TY - JOUR AU - Samart, D. AU - Liang, W. H. AU - Oset, E. PY - 2017 DA - 2017// TI - Triangle mechanisms in the build up and decay of the N*(1875) T2 - Phys. Rev. C JO - Physical Review C SP - 035202 EP - 14pp VL - 96 IS - 3 PB - Amer Physical Soc AB - We studied the N*(1875)(3/ 2-) resonance with a multichannel unitary scheme, considering the Delta pi and Sigma * K, with their interaction extracted from chiral Lagrangians, and then added two more channels, the N*(1535) p and N sigma, which proceed via triangle diagrams involving the Sigma * K and Delta pi respectively in the intermediate states. The triangle diagram in the N*(1535) p case develops a singularity at the same energy as the resonance mass. We determined the couplings of the resonance to the different channels and the partial decay widths. We found a very large decay width to Sigma * K, and also observed that, due to interference with other terms, the N sigma channel has an important role in the pi pi mass distributions at low invariant masses, leading to an apparently large N sigma decay width. We discuss justifying the convenience of an experimental reanalysis of this resonance, in light of the findings of the paper, using multichannel unitary schemes. SN - 2469-9985 UR - http://arxiv.org/abs/1703.09872 UR - https://doi.org/10.1103/PhysRevC.96.035202 DO - 10.1103/PhysRevC.96.035202 LA - English N1 - WOS:000409256500008 ID - Samart_etal2017 ER -