Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p -Pb Collisions at sNN =5.02 TeV
(2019) In Physical Review Letters 122(7).- Abstract
- Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity (|η|<0.8) are measured in p-Pb collisions at √sNN=5.02 TeV. The analysis is carried out for the 0%–20% (high) and 60%–100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavor hadrons. A Fourier decomposition of the modulation results in a positive second-order coefficient (v2) for heavy-flavor decay electrons in the transverse momentum interval... (More)
- Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity (|η|<0.8) are measured in p-Pb collisions at √sNN=5.02 TeV. The analysis is carried out for the 0%–20% (high) and 60%–100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavor hadrons. A Fourier decomposition of the modulation results in a positive second-order coefficient (v2) for heavy-flavor decay electrons in the transverse momentum interval 1.5<pT<4 GeV/c in high-multiplicity events, with a significance larger than 5σ. The results are compared with those of charged particles at midrapidity and those of inclusive muons at forward rapidity. The v2 measurement of open heavy-flavor particles at midrapidity in small collision systems could provide crucial information to help interpret the anisotropies observed in such systems. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5cfa9bc5-e874-47eb-9e62-48484ffd5047
- author
- Acharya, S ; Adolfsson, Jonatan LU ; Christiansen, Peter LU ; Ljunggren, Martin LU ; Nassirpour, Adrian LU ; Oskarsson, Anders LU ; Silvermyr, David LU ; Stenlund, Evert LU ; Vislavicius, Vytautas LU and Zou, S.
- author collaboration
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Anisotropy, Modulation, Angular correlations, Azimuthal anisotropy, Azimuthal modulation, Collision systems, Correlation distribution, Fourier decomposition, High multiplicity, Transverse momenta, Charged particles
- in
- Physical Review Letters
- volume
- 122
- issue
- 7
- article number
- 072301
- publisher
- American Physical Society
- external identifiers
-
- scopus:85062043839
- pmid:30848618
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.122.072301
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 6 March 2019
- id
- 5cfa9bc5-e874-47eb-9e62-48484ffd5047
- date added to LUP
- 2019-03-06 11:00:55
- date last changed
- 2023-04-09 05:01:55
@article{5cfa9bc5-e874-47eb-9e62-48484ffd5047, abstract = {{Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity (|η|<0.8) are measured in p-Pb collisions at √sNN=5.02 TeV. The analysis is carried out for the 0%–20% (high) and 60%–100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavor hadrons. A Fourier decomposition of the modulation results in a positive second-order coefficient (v2) for heavy-flavor decay electrons in the transverse momentum interval 1.5<pT<4 GeV/c in high-multiplicity events, with a significance larger than 5σ. The results are compared with those of charged particles at midrapidity and those of inclusive muons at forward rapidity. The v2 measurement of open heavy-flavor particles at midrapidity in small collision systems could provide crucial information to help interpret the anisotropies observed in such systems.}}, author = {{Acharya, S and Adolfsson, Jonatan and Christiansen, Peter and Ljunggren, Martin and Nassirpour, Adrian and Oskarsson, Anders and Silvermyr, David and Stenlund, Evert and Vislavicius, Vytautas and Zou, S.}}, issn = {{1079-7114}}, keywords = {{Anisotropy; Modulation; Angular correlations; Azimuthal anisotropy; Azimuthal modulation; Collision systems; Correlation distribution; Fourier decomposition; High multiplicity; Transverse momenta; Charged particles}}, language = {{eng}}, number = {{7}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p -Pb Collisions at sNN =5.02 TeV}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.122.072301}}, doi = {{10.1103/PhysRevLett.122.072301}}, volume = {{122}}, year = {{2019}}, }