Abstract
Soft-hadron measurements in high-energy collisions of small systems like p-Pb and d-Au show peculiar qualitative features (long-range rapidity correlations, flattening of the p T -spectra with increasing hadron mass and centrality, non-vanishing Fourier harmonics in the azimuthal particle distributions) suggestive of the formation of a strongly-interacting medium displaying a collective behaviour, with a hydrodynamic flow as a response to the pressure gradients in the initial conditions. Hard observables (high-p T jet and hadron spectra) on the other hand, within the current large systematic uncertainties, appear only midly modified with the respect to the benchmark case of minimum-bias p-p collisions. What should one expect for heavy-flavour particles, initially produced in hard processes but tending, in the nucleus-nucleus case, to approach kinetic equilibrium with the rest of the medium? This is the issue we address in the present study, showing how the current experimental findings are compatible with a picture in which the formation of a hot medium even in proton-nucleus collisions modifies the propagation and hadronization of heavy-flavour particles.
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References
ALICE collaboration, Long-range angular correlations on the near and away side in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 719 (2013) 29 [arXiv:1212.2001] [INSPIRE].
ATLAS collaboration, Observation of associated near-side and away-side long-range correlations in \( \sqrt{s_{N\ N}} = 5.02 \) TeV proton-lead collisions with the ATLAS detector, Phys. Rev. Lett. 110 (2013) 182302 [arXiv:1212.5198] [INSPIRE].
CMS collaboration, Observation of long-range near-side angular correlations in proton-lead collisions at the LHC, Phys. Lett. B 718 (2013) 795 [arXiv:1210.5482] [INSPIRE].
PHENIX collaboration, A. Adare et al., Quadrupole anisotropy in dihadron azimuthal correlations in central d + Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. Lett. 111 (2013) 212301 [arXiv:1303.1794] [INSPIRE].
PHENIX collaboration, A. Adare et al., Measurements of elliptic and triangular flow in high-multiplicity 3 He + Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. Lett. 115 (2015) 142301 [arXiv:1507.06273] [INSPIRE].
ATLAS collaboration, Measurement of long-range pseudorapidity correlations and azimuthal harmonics in \( \sqrt{s_{N\ N}} = 5.02 \) TeV proton-lead collisions with the ATLAS detector, Phys. Rev. C 90 (2014) 044906 [arXiv:1409.1792] [INSPIRE].
CMS collaboration, Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions, Phys. Lett. B 724 (2013) 213 [arXiv:1305.0609] [INSPIRE].
ALICE collaboration, Multiplicity dependence of pion, kaon, proton and Lambda production in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 728 (2014) 25 [arXiv:1307.6796] [INSPIRE].
CMS collaboration, Study of the production of charged pions, kaons and protons in pPb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Eur. Phys. J. C 74 (2014) 2847 [arXiv:1307.3442] [INSPIRE].
ALICE collaboration, Long-range angular correlations of π, K and p in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 726 (2013) 164 [arXiv:1307.3237] [INSPIRE].
CMS collaboration, Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies, Phys. Lett. B 742 (2015) 200 [arXiv:1409.3392] [INSPIRE].
PHENIX collaboration, A. Adare et al., Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central d+Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. Lett. 114 (2015) 192301 [arXiv:1404.7461] [INSPIRE].
P. Bozek, Collective flow in p-Pb and d-Pd collisions at TeV energies, Phys. Rev. C 85 (2012) 014911 [arXiv:1112.0915] [INSPIRE].
P. Bozek and W. Broniowski, Collective dynamics in high-energy proton-nucleus collisions, Phys. Rev. C 88 (2013) 014903 [arXiv:1304.3044] [INSPIRE].
P. Bozek, W. Broniowski and G. Torrieri, Mass hierarchy in identified particle distributions in proton-lead collisions, Phys. Rev. Lett. 111 (2013) 172303 [arXiv:1307.5060] [INSPIRE].
