About
The CMS Collaboration
Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center of mass energies of 0.9, 2.36 and 7TeV over a broad range of pseudorapidity (η) and azimuthal angle (φ) are presented using data collected with the CMS detector at the LHC. Short-range correlations in ∆η, which are studied in minimum bias events, are characterized using a simple independent cluster parameterization in order to quantify their strength (cluster size) and their extent in η (cluster decay width). Long-range azimuthal correlations are studied more differentially as a function of charged particle multiplicity and particle transverse momentum using a 980nb−1 data set at 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particles in intermediate pT's of 1-3GeV/c, 2.0< |∆η|<4.8 and ∆φ≈0. This is the first observation of such a ridge-like feature in two-particle correlation functions in pp or p-pbar collisions.
EVO Universe, password "seminar"; Phone Bridge ID: 2330444 Password: 5142.
0:00:00 Slide 1
0:04:18 Slide 2
0:08:36 Slide 3
0:17:12 Slide 4
0:25:48 Slide 5
0:34:24 Slide 6
0:43:00 Slide 7
0:51:36 Slide 8
1:00:12 Slide 9
The talk
Credits and licence
- Institution
- CERN
- Department
- CERN Joint EP/PP & LPCC/EP/PP Seminar
- Taught by
- Guido Tonelli, Gunther Roland
- Year
- 2010
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed