Quarkonium suppression: Gluonic dissociation vs. colour screening

Pramana

Dinesh Kumar Srivastava¹  Binoy Krishna Patra1¹ 

[1] Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India$$

关键词: Quark gluon plasma;    𝐽/𝜓;    suppression;    dissociation;    colour screening.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We evaluate the suppression of 𝐽/𝜓 production in an equilibrating quark gluon plasma for two competing mechanisms: Debye screening of colour interaction and dissociation due to energetic gluons. Results are obtained for S + S and Au + Au collisions at RHIC and LHC energies. At RHIC energies the gluonic dissociation of the charmonium is found to be equally important for both the systems while the screening of the interaction plays a significant role only for the larger systems. At LHC energies the Debye mechanism is found to dominate both the systems. While considering the suppression of directly produced $Upsilon$ at LHC energies, we find that only the gluonic dissociation mechanism comes into play for the initial conditions taken from the self screened parton cascade model in these studies.

【 授权许可】

Unknown