Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV (2016)
- Authors:
- USP affiliated authors: BREGANT, MARCO - IF ; MUNHOZ, MARCELO GAMEIRO - IF ; SUAIDE, ALEXANDRE ALARCON DO PASSO - IF
- Unidade: IF
- DOI: 10.1016/j.physletb.2016.10.048
- Assunto: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS
- Language: Inglês
- Abstract: We present measurements of two-particle correlations with neutral pion trigger particles of transverse momenta 8 < ptrig T < 16 GeV/c and associated charged particles of 0.5 < passoc T < 10 GeV/c versus the azimuthal angle difference ϕ at midrapidity in pp and central Pb–Pb collisions at √sNN = 2.76 TeV with ALICE. The new measurements exploit associated charged hadrons down to 0.5 GeV/c, which significantly extends our previous measurement that only used charged hadrons above 3 GeV/c. After subtracting the contributions of the flow background, v2 to v5, the per-trigger yields are extracted for |ϕ| < 0.7 on the near and for |ϕ − π| < 1.1 on the away side. The ratio of per-trigger yields in Pb–Pb to those in pp collisions, IAA, is measured on the near and away side for the 0–10% most central Pb–Pb collisions. On the away side, the per-trigger yields in Pb–Pb are strongly suppressed to the level of IAA ≈ 0.6 for passoc T > 3 GeV/c, while with decreasing momenta an enhancement develops reaching about 5 at low passoc T . On the near side, an enhancement of IAA between 1.2 at the highest to 1.8 at the lowest passoc T is observed. The data are compared to parton-energy-loss predictions of the JEWEL and AMPT event generators, as well as to a perturbative QCD calculation with medium-modified fragmentation functions. All calculations qualitatively describe the away-side suppression at high passoc T . Only AMPT captures the enhancement at low passoc T , both on the near and away side. However, it also underpredicts IAA above 5 GeV/c, in particular on the near-side. ©
- Imprenta:
- Source:
- Título do periódico: PHYSICAL REVIEW B
- ISSN: 0370-2693
- Volume/Número/Paginação/Ano: v. 763, p. 238–250, dec. 2016
- Este periódico é de acesso aberto
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: gold
- Licença: cc-by
-
ABNT
ADAM, J et al. Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV. PHYSICAL REVIEW B, v. 763, p. 238–250, 2016Tradução . . Disponível em: http://www.sciencedirect.com/science/article/pii/S0370269316306190. Acesso em: 19 mar. 2024. -
APA
Adam, J., Prado, C. A. G., Bregant, M., Cosentino, M. R., Figueredo, M. A. S., Jahnke, C., et al. (2016). Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV. PHYSICAL REVIEW B, 763, 238–250. doi:10.1016/j.physletb.2016.10.048 -
NLM
Adam J, Prado CAG, Bregant M, Cosentino MR, Figueredo MAS, Jahnke C, Lagana Fernandes C, Munhoz MG, Silva ACO da, Suaide AA do P. Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV [Internet]. PHYSICAL REVIEW B. 2016 ; 763 238–250.[citado 2024 mar. 19 ] Available from: http://www.sciencedirect.com/science/article/pii/S0370269316306190 -
Vancouver
Adam J, Prado CAG, Bregant M, Cosentino MR, Figueredo MAS, Jahnke C, Lagana Fernandes C, Munhoz MG, Silva ACO da, Suaide AA do P. Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV [Internet]. PHYSICAL REVIEW B. 2016 ; 763 238–250.[citado 2024 mar. 19 ] Available from: http://www.sciencedirect.com/science/article/pii/S0370269316306190 - Investigating the role of coherence effects on jet quenching in 'PB'-'PB' collisions at 's IND. NN' POT. 1/2'= 2:76 TeV using jet substructure
- Direct photon production at low transverse momentum in proton-proton collisions at 's POT. 1/2'=2.76 and 8 TeV
- Online calibration of the TPC drift time in the ALICE high level trigger
- GPU-accelerated track reconstruction in the ALICE high level trigger
- Medium modification of the shape of small-radius jets in central 'PB'-'PB' collisions at 's IND. NN' POT. 1/2'=2.76TeV
- p-p, p-'lâmbda' and 'lâmbda'-'lâmbda' correlations studied via femtoscopy in pp reactions at 's POT. 1/2' = 7 TeV
- Two particle differential transverse momentum and number density correlations in p-'PB' and 'PB'-'PB' at the LHC
- 'úpsilon' suppression at forward rapidity in 'PB'-'PB' collisions at 's IND. NN' POT. 1/2' = 5.02 TeV
- Charged jet cross section and fragmentation in proton-proton collisions at 's POT. 1/2' = 7 TeV
- Charged kaon femtoscopic correlations in p–'PB' collisions at 's IND.NN' POT. 1/2'= 5:02 TeV with ALICE at the LHC
Informações sobre o DOI: 10.1016/j.physletb.2016.10.048 (Fonte: oaDOI API)
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