Guo, FK , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属:
Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; SW Normal Univ, Chongqing 400715, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
英文摘要:
The psi' -> J/psi pi(+)pi(-) decay process provides a new way to extract the pi pi S wave phase shifts up to 0.59GeV. In this paper we derive the formulae for extracting the pi pi S wave phase shifts from the invariant mass spectrum of pi pi in the psi' -> J/psi pi(+)pi(-) decay.
