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Title: Determination of the compositeness of resonances from decays: The case of the Bs0J/ψf1(1285)

We develop a method to measure the amount of compositeness of a resonance, mostly made as a bound state of two hadrons, by simultaneously measuring the rate of production of the resonance and the mass distribution of the two hadrons close to threshold. By using different methods of analysis we conclude that the method allows one to extract the value of 1-Z with about $0.1$ of uncertainty. The method is applied to the case of the $$\bar B^0_s \to J/\psi f_1(1285)$$ decay, by looking at the resonance production and the mass distribution of $$K \bar K^*$$.
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Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-16-2319; DOE/OR/23177-3905; arXiv:1604.02574
Journal ID: ISSN 2470-0010; PRVDAQ
DOE Contract Number:
FIS2014-51948-C2-2-P; SEV-2014-0398; PROMETEOII/2014/0068; 1452055; 1415459
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 93; Journal Issue: 11; Related Information: Jefferson Lab Publications:
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States