TY  - JOUR
AU  - Wang, E.
AU  - Xie, J. J.
AU  - Liang, W. H.
AU  - Guo, F. K.
AU  - Oset, E.
PY  - 2017
DA  - 2017//
TI  - Role of a triangle singularity in the gamma p -> K+Lambda (1405) reaction
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 015205
EP  - 9pp
VL  - 95
IS  - 1
PB  - Amer Physical Soc
AB  - We show the effects of a triangle singularity mechanism for the gamma p -> K+Lambda(1405) reaction. The mechanism has a N-* resonance around 2030 MeV, which decays into K*Sigma. The K-* decays to K+ pi, and the pi Sigma merge to form the Lambda (1405). This mechanism produces a peak around root s = 2110 MeV, and has its largest contribution around cos theta= 0. The addition of this mechanism to other conventional ones leads to a good reproduction of d sigma/dcos theta and the integrated cross section around this energy, providing a solution to a problem encountered in previous theoretical models.
SN  - 2469-9985
UR  - http://arxiv.org/abs/1610.07117
UR  - https://doi.org/10.1103/PhysRevC.95.015205
DO  - 10.1103/PhysRevC.95.015205
LA  - English
N1  - WOS:000392077300005
ID  - Wang_etal2017
ER  -