Imprints of fluctuating proton shapes on flow in proton-lead collisions at the LHC

Abstract

Results for particle production in root-s = 5.02 TeV p+Pb collisions at the Large Hadron Collider within a combined classical Yang-Mills and relativistic viscous hydrodynamic calculation are presented. We emphasize the importance of sub-nucleon scale fluctuations in the proton projectile to describe the experimentally observed azimuthal harmonic coefficients, demonstrating their sensitivity to the proton shape. We stress that the proton shape and its fluctuations are not free parameters in our calculations. Instead, they have been constrained using experimental data from HERA on exclusive vector meson production. Including temperature dependent shear and bulk viscosities, as well as UrQMD for the low temperature regime, we present results for mean transverse momenta, harmonic flow coefficients for charged hadrons and identified particles, as well as Hanbury-Brown-Twiss radii.

8 pages, 7 figures

References in corpus (17)

• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Alternative ansatz to wounded nucleon and binary collision scaling in high-energy nuclear collisions
• Event-by-event gluon multiplicity, energy density and eccentricities at RHIC and LHC
• Analysis of combined HERA data in the Impact-Parameter dependent Saturation model
• Correlations from hydrodynamic flow in p-Pb collisions
• Eccentric protons? Sensitivity of flow to system size and shape in p+p, p+Pb and Pb+Pb collisions
• Revealing proton shape fluctuations with incoherent diffraction at high energy
• Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
• Collectivity and electromagnetic radiation in small systems
• Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions
• Do nuclear collisions create a locally equilibrated quark-gluon plasma?
• Energy dependence of dissociative $J/\psi$ photoproduction as a signature of gluon saturation at the LHC
• Holographic thermalization with radial flow
• The shape of the proton at high energies
• Bulk viscous evolution within anisotropic hydrodynamics
• Extracting the bulk viscosity of the quark-gluon plasma

Cited by in corpus (21)

• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Imaging the nucleus with high-energy photons
• Non-equilibrium attractor in high-temperature QCD plasmas
• Multi-particle and charge-dependent azimuthal correlations in heavy-ion collisions at the Relativistic Heavy-Ion Collider
• Importance of initial and final state effects for azimuthal correlations in p+Pb collisions
• Parton model description of multiparticle azimuthal correlations in $pA$ collisions
• Accessing the gluonic structure of light nuclei at the Electron Ion Collider
• Rapidity dependence of initial state geometry and momentum correlations in p+Pb collisions
• Ballistic diffusion of heavy quarks in the early stage of relativistic heavy ion collisions at RHIC and LHC
• Coherent and incoherent Upsilon production in ultraperipheral collisions at the Large Hadron Collider
• Hadronization of correlated gluon fields
• Initial conditions of bulk matter in ultrarelativistic nuclear collisions
• Anomalous features of particle production in high-multiplicity events of pp collisions at the LHC energies
• Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions
• Proton structure fluctuations: constraints from HERA and applications to p+A collisions
• Importance of initial and final state effects for azimuthal correlations in p+Pb collisions
• Ultracentral Collisions of Small and Deformed Systems at RHIC: $UU$, $dAu$, ${}^{9}BeAu$, ${}^{9}Be{}^{9}Be$, ${}^{3}He{}^{3}He$, and ${}^{3}HeAu$ Collisions
• What does the matter created in high multiplicity proton-nucleus collisions teach us about the 3-D structure of the proton?
• Pseudothermalization of the quark-gluon plasma
• Parton evolution time dependent transverse shape asymmetry in peripheral Pb-Pb and p-Pb collisions at 5.02 TeV
• Investigations of $p$+Pb Collisions at Perturbative and Non-Perturbative QCD Scales