Event-plane dependent di-hadron correlations with harmonic v subtraction in a hydrodynamic model

Castilho, Wagner Maciel; Qian, Wei-Liang; Hama, Yogiro; Kodama, T.

doi:10.1016/j.physletb.2017.12.057

Cited by 11 publications

(16 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the same papers, we also calculated the trigger-angle (φ t ) dependence, which has been measured by STAR Collaboration [62] obtaining reasonable agreement (see figure 15). More quantitative studies, as well as discussions about possible mechanism of such behaviors have been achieved in [63][64][65][66][67] and will be described in detail in section 5.…”

Section: Nexspherio Results On Long-range Correlationmentioning

confidence: 99%

“…Such an explanation also naturally describes some of the features observed in data analysis, which is less intuitive otherwise. The remainder of this section is dedicated to study the trigger-angle dependence [63][64][65]67], centrality dependence [66] of di-hadron correlation in Au + Au collisions, as well as the extracted model parameters [79] in comparison with the data.…”

Section: Some Observed Properties and Relation With The Peripheral Tubesmentioning

confidence: 99%

See 1 more Smart Citation

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Hama¹,

Kodama²,

Qian³

2020

J. Phys. G: Nucl. Part. Phys.

Self Cite

View full text Add to dashboard Cite

In this paper, we give an account of the peripheral-tube model, which has been developed to give an intuitive and dynamical description of the so-called ridge effect in two-particle correlations in high-energy nuclear collisions. Starting from a realistic event-by-event fluctuating hydrodynamical model calculation, we first show the emergence of ridge + shoulders in the so-called two-particle long-range correlations, reproducing the data. In contrast to the commonly used geometric picture of the origin of the anisotropic flow, we can explain such a structure dynamically in terms of the presence of high energy-density peripheral tubes in the initial conditions. These tubes violently explode and deflect the near radial flow coming from the interior of the hot matter, which in turn produces a two-ridge structure in single-particle distribution, with approximately two units opening in azimuth. When computing the two-particle correlation, this will result in characteristic three-ridge structure, with a high near-side ridge and two symmetric lower away-side ridges or shoulders. Several anisotropic flows, necessary to producing ridge + shoulder structure, appear naturally in this dynamical description. Using this simple idea, we can understand several related phenomena, such as centrality dependence and trigger-angle dependence.

show abstract

Section: Nexspherio Results On Long-range Correlationmentioning

confidence: 99%

Section: Some Observed Properties and Relation With The Peripheral Tubesmentioning

confidence: 99%

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Hama¹,

Kodama²,

Qian³

2020

J. Phys. G: Nucl. Part. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…15). More quantitative studies, as well as discussions about possible mechanism of such behaviors have been achieved in [63][64][65][66][67] and will be described in detail in Section V.…”

Section: A Nexspherio Results On Long-range Correlationmentioning

confidence: 99%

“…Such an explanation also naturally describes some of the features observed in data analysis, which is less intuitive otherwise. The remainder of this section is dedicated to study the triggerangle dependence [63][64][65]67], centrality dependence [66] of di-hadron correlation in Au+Au collisions, as well as the extracted model paremeters [79] in comparison with the data.…”

Section: Some Observed Properties and Relation With The Peripheral Tubesmentioning

confidence: 99%

“…Recently, in accordance with the experimental data [85], we also carried out calculations which implement the same flow background due to the elliptic, triangular, and quadrangular flows in accordance with the STAR collaboration. The calculated correlations [67] are then compared with the data. The simulations are carried out for the 20 -60% centrality window.…”

Section: A Trigger-angle Dependencementioning

confidence: 99%

See 1 more Smart Citation

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Hama,

Kodama,

Qian

2020

Preprint

Self Cite

View full text Add to dashboard Cite

In this paper, we give an account of the peripheral-tube model, which has been developed to give an intuitive and dynamical description of the so-called ridge effect in two-particle correlations in high-energy nuclear collisions. Starting from a realistic event-by-event fluctuating hydrodynamical model calculation, we first show the emergence of ridge + shoulders in the so-called two-particle long-range correlations, reproducing the data. In contrast to the commonly used geometric picture of the origin of the anisotropic flow, we can explain such a structure dynamically in terms of the presence of high energy-density peripheral tubes in the initial conditions. These tubes violently explode and deflect the near radial flow coming from the interior of the hot matter, which in turn produces a two-ridge structure in single-particle distribution, with approximately two units opening in azimuth. When computing the two-particle correlation, this will result in characteristic threeridge structure, with a high near-side ridge and two symmetric lower away-side ridges or shoulders. Several anisotropic flows, necessary to producing ridge + shoulder structure, appear naturally in this dynamical description. Using this simple idea, we can understand several related phenomena, such as centrality dependence and trigger-angle dependence.

show abstract

Centrality and transverse momentum dependence of dihadron correlations in a hydrodynamic model

Castilho

Qian

2018

Nuclear Physics A

Self Cite

View full text Add to dashboard Cite

In this work, we study the centrality as well as transverse momentum dependence of the dihadron correlation for Au+Au collisions at 200A GeV. The numerical simulations are carried out by using a hydrodynamical code NeXSPheRIO, where the initial conditions are obtained from a Regge-Gribov based microscopic model, NeXuS. In our calculations, the centrality windows are evaluated regarding multiplicity. The final correlations are obtained by the background subtraction via ZYAM methods, where higher harmonics are also considered explicitly. The correlations are evaluated for the 0 -20%, 20%-40% and 60%-92% centrality windows. Also, the transverse momentum dependence of the dihadron correlations is investigated. The obtained results are compared with experimental data. It is observed that the centrality dependence of the "ridge" and "double shoulder" structures is in consistency with the data. Based on specific set of parameters employed in the present study, it is found that different ZYAM subtraction schemes might lead to different features in the resultant correlations.

show abstract

Event-plane dependent di-hadron correlations with harmonic v subtraction in a hydrodynamic model

Cited by 11 publications

References 70 publications

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Two-particle correlations at high-energy nuclear collisions, peripheral-tube model revisited

Centrality and transverse momentum dependence of dihadron correlations in a hydrodynamic model

Contact Info

Product

Resources

About