Transverse Momentum and Pseudorapidity Distributions of Charged Particles and Spatial Shapes of Interacting Events in Pb-Pb Collisions at 2.76 TeV

Figure 1

(a)–(c) Transverse momentum distributions of (a) 𝜋⁺+𝜋⁻, (b) 𝐾⁺+𝐾⁻, and (c) 𝑝+𝑝 produced in Pb-Pb collisions at √𝑠_𝑁𝑁=2.76 TeV in different centrality intervals 0–5%, 5–10%, 10–20%, …, and 80–90% scaled by multiplying 2⁹, 2⁸, 2⁷, …, and 2⁰, respectively. The symbols represent the experimental data of the ALICE Collaboration [8] and the curves are results of the Tsallis statistics. (d) Dependences of parameters 𝑇 and 𝑞 on centrality intervals. Different symbols represent the parameter values extracted from the distributions of different charged particles.

(a) 2.76 TeV  Pb-Pb, |𝑦|<0.5

(b) 2.76 TeV  Pb-Pb, |𝑦|<0.5

(c) 2.76 TeV  Pb-Pb, |𝑦|<0.5

(d) 2.76 TeV  Pb-Pb, |𝑦|<0.5