@Article{Albaladejo_etal2016,
author="Albaladejo, M.
and Nieves, J.
and Oset, E.
and Sun, Z. F.
and Liu, X.",
title="Can X(5568) be described as a B-s pi, B(K)over-bar resonant state?",
journal="Physics Letters B",
year="2016",
publisher="Elsevier Science Bv",
volume="757",
pages="515--519",
abstract="The DO Collaboration has recently seen a resonant-like peak in the B-s pi invariant mass spectrum, claimed to be a new state called X(5568). Using a B-s pi-B (K) over bar coupled channel analysis, implementing unitarity, and with the interaction derived from Heavy Meson Chiral Perturbation Theory, we are able to reproduce the reported spectrum, with a pole that can be associated to the claimed X(5568) state, and with mass and width in agreement with the ones reported in the experimental analysis. However, if the T-matrix regularization is performed by means of a momentum cutoff, the value for the latter needed to reproduce the spectrum is Lambda = 2.80 +/- 0.04 GeV, which is much larger than a {\textquoteleft}{\textquoteleft}natural{\textquoteright}{\textquoteright} value Lambda similar or equal to 1 GeV. In view of this, it is difficult to interpret the nature of this new state. This state would not qualify as a resonance dynamically generated by the unitarity loops. Assuming the observed peak to correspond to a physical state, we make predictions for partners in the D, D*, and B* sectors. Their observation (or lack thereof) would shed light into this issue.",
optnote="WOS:000376800300072",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2698), last updated on Mon, 06 Nov 2017 15:53:38 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2016.04.033",
opturl="http://arxiv.org/abs/1603.09230",
opturl="https://doi.org/10.1016/j.physletb.2016.04.033",
archivePrefix="arXiv",
eprint="1603.09230",
language="English"
}