期刊论文、会议论文

Liu, Fu-Ming

英文

Nuclear Physics B - Proceedings Supplements

0920-5632

2008

175

58-61

14th International Symposium on Very High Energy Cosmic Ray Interactions

AUG 15-22, 2006

Weihai, PEOPLES R CHINA

[Liu, Fu-Ming] Cent China Normal Univ, Inst Particle Phys, Wuhan, Peoples R China.^[Werner, Klaus] Univ Nantes, CNRS, Lab SUBATECH, Ecole Mines,IN2P3, Nantes, France.

Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm

PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

ELSEVIER SCIENCE BV

10.1016/j.nuclphysbps.2007.10.009

本校为第一且通讯机构

The existence of pentaquarks became questionable, because the Θ+ peak is observed in some p+p collisions, but not in e+e− annihilations. People think initial baryon number is necessary to produce pentaquarks. In this paper, we estimate and compare the production of Θ+(1540) and Ξ−−(1860) in e+e− and pp collisions at different energies using Fermi statistical model as originally proposed in its microcanonical form. We find that both Θ+(1540) and Ξ−−(1860) yield more in e+e− at LEP energies than in pp collisions at SPS and RHIC energi...