File:PhysRevLett.122.172302.pdf
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DescriptionPhysRevLett.122.172302.pdf |
English: Using the dilute-dense factorization in the color glass condensate framework, we investigate the azimuthal angular correlation between a heavy quarkonium and a charged light hadron in proton-nucleus collisions. We extract the second harmonic v2, commonly known as the elliptic flow, with the light hadron as the reference. This particular azimuthal angular correlation between a heavy meson and a light hadron was first measured at the LHC recently. The experimental results indicate that the elliptic flows for heavy flavor mesons (J/ψ and D0) are almost as large as those for light hadrons. Our calculation demonstrates that this result can be naturally interpreted as an initial state effect due to the interaction between the incoming partons from the proton and the dense gluons inside the target nucleus. Since the heavy quarkonium v2 exhibits a weak mass dependence according to our calculation, we predict that the heavy quarkonium Υ should have a similar elliptic flow as compared to that of the J/ψ, which can be tested in future measurements. |
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.172302 https://doi.org/10.1103/PhysRevLett.122.172302 |
Author | Cheng Zhang, Cyrille Marquet, Guang-You Qin, Shu-Yi Wei, and Bo-Wen Xiao |
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Short title | Elliptic Flow of Heavy Quarkonia in pA Collisions |
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Image title | doi:10.1103/PhysRevLett.122.172302 url:https://doi.org/10.1103/PhysRevLett.122.172302 |
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Software used | Published by the American Physical Society |
Conversion program | Acrobat Distiller 10.1.16 (Windows) |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |
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