Shi, J (reprint author), Chinese Acad Sci, Ctr Sci Facil, Inst High Energy Phys & Theoret Phys, Beijing 100049, Peoples R China.
With an effective Lagrangian approach, we analyze the K- p -> pi(0)Sigma(0) reaction to study the Lambda hyperon resonances by fitting the Crystal Ball data on differential cross sections and Sigma(0) polarization with the center-of-mass energies of 1536-1676 MeV. Besides well-established Particle Data Group (PDG) four-star Lambda resonances around this energy range, the Lambda(1600)1/2(+) resonance, listed as a three-star resonance in the PDG data, is found to be definitely needed. In addition, there is strong evidence for the existence of a new Lambda(3/2(+)) resonance around 1680 MeV.
National Natural Science Foundation of China [11035006, 11121092, 11261130311]
; National Natural Science Foundation of China (DFG) [CRC110]
; National Natural Science Foundation of China (NSFC)
; Chinese Academy of Sciences [KJCX2-EW-N01]
Shi, J,Zou, BS. Theoretical study of Lambda resonances from an analysis of Crystal Ball K- p -> pi(0)Sigma(0) reaction data with center-of-mass energies of 1536-1676 MeV[J]. PHYSICAL REVIEW C,2015,91(3):35202.