K. Werner, B. Guiot, I. Karpenko and T. Pierog, Analysing radial flow features in p-Pb and p-p collisions at several TeV by studying identified particle production in EPOS3, Phys. Rev. C 89 (2014) 064903 [arXiv:1312.1233] [INSPIRE].
P. Romatschke, Light-heavy ion collisions: a window into pre-equilibrium QCD dynamics?, Eur. Phys. J. C 75 (2015) 305 [arXiv:1502.04745] [INSPIRE].
ATLAS collaboration, Centrality and rapidity dependence of inclusive jet production in \( \sqrt{s_{N\ N}} = 5.02 \) TeV proton-lead collisions with the ATLAS detector, Phys. Lett. B 748 (2015) 392 [arXiv:1412.4092] [INSPIRE].
ALICE collaboration, Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 749 (2015) 68 [arXiv:1503.00681] [INSPIRE].
ALICE collaboration, Transverse momentum dependence of inclusive primary charged-particle production in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Eur. Phys. J. C 74 (2014) 3054 [arXiv:1405.2737] [INSPIRE].
CMS collaboration, Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Eur. Phys. J. C 75 (2015) 237 [arXiv:1502.05387] [INSPIRE].
R. Baier, Y.L. Dokshitzer, A.H. Mueller, S. Peigne and D. Schiff, Radiative energy loss of high-energy quarks and gluons in a finite volume quark-gluon plasma, Nucl. Phys. B 483 (1997) 291 [hep-ph/9607355] [INSPIRE].
J.-Y. Ollitrault, Relativistic hydrodynamics for heavy-ion collisions, Eur. J. Phys. 29 (2008) 275 [arXiv:0708.2433] [INSPIRE].
PHENIX collaboration, A. Adare et al., Cold-nuclear-matter effects on heavy-quark production in d + Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. Lett. 109 (2012) 242301 [arXiv:1208.1293] [INSPIRE].
ALICE collaboration, Measurement of prompt D-meson production in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Rev. Lett. 113 (2014) 232301 [arXiv:1405.3452] [INSPIRE].
ALICE collaboration, Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 754 (2016) 81 [arXiv:1509.07491] [INSPIRE].
CMS collaboration, Study of B meson production in p + Pb Collisions at \( \sqrt{\Big(}{s}_{N\ N} = 5.02 \) TeV using exclusive hadronic decays, Phys. Rev. Lett. 116 (2016) 032301 [arXiv:1508.06678] [INSPIRE].
CMS collaboration, Transverse momentum spectra of inclusive b jets in pPb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 754 (2016) 59 [arXiv:1510.03373] [INSPIRE].
LHCb collaboration, Study of J/ψ production and cold nuclear matter effects in pP b collisions at \( \sqrt{s_{N\ N}} = 5 \) TeV, JHEP 02 (2014) 072 [arXiv:1308.6729] [INSPIRE].
ALICE collabroation, Heavy-flavour correlations in pp, p-Pb and Pb-Pb collisions, Nucl. Phys. A931 (2014) 563 [INSPIRE].
ALICE collaboration, E. Pereira de Oliveira Filho, Measurements of electrons from heavy-flavour hadron decays in pp, p-Pb and Pb-Pb collisions with ALICE at the LHC, Nucl. Phys. A 932 (2014) 258 [arXiv:1404.3983] [INSPIRE].
PHENIX collaboration, A. Adare et al., Heavy-flavor electron-muon correlations in p + p and d + Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. C 89 (2014) 034915 [arXiv:1311.1427] [INSPIRE].
ALICE collaboration, Forward-central two-particle correlations in p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, Phys. Lett. B 753 (2016) 126 [arXiv:1506.08032] [INSPIRE].
A.M. Sickles, Possible evidence for radial flow of heavy mesons in d + Au collisions, Phys. Lett. B 731 (2014) 51 [arXiv:1309.6924] [INSPIRE].
