Are There J/ψ Anomalous Suppressions in 158 A GeV/c Pb+Pb Collisions?

Sa Benhao; Tai An; Wang Hui

Chinese Physics C> 1999, Vol. 23> Issue(7) : 689-692

Are There J/ψ Anomalous Suppressions in 158 A GeV/c Pb+Pb Collisions?

China Institute of Atomic Energy Beijing 1024132 Institute of High Energy Physics, The Chinese Academy of Sciences Beijing 100039

Abstract
HTML
Reference
Related

PDF

Abstract：
The mechanisms of the energy degradation of leading particle, of the effechve dissociation of CC pair (the precursor of physical J/ψ) in the colour electric field of strings, and of the hadronic absorption (both baryon and meson) are introduced into the proposed hadron and string cascade model, JPCIAE. That has been used to calculate the J/ψ suppression factors in pA, AB (with light projectile), and Pb+Pb collisions at 200 A GeV/c energy. The theorehcal results reproduce simultaneously both the cormsponding NA38 and NA50 data fairly well, which arises the queshon of whther there art J/ψ anomalous suppressions in 158 A GeV/c Pb+Pb collisions.

References

[1]

Sa Benhao, Tai An, Wang Hui. High Energy Phys. and Nucl. Phys. (in Chinese), 1999, 23:489(萨本豪,台安,王辉.高能物理与核物理,1999,23:489)2 NA3 Collab., Badier J et al. Z. Phys., 1983, C20: 101 3 NA38 Collab., Berlin C et al. 1989, B220: 471; 1990, B251: 465, 472; 1991, B255: 459; 1991, B270: 105;1995, B345: 6174 NA50 Collab., Gonin M et al. Nucl. Phys., 1996, A610: 404c 5 Geiss J, Greiner, C Bratkovskaya E L et al. nucl–th/98030086 Loh S, Greiner C, Mosel U. Phys. Lett., 1997, B404: 2387 Cassing W, Ko C M. Phys. Lett., 1997, B396:398 Cassing W, Bratkovskaya E L. Nucl. Phys., 1997, A623:5709 Mueller B. nucl–th/9806023 10 Tai An, Sa Benhao. Phys. Lett., 1997, B409:393; Phys. Rev., 1998, C57:26111 Vogt R. Phys. Lett., 1998, B430: 15

Access

Get Citation

Sa Benhao, Tai An and Wang Hui. Are There J/ψ Anomalous Suppressions in 158 A GeV/c Pb+Pb Collisions?[J]. Chinese Physics C, 1999, 23(7): 689-692.

Sa Benhao, Tai An and Wang Hui. Are There J/ψ Anomalous Suppressions in 158 A GeV/c Pb+Pb Collisions?[J]. Chinese Physics C, 1999, 23(7): 689-692. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1998-10-08
Revised: 1900-01-01

Article Metric

Article Views(3280)
PDF Downloads(534)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142