Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at <math altimg='si1.gif' overflow='scroll'><msqrt><msub><mrow><mi>s</mi></mrow><mrow><mi mathvariant='normal'>NN</mi></mrow></msub></msqrt><mo>=</mo><mn>2.76</mn><mtext> </mtext><mtext>TeV</mtext></math> [electronic resource]
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Abstract: | The elliptic flow, v 2 , of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4) is measured in Pb-Pb collisions at sNN=2.76 TeV with the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee-Yang zeros methods are used. The dependence of the v2 of muons from heavy-flavour hadron decays on the collision centrality, in the range 0-40%, and on transverse momentum, p T , is studied in the interval 3 < p T < 10 GeV/c. A positive v2 is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10-20% and 20-40% centrality classes) for the p T interval from 3 to about 5 GeV/c with a significance larger than 3σ, based on the combination of statistical and systematic uncertainties. The v2 magnitude tends to decrease towards more central collisions and with increasing p T . It becomes compatible with zero in the interval 6 < p T < 10 GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. |
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| Item Description: | Published through SciTech Connect. 02/01/2016. "ark:/13030/qt9j02819v" Physics Letters. Section B 753 C ISSN 0370-2693 AM. Adam, J.; Adamová, D.; Aggarwal, M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahn, S.; Aiola, S.; Akindinov, A.; Alam, S.; Aleksandrov, D.; Alessandro, B.; Alexandre, D.; Alfaro Molina, R.; Alici, A.; Alkin, A.; Almaraz, J.; Alme, J.; Alt, T.; Altinpinar, S.; Altsybeev, I.; Alves Garcia Prado, C.; Andrei, C.; Andronic, A.; et al. |
| Physical Description: | p. 41-56 : digital, PDF file. |