M. Nardi, A. Beraudo, A. De Pace, M. Monteno and F. Prino, Heavy flavor in nucleus-nucleus and proton-nucleus: quenching, flow and correlations, in the proceedings of the 7th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2015), June 29-July 3, Montreal, Canada (2015), arXiv:1509.04083 [INSPIRE].
A. Beraudo, Heavy-flavor transport, J. Phys. Conf. Ser. 668 (2016) 012006 [arXiv:1509.04530] [INSPIRE].
A. Beraudo, A. De Pace, W.M. Alberico and A. Molinari, Transport properties and langevin dynamics of heavy quarks and quarkonia in the quark gluon plasma, Nucl. Phys. A 831 (2009) 59 [arXiv:0902.0741] [INSPIRE].
W.M. Alberico et al., Heavy-flavour spectra in high energy nucleus-nucleus collisions, Eur. Phys. J. C 71 (2011) 1666 [arXiv:1101.6008] [INSPIRE].
W.M. Alberico et al., Heavy flavors in AA collisions: production, transport and final spectra, Eur. Phys. J. C 73 (2013) 2481 [arXiv:1305.7421] [INSPIRE].
A. Beraudo, A. De Pace, M. Monteno, M. Nardi and F. Prino, Heavy flavors in heavy-ion collisions: quenching, flow and correlations, Eur. Phys. J. C 75 (2015) 121 [arXiv:1410.6082] [INSPIRE].
M.L. Miller, K. Reygers, S.J. Sanders and P. Steinberg, Glauber modeling in high energy nuclear collisions, Ann. Rev. Nucl. Part. Sci. 57 (2007) 205 [nucl-ex/0701025] [INSPIRE].
A. Bzdak, B. Schenke, P. Tribedy and R. Venugopalan, Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus collisions, Phys. Rev. C 87 (2013) 064906 [arXiv:1304.3403] [INSPIRE].
B. Alver et al., Importance of correlations and fluctuations on the initial source eccentricity in high-energy nucleus-nucleus collisions, Phys. Rev. C 77 (2008) 014906 [arXiv:0711.3724] [INSPIRE].
L. Del Zanna et al., Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP, Eur. Phys. J. C 73 (2013) 2524 [arXiv:1305.7052] [INSPIRE].
S. Alioli, P. Nason, C. Oleari and E. Re, A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX, JHEP 06 (2010) 043 [arXiv:1002.2581] [INSPIRE].
K.J. Eskola, H. Paukkunen and C.A. Salgado, EPS09: a new generation of NLO and LO nuclear parton distribution functions, JHEP 04 (2009) 065 [arXiv:0902.4154] [INSPIRE].
Hard Probe collaboration, R. Vogt, The A dependence of open charm and bottom production, Int. J. Mod. Phys. E 12 (2003) 211 [hep-ph/0111271] [INSPIRE].
R.L. Thews and M.L. Mangano, Momentum spectra of charmonium produced in a quark-gluon plasma, Phys. Rev. C 73 (2006) 014904 [nucl-th/0505055] [INSPIRE].
D. Banerjee, S. Datta, R. Gavai and P. Majumdar, Heavy quark momentum diffusion coefficient from lattice QCD, Phys. Rev. D 85 (2012) 014510 [arXiv:1109.5738] [INSPIRE].
A. Francis, O. Kaczmarek, M. Laine and J. Langelage, Towards a non-perturbative measurement of the heavy quark momentum diffusion coefficient, PoS (LATTICE 2011) 202 [arXiv:1109.3941] [INSPIRE].
A. Francis, O. Kaczmarek, M. Laine, M. Müller, T. Neuhaus and H. Ohno, Towards the continuum limit in transport coefficient computations, PoS (LATTICE 2013) [arXiv:1311.3759] [INSPIRE].
A. Francis, O. Kaczmarek, M. Laine, T. Neuhaus and H. Ohno, Nonperturbative estimate of the heavy quark momentum diffusion coefficient, Phys. Rev. D 92 (2015) 116003 [arXiv:1508.04543] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 physics and manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
STAR collaboration, L. Adamczyk et al., Observation of D 0 meson nuclear modifications in Au + Au collisions at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. Lett. 113 (2014) 142301 [arXiv:1404.6185] [INSPIRE].
