Hidden spin-3/2 field in the standard model Durmuş Demir, Canan Karahan, Beste Korutlu and Ozan Sargın Eur. Phys. J. C, 77 9 (2017) 593 Published online: 08 September 2017 DOI: 10.1140/epjc/s10052-017-5164-3