Article ; Online: Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at sqrt[s_{NN}]=5.02 TeV.
2019 Volume 122, Issue 7, Page(s) 72301
Abstract: Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity (|η|<0.8) are measured in p-Pb collisions at sqrt[s_{NN}]=5.02 TeV. The analysis is carried out for the 0%-20% (high) and 60%-100% (low) multiplicity ranges. ... ...
Abstract | Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity (|η|<0.8) are measured in p-Pb collisions at sqrt[s_{NN}]=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 (v_{2}) for heavy-flavor decay electrons in the transverse momentum interval 1.5<p_{T}<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 v_{2} 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.<br /> | |||||
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Language | English | |||||
Publishing date | 2019-03-08 | |||||
Publishing country | United States | |||||
Document type | Journal Article | |||||
ZDB-ID | 208853-8 | |||||
ISSN | 1079-7114 ; 0031-9007 | |||||
ISSN (online) | 1079-7114 | |||||
ISSN | 0031-9007 | |||||
DOI | 10.1103/PhysRevLett.122.072301 | |||||
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Database | MEDical Literature Analysis and Retrieval System OnLINE |
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