ALICE collaboration, D meson elliptic flow in non-central Pb-Pb collisions at \( \sqrt{s_{N\ N}} = 2.76 \) TeV, Phys. Rev. Lett. 111 (2013) 102301 [arXiv:1305.2707] [INSPIRE].
H. van Hees, M. Mannarelli, V. Greco and R. Rapp, Nonperturbative heavy-quark diffusion in the quark-gluon plasma, Phys. Rev. Lett. 100 (2008) 192301 [arXiv:0709.2884] [INSPIRE].
M. He, R.J. Fries and R. Rapp, D s -meson as quantitative probe of diffusion and hadronization in nuclear collisions, Phys. Rev. Lett. 110 (2013) 112301 [arXiv:1204.4442] [INSPIRE].
Y. Xu et al., Heavy-flavor dynamics in relativistic p-Pb collisions at \( \sqrt{s_{N\ N}} = 5.02 \) TeV, arXiv:1510.07520 [INSPIRE].
Z.-B. Kang, I. Vitev, E. Wang, H. Xing and C. Zhang, Multiple scattering effects on heavy meson production in p+A collisions at backward rapidity, Phys. Lett. B 740 (2015) 23 [arXiv:1409.2494] [INSPIRE].
R. Sharma, I. Vitev and B.-W. Zhang, Light-cone wave function approach to open heavy flavor dynamics in QCD matter, Phys. Rev. C 80 (2009) 054902 [arXiv:0904.0032] [INSPIRE].
H. Fujii and K. Watanabe, Heavy quark pair production in high energy pA collisions: open heavy flavors, Nucl. Phys. A 920 (2013) 78 [arXiv:1308.1258] [INSPIRE].
H. Fujii and K. Watanabe, Leptons from heavy-quark semileptonic decay in pA collisions within the CGC framework, arXiv:1511.07698 [INSPIRE].
M. Luzum and P. Romatschke, Conformal relativistic viscous hydrodynamics: applications to RHIC results at \( \sqrt{s_{N\ N}} = 200 \) GeV, Phys. Rev. C 78 (2008) 034915 [Erratum ibid. C 79 (2009) 039903] [arXiv:0804.4015] [INSPIRE].
M. Luzum and P. Romatschke, Viscous hydrodynamic predictions for nuclear collisions at the LHC, Phys. Rev. Lett. 103 (2009) 262302 [arXiv:0901.4588] [INSPIRE].
ALICE collaboration, Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at \( \sqrt{s_{N\ N}} = 2.76 \) TeV, Phys. Rev. Lett. 105 (2010) 252301 [arXiv:1011.3916] [INSPIRE].
PHOBOS collaboration, B.B. Back et al., Energy dependence of particle multiplicities in central Au+Au collisions, Phys. Rev. Lett. 88 (2002) 022302 [nucl-ex/0108009] [INSPIRE].
PHOBOS collaboration, B.B. Back et al., Centrality dependence of the charged particle multiplicity near mid-rapidity in Au + Au collisions at \( \sqrt{s_{N\ N}} = 130 \) GeV and 200 GeV, Phys. Rev. C 65 (2002) 061901 [nucl-ex/0201005] [INSPIRE].
ALICE collaboration, Centrality dependence of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at \( \sqrt{s_{N\ N}}=2.76 \) TeV, Phys. Rev. Lett. 106 (2011) 032301 [arXiv:1012.1657] [INSPIRE].
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Beraudo, A., De Pace, A., Monteno, M. et al. Heavy-flavour production in high-energy d-Au and p-Pb collisions. J. High Energ. Phys. 2016, 123 (2016). https://doi.org/10.1007/JHEP03(2016)123
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DOI: https://doi.org/10.1007/JHEP03(2016)123