Heavy ions: Results from the Large Hadron Collider

Pramana

Tapan K Nayak1¹ 

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

关键词: Quark gluon plasma;    fluctuations;    flow;    heavy flavour;    quarkonia;    jets;    energy loss.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

On November 8, 2010 the Large Hadron Collider (LHC) at CERN collided the first stable beams of heavy ions (Pb on Pb) at the centre-of-mass energy of 2.76 TeV/nucleon. The LHC worked exceedingly well during its one month of operation with heavy ions, delivering about 10 𝜇𝑏−1 of data, with peak luminosity reaching to $L_{O} = 2 × 10^{25}$ cm-2 s-1 towards the end of the run. Three experiments, ALICE, ATLAS and CMS, recorded their first heavy-ion data, which were analysed in a record time. The results of the multiplicity, flow, fluctuations and Bose–Einstein correlations indicate that the fireball formed in nuclear collisions at the LHC is hotter, lives longer, and expands to a larger size at freeze-out as compared to lower energies. We give an overview of these as well as new results on quarkonia and heavy flavour suppression, and jet energy loss.

【 授权许可】

Unknown