Physics Letters B idUS. Depósito de Investigación de la Universidad de Sevilla instname Modern Physics Letters B Modern Physics Letters B, World Scientific Publishing, 2020, pp.135939. ⟨10.1016/j.physletb.2020.135939⟩ Physics Letters B, Vol 811, Iss, Pp 135939-(2020) Physics Letters B, Elsevier, 2020, 811, pp.135939. ⟨10.1016/j.physletb.2020.135939⟩ Physics Letters B, 2020, 811, pp.135939. ⟨10.1016/j.physletb.2020.135939⟩