# Flash-4: Longitudinal structure of the initial state from 3+1D CGC simulations

- Institution: CERN
- Department: Conferences
- Speaker: Pragya Singh
- Year: 2021
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3019809)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We develop a framework to simulate the 3+1D dynamics of the initial energy deposition in heavy-ion collisions by taking into account the finite longitudinal extent of the colliding nuclei in the Color-Glass Condensate framework. Based on a simple model for the color charge distributions of the colliding nuclei, we demonstrate how the boost-invariant limit is recovered at high energies along with certain contrasting results that signify deviation from the high energy limit. We then develop a physical model of the three-dimensional color charge distributions in terms of small-x TMDs and study the non-trivial rapidity profile and the longitudinal fluctuations that emerge naturally within our framework..

0:00:00 Slide 1

0:00:29 Slide 2

0:00:58 Slide 3

0:01:26 Slide 4

0:01:55 Slide 5

0:02:23 Slide 6

0:02:52 Slide 7

0:03:20 Slide 8

0:03:49 Slide 9

0:04:17 Slide 10

0:04:46 Slide 11

## Lectures

1. [Flash-4: Longitudinal structure of the initial state from 3+1D CGC simulations](https://invisiblenetwork.ai/learn/cern/3019809/5ec36d790935), 5 min (CERN's player)