Pion-assisted Nucleon-Delta and Delta-Delta dibaryons

Wednesday 26 Feb 2014, 13:30 → 15:00 Asia/Tokyo

Main Research Bldg. 4F Rom 433 (RIKEN Wako)

------------------ Hadron Seminar ------------------ Feb.26 (Wed.) 2014 room: 433 (4th floor) main building date/time: Feb.26 (Wed), 2014 / 13:30-15:00 Pion-assisted Nucleon-Delta and Delta-Delta dibaryons Prof. Avraham Gal Racah Institute of Physics, The Hebrew University, Jerusalem, Israel abstract: 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.