^{1}

^{1}

^{3}.

It has long been debated whether the hydrodynamics is suitable for the smaller colliding systems such as

In the past decade, the experimental results of heavy ion collisions at both RHIC and LHC energies have been extensively studied. These studies have shown that the strongly coupled quark-gluon plasma (sQGP) might be created in these collisions [

In this paper, by supposing the existence of collective flow in

The nonextensive statistics,

The article is organized as follows. In Section

The main content of the relativistic hydrodynamic model [

The expansion of fluid obeys the continuity equation

The projection of Equation (

With the expansion of created matter, its temperature becomes lower and lower. When the temperature drops from the initial temperature

The solutions of Equation (

The nonextensive statistics is based on the following two postulations [

(a) The entropy of a statistical system possesses the form of

(b) The mean value of an observable

From the above two postulations, the average occupational number of quantum in the state with temperature

With the expansion of hadronic matter, its temperature becomes even lower. As the temperature drops to the so-called kinetic freeze-out temperature

By using Equations (

The transverse momentum distributions of strange particles

The transverse momentum distributions of

The transverse momentum distributions of

The transverse momentum distributions of the identified charged particles (

Figure

The values of

Parameters | | | | | |

| |||||

| 1.083 | 1.083 | 1.062 | 1.075 | 1.068 |

1.083 | 1.062 | 1.075 | |||

| 0.084 | 0.087 | 0.379 | 0.026 | 0.016 |

0.086 | 0.337 | 0.026 | |||

| 0.68 | 0.32/0.39 | 0.47/0.90 | 0.47/0.64 | 0.02 |

Figure

The values of

Parameters | | | |

| |||

| 1.075 | 1.080 | 1.060 |

1.075 | 1.080 | 1.060 | |

| 10.439 | 3.699 | 13.099 |

10.342 | 3.602 | 10.479 | |

| 5.25/3.28 | 1.57/1.01 | 0.47/0.17 |

Figure

The values of

| Parameters | | | |

| ||||

0.9 TeV | | 1.064 | 1.090 | 1.071 |

1.064 | 1.090 | 1.071 | ||

| 0.161 | 0.045 | 0.152 | |

0.159 | 0.044 | 0.145 | ||

| 8.50/10.85 | 0.37/0.47 | 1.10/1.84 | |

| ||||

2.76 TeV | | 1.078 | 1.100 | 1.088 |

1.078 | 1.100 | 1.088 | ||

| 0.051 | 0.015 | 0.037 | |

0.050 | 0.014 | 0.036 | ||

| 8.90/8.25 | 0.30/0.62 | 1.75/1.35 | |

| ||||

7 TeV | | 1.084 | 1.120 | 1.105 |

1.084 | 1.120 | 1.105 | ||

| 0.004 | 0.001 | 0.002 | |

0.004 | 0.001 | 0.002 | ||

| 7.28/7.69 | 0.23/0.35 | 1.13/1.43 |

In calculations, the sound speed in hadronic state takes the value of

The parameters

By assuming the existence of longitudinal collective motion and long-range interactions in sQGP produced in

The theoretical model used in this paper contains rich information about the transport coefficients of fluid, such as the sound speed

(a) The theoretical model can give a good description of the currently available experimental data collected in

(b) The fitted values of

The experimental data used to support the findings of this study have been deposited in

The authors declare that there are no conflicts of interest regarding the publication of this paper.

This work is supported by the Shanghai Key Lab of Modern Optical System.