
TI  - Deriving the existence of B(B)over-bar* bound states from the X(3872) and heavy quark symmetry
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 056015
EP  - 21pp
VL  - 84
IS  - 5
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1106.0600
UR  - https://doi.org/10.1103/PhysRevD.84.056015
DO  - 10.1103/PhysRevD.84.056015
LA  - English
N1  - WOS:000295267700006
ID  - Nieves+Valderrama2011
ER  -