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.
| Original language | English (US) |
|---|---|
| Article number | 072301 |
| Journal | Physical Review Letters |
| Volume | 122 |
| Issue number | 7 |
| DOIs | |
| State | Published - Feb 22 2019 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p -Pb Collisions at sNN =5.02 TeV. / (ALICE Collaboration).
In: Physical Review Letters, Vol. 122, No. 7, 072301, 22.02.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p -Pb Collisions at sNN =5.02 TeV
AU - (ALICE Collaboration)
AU - Acharya, S.
AU - Adamová, D.
AU - Adolfsson, J.
AU - Aggarwal, M. M.
AU - Aglieri Rinella, G.
AU - Agnello, M.
AU - Agrawal, N.
AU - Ahammed, Z.
AU - Ahn, S. U.
AU - Aiola, S.
AU - Akindinov, A.
AU - Al-Turany, M.
AU - Alam, S. N.
AU - Albuquerque, D. S.D.
AU - Aleksandrov, D.
AU - Alessandro, B.
AU - Alfaro Molina, R.
AU - Ali, Y.
AU - Alici, A.
AU - Alkin, A.
AU - Alme, J.
AU - Alt, T.
AU - Altenkamper, L.
AU - Altsybeev, I.
AU - Anaam, M. N.
AU - Andrei, C.
AU - Andreou, D.
AU - Andrews, H. A.
AU - Andronic, A.
AU - Angeletti, M.
AU - Anguelov, V.
AU - Anson, C.
AU - Antičić, T.
AU - Antinori, F.
AU - Antonioli, P.
AU - Anwar, R.
AU - Apadula, N.
AU - Aphecetche, L.
AU - Appelshäuser, H.
AU - Arcelli, S.
AU - Arnaldi, R.
AU - Arnold, O. W.
AU - Arsene, I. C.
AU - Arslandok, M.
AU - Augustinus, A.
AU - Averbeck, R.
AU - Azmi, M. D.
AU - Badalà, A.
AU - Baek, Y. W.
AU - Seger, Janet E.
PY - 2019/2/22
Y1 - 2019/2/22
N2 - 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
AB - 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
UR - http://www.scopus.com/inward/record.url?scp=85062043839&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062043839&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.122.072301
DO - 10.1103/PhysRevLett.122.072301
M3 - Article
C2 - 30848618
AN - SCOPUS:85062043839
VL - 122
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 7
M1 - 072301
ER -