# Latest results on b-hadron spectroscopy at LHCb

- Institution: CERN
- Department: LHC Seminar
- Speaker: Marco Pappagallo
- Year: 2015
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3012846)
- 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)

Hadrons are systems bound by the strong interaction, which is described at the fundamental level by Quantum Chromodynamics (QCD). While QCD is well understood at high energy in the perturbative regime, low-energy phenomena such as the binding of quarks and gluons within hadrons are more difficult to predict. High precision measurements are most useful to test the reliability of several models and techniques, such as constituent-quark models or lattice-QCD calculations, into predicting the mass spectrum and the properties of the hadrons.

Using 3.0/fb of integrated luminosity recorded by the LHCb experiment, we report precise measurements of the B1(5721){0,+} and B2*(5747){0,+} states and the observation of B{+,0} pi{-,+} mass structures. The observations of two new Xib baryons are presented as well. .

0:00:00 Slide 1

0:01:18 Slide 2

0:01:40 Slide 3

0:02:33 Slide 4

0:02:53 Slide 5

0:03:19 Slide 6

0:04:37 Slide 7

0:07:04 Slide 8

0:08:34 Slide 9

0:10:01 Slide 10

0:10:50 Slide 11

0:12:03 Slide 12

0:13:35 Slide 13

0:14:13 Slide 14

0:14:44 Slide 15

0:16:10 Slide 16

0:17:00 Slide 17

0:17:51 Slide 18

0:19:12 Slide 19

0:20:48 Slide 20

0:21:48 Slide 21

0:22:13 Slide 22

0:22:38 Slide 23

0:24:18 Slide 24

0:25:29 Slide 25

0:25:59 Slide 26

0:27:32 Slide 27

0:29:09 Slide 28

0:29:58 Slide 29

0:30:14 Slide 30

0:31:41 Slide 31

0:32:34 Slide 32

0:33:33 Slide 33

0:34:49 Slide 34

0:34:57 Slide 35

0:35:26 Slide 36

0:36:14 Slide 37

0:37:17 Slide 38

0:38:01 Slide 39

0:39:23 Slide 40

0:40:11 Slide 41

0:40:43 Slide 42

0:42:08 Slide 43

0:42:57 Slide 44

0:43:21 Slide 45

0:48:17 Slide 46

0:48:21 Slide 47

0:48:52 Slide 48

## Lectures

1. [Latest results on b-hadron spectroscopy at LHCb](https://invisiblenetwork.ai/learn/cern/3012846/a68aca0dce32), 50 min (CERN's player)