Search for collectivity with azimuthal J/ψ-hadron correlations in high multiplicity p–Pb collisions at √sNN=5.02 and 8.16 TeV
dc.contributor.author | Acharya, Shreyasi | pt_BR |
dc.contributor.author | Gay Ducati, Maria Beatriz | pt_BR |
dc.contributor.author | Pereira, Luis Gustavo | pt_BR |
dc.contributor.author | Pezzi, Rafael Peretti | pt_BR |
dc.contributor.author | ALICE Collaboration | pt_BR |
dc.date.accessioned | 2018-09-18T02:30:03Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 0370-2693 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/182096 | pt_BR |
dc.description.abstract | We present a measurement of azimuthal correlations between inclusive J/ψand charged hadrons in p–Pbcollisions recorded with the ALICE detector at the CERN LHC. The J/ψare reconstructed at forward (p-going, 2.03 <y <3.53) and backward (Pb-going, −4.46 <y <−2.96) rapidity via their μ+μ−decay channel, while the charged hadrons are reconstructed at mid-rapidity (|η| <1.8). The correlations are ex-pressed in terms of associated charged-hadron yields per J/ψtrigger. Arapidity gap of at least 1.5 units is required between the trigger J/ψand the associated charged hadrons. Possible correlations due to collec-tive effects are assessed by subtracting the associated per-trigger yields in the low-multiplicity collisions from those in the high-multiplicity collisions. After the subtraction, we observe a strong indication of re-maining symmetric structures at ϕ≈0and ϕ≈π, similar to those previously found in two-particle correlations at middle and forward rapidity. The corresponding second-order Fourier coefficient (v2) in the transverse momentum interval between 3 and 6GeV/cis found to be positive with a significance of about 5σ. The obtained results are similar to the J/ψv2coefficients measured in Pb–Pb collisions at √sNN=5.02TeV, suggesting a common mechanism at the origin of the J/ψv2. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physics letters. B. Amsterdam. Vol. 780 (May 2018), p. 7-20 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisao de ions pesados | pt_BR |
dc.subject | Mésons psi | pt_BR |
dc.title | Search for collectivity with azimuthal J/ψ-hadron correlations in high multiplicity p–Pb collisions at √sNN=5.02 and 8.16 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001072277 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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