Göran Jarlskog
Professor emeritus
Measurement of Azimuthal Anisotropy of Muons from Charm and Bottom Hadrons in pp Collisions at s =13 TeV with the ATLAS Detector
Author
Summary, in English
The elliptic flow of muons from the decay of charm and bottom hadrons is measured in pp collisions at √s=13 TeV using a data sample with an integrated luminosity of 150 pb-1 recorded by the ATLAS detector at the LHC. The muons from heavy-flavor decay are separated from light-hadron decay muons using momentum imbalance between the tracking and muon spectrometers. The heavy-flavor decay muons are further separated into those from charm decay and those from bottom decay using the distance-of-closest-approach to the collision vertex. The measurement is performed for muons in the transverse momentum range 4-7 GeV and pseudorapidity range |η| < 2.4. A significant nonzero elliptic anisotropy coefficient v2 is observed for muons from charm decays, while the v2 value for muons from bottom decays is consistent with zero within uncertainties.
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2020-02-26
Language
English
Publication/Series
Physical Review Letters
Volume
124
Issue
8
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Keywords
- Anisotropy
- Decay (organic)
- Germanium compounds
- Hadrons
- Tellurium compounds
- Anisotropy coefficients
- ATLAS detectors
- Azimuthal anisotropy
- Elliptic flows
- Integrated luminosity
- Muon spectrometer
- Pseudorapidities
- Transverse momenta
- Charged particles
Status
Published
ISBN/ISSN/Other
- ISSN: 1079-7114