# Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV

## Abstract

Here, we perform a global Bayesian analysis of a modern event-by-event heavy-ion collision model and LHC data at √s = 2.76 and 5.02 TeV. After calibration, the model simultaneously describes multiplicity, transverse momentum, and flow data at both beam energies. We report new constraints on the scaling of initial-state entropy deposition and QGP transport coefficients, including a quantitative estimate of the temperature-dependent shear viscosity (η/s)( *T*).

- Authors:

- Duke Univ., Durham, NC (United States). Dept. of Physics

- Publication Date:

- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 1478657

- Grant/Contract Number:
- [FG02-05ER41367]

- Resource Type:
- Accepted Manuscript

- Journal Name:
- Nuclear Physics. A

- Additional Journal Information:
- [ Journal Volume: 967; Journal Issue: C]; Journal ID: ISSN 0375-9474

- Publisher:
- Elsevier

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; heavy-ion collisions; quark-gluon plasma; Bayesian parameter estimation; uncertainty quantification

### Citation Formats

```
Bernhard, Jonah E., Moreland, J. Scott, and Bass, Steffen A. Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV. United States: N. p., 2017.
Web. doi:10.1016/j.nuclphysa.2017.05.037.
```

```
Bernhard, Jonah E., Moreland, J. Scott, & Bass, Steffen A. Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV. United States. doi:10.1016/j.nuclphysa.2017.05.037.
```

```
Bernhard, Jonah E., Moreland, J. Scott, and Bass, Steffen A. Mon .
"Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV". United States. doi:10.1016/j.nuclphysa.2017.05.037. https://www.osti.gov/servlets/purl/1478657.
```

```
@article{osti_1478657,
```

title = {Characterization of the initial state and QGP medium from a combined Bayesian analysis of LHC data at 2.76 and 5.02 TeV},

author = {Bernhard, Jonah E. and Moreland, J. Scott and Bass, Steffen A.},

abstractNote = {Here, we perform a global Bayesian analysis of a modern event-by-event heavy-ion collision model and LHC data at √s = 2.76 and 5.02 TeV. After calibration, the model simultaneously describes multiplicity, transverse momentum, and flow data at both beam energies. We report new constraints on the scaling of initial-state entropy deposition and QGP transport coefficients, including a quantitative estimate of the temperature-dependent shear viscosity (η/s)(T).},

doi = {10.1016/j.nuclphysa.2017.05.037},

journal = {Nuclear Physics. A},

number = [C],

volume = [967],

place = {United States},

year = {2017},

month = {9}

}

Free Publicly Available Full Text

Publisher's Version of Record

Other availability

Cited by: 7 works

*Citation information provided by*

Web of Science

Web of Science

#### Figures / Tables:

Fig. 1: Model observables sampled from the posterior distribution (lines) compared to experimental data (points with error bars). At the time of this writing, identified particle data were not available at $\sqrt{s}$ = 5.02 TeV.

All figures and tables
(3 total)

Save to My Library

You must Sign In or Create an Account in order to save documents to your library.

*Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.*