# CP violation in charm decays with the LHCb experiment

- Institution: CERN
- Department: LHC Seminar
- Speaker: Angelo Carbone
- Year: 2019
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3007863)
- 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)

The existence of CP violation in the decays of strange and beauty mesons is well established experimentally by numerous measurements. By contrast, CP violation in the decays of charmed particles has escaped observation. During the first two runs of the LHC, the LHCb collaboration has collected a sample of charmed hadrons of unprecedented size. This sample enables some of the most sensitive searches for CP violation ever performed. In this seminar, the results of the latest search for time-integrated CP violation in $D^0 \to K^- K^+$ and $D^0 \to \pi^- \pi^+$ decays, performed using the full data set collected by LHCb so far, which corresponds to an integrated luminosity of $9 \mathrm{fb}^{-1}$, will be presented for the first time. The flavour of the decaying charm meson is determined by looking at the charge of the pion from the strong decay $D^*(2010)^{+} \to D^0 \pi^+$ for promptly produced $D^0$, or at the charge of the muon in semileptonic $\overline{B}^0, B^- \to D^0 \mu^- \bar{\nu}_\mu X$ decays for secondary production of $D^0$. In addition, a brief overview of a recent measurement of charm mixing at LHCb will be given. .

0:00:00 Slide 1

0:01:14 Slide 2

0:01:25 Slide 3

0:01:38 Slide 4

0:01:47 Slide 5

0:02:04 Slide 6

0:02:23 Slide 7

0:02:39 Slide 8

0:03:17 Slide 9

0:04:43 Slide 10

0:05:06 Slide 11

0:05:22 Slide 12

0:05:43 Slide 13

0:05:47 Slide 14

0:06:16 Slide 15

0:06:37 Slide 16

0:07:10 Slide 17

0:07:26 Slide 18

0:08:01 Slide 19

0:08:43 Slide 20

0:09:26 Slide 21

0:10:50 Slide 22

0:11:31 Slide 23

0:11:53 Slide 24

0:12:12 Slide 25

0:12:38 Slide 26

0:13:16 Slide 27

0:13:42 Slide 28

0:14:17 Slide 29

0:14:40 Slide 30

0:15:35 Slide 31

0:15:50 Slide 32

0:16:07 Slide 33

0:17:32 Slide 34

0:18:28 Slide 35

0:19:02 Slide 36

0:19:31 Slide 37

0:20:26 Slide 38

0:21:29 Slide 39

0:22:34 Slide 40

0:22:58 Slide 41

0:23:26 Slide 42

0:24:27 Slide 43

0:25:12 Slide 44

0:26:04 Slide 45

0:27:10 Slide 46

0:28:18 Slide 47

0:29:06…

## Lectures

1. [CP violation in charm decays with the LHCb experiment](https://invisiblenetwork.ai/learn/cern/3007863/08677069adb3), 49 min (CERN's player)