Aaij, R <br/><br/>
χ_ and χ_ Resonance Parameters with the Decays χ_→J/ψμ^μ^.  [electronic resource] 

 -  Physical review letters  Dec 2017 
 - 221801 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1079-7114 
<br/><br/><label>Standard No.: </label>10.1103/PhysRevLett.119.221801  doi