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This content will become publicly available on May 22, 2016

Title: Predictions for the $$\bar{B}^{0}\rightarrow \bar{K}^{\ast 0}$$ X(YZ) and $$\bar{B}^{0}_{s}\rightarrow\phi$$ X(YZ) with X(4160), Y(3940), Z(3930)

We investigate the decay of $$\bar B^0 \to \bar K^{*0} R$$ and $$\bar B^0_s \to \phi R$$ with $R$ being the $X(4160)$, $Y(3940)$, $Z(3930)$ resonances. Under the assumption that these states are dynamically generated from the vector-vector interaction, as has been concluded from several theoretical studies, we use a reaction mechanism of quark production at the elementary level, followed by hadronization of one final $$q \bar q$$ pair into two vectors and posterior final state interaction of this pair of vector mesons to produce the resonances. With this procedure we are able to predict five ratios for these decays, which are closely linked to the dynamical nature of these states, and also predict the order of magnitude of the branching ratios which we find of the order of $$10^{-4}$$, well within the present measurable range. In order to further test the dynamical nature of these resonances we study the $$\bar B^0_s \to \phi D^* \bar D^*$$ and $$\bar B^0_s \to \phi D_s^* \bar D_s^*$$ decays close to the $$D^* \bar D^*$$ and $$D_s^* \bar D_s^*$$ thresholds and make predictions for the ratio of the mass distributions in these decays and the $$\bar B^0_s \to \phi R$$ decay widths. In conclusion, the measurement of these decays rates can help unravel the nature of these resonances.
 [1] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Guangxi Normal Univ., Guilin (China); Chinese Academy of Sciences, Lanzhou (China)
  2. The George Washington Univ., Washington, D.C. (United States)
  3. Chinese Academy of Sciences, Lanzhou (China); Institute of Modern Physics of CAS and Lanzhou Univ., Lanzhou (China); Chinese Academy of Sciences, Beijing (China)
  4. Chinese Academy of Sciences, Lanzhou (China); Centro Mixto Univ. de Valencia-CSIC Institutos de Investigacion de Paterna, Valencia (Spain)
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-15-2270; DOE/OR/23177-3900; arXiv:1502.02932
Journal ID: ISSN 1434-6001; PII: 239; NSF PIF grant no. PHY 1415459
Grant/Contract Number:
Accepted Manuscript
Journal Name:
European Physical Journal. A
Additional Journal Information:
Journal Volume: 51; Journal Issue: 5; Journal ID: ISSN 1434-6001
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States