"Pion-assisted Nucleon-Delta and Delta-Delta dibaryons"

The Hebrew University of Jerusalem , Nuclear Physics Seminar

"Pion-assisted Nucleon-Delta and Delta-Delta dibaryons"

Prof. Avraham Gal

Racah Institute of Physics, Hebrew University of Jerusalem

Tuesday, 01 Apr, 2014 - 14:00 - 15:15

Racah Institute of Physics Moadon room at Pavilion 9

Three-body hadronic models are formulated and solved to calculate resonance masses and widths of L=0 Nucleon-Delta and Delta-Delta dibaryons using relativistic kinematics. For Nucleon-Delta, I(JP)=1(2+) and 2(1+) resonances slightly below threshold are found by solving pi-N-N Faddeev equations. For Delta-Delta, several resonances below threshold are found by solving pi-N-Delta Faddeev equations in which the N-Delta interaction is dominated by the 1(2+) and 2(1+) resonating channels. The lowest Delta-Delta dibaryon resonances found are for I(JP)=0(3+) and 3(0+), the former agreeing well both in mass as well as in width with the relatively narrow D_{03}(2370) resonance observed recently by the WASA-at-COSY Collaboration.