# Multiple Parton Interactions in ALICE

- Institution: CERN
- Department: LHC Seminar
- Speaker: Eva Sicking
- Year: 2013
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3011134)
- 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)

ALICE has studied observables in high energy proton-proton collisions which can provide insight into the physics of multiple parton interactions. We will present an overview of these measurements comprising the charged particle multiplicity distributions, the underlying event, the transverse sphericity, and the relation between the charged particle multiplicity and the J/psi yield as well as the D-meson yield. We will present in detail the measurement of the charged particle multiplicity dependence of per-trigger pair yields in azimuthal direction induced by low-energetic di-jets produced in proton-proton collisions. Using two-particle angular correlations with low transverse momentum thresholds, jet properties are measured on a statistical basis down to the lowest possible jet energies. The analysis can give information about the contribution from multiple parton interactions to particle production. Moreover, the results allow to optimize the parametrization of the jet fragmentation in phenomenological models, in particular at low momenta in the non-perturbative regime.The ALICE results are discussed in the framework of multiple parton interactions and they are compared to MC generators..

0:00:00 Slide 1

0:01:36 Slide 2

0:03:15 Slide 3

0:03:28 Slide 4

0:03:42 Slide 5

0:03:48 Slide 6

0:03:52 Slide 7

0:03:58 Slide 8

0:04:04 Slide 9

0:04:12 Slide 10

0:04:26 Slide 11

0:04:35 Slide 12

0:04:43 Slide 13

0:05:57 Slide 14

0:06:59 Slide 15

0:07:53 Slide 16

0:09:20 Slide 17

0:09:28 Slide 18

0:11:06 Slide 19

0:12:04 Slide 20

0:13:49 Slide 21

0:14:15 Slide 22

0:15:27 Slide 23

0:16:14 Slide 24

0:16:26 Slide 25

0:16:56 Slide 26

0:17:49 Slide 27

0:18:05 Slide 28

0:19:26 Slide 29

0:20:52 Slide 30

0:21:54 Slide 31

0:22:16 Slide 32

0:23:01 Slide 33

0:23:31 Slide 34

0:23:49 Slide 35

0:24:10 Slide 36

0:25:22 Slide 37

0:26:03 Slide 38

0:26:36 Slide 39

0:27:19 Slide 40

0:27:37 Slide 41

0:27:47 Slide 42

0:28:52 Slide 43

0:29:25 Slide 44…

## Lectures

1. [Multiple Parton Interactions in ALICE](https://invisiblenetwork.ai/learn/cern/3011134/0327cd9a5a07), 56 min (CERN's player)