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 (70)

• Running the gamut of high energy nuclear collisions
• The ALICE experiment: a journey through QCD
• The Muon Puzzle in cosmic-ray induced air showers and its connection to the Large Hadron Collider
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• A collision geometry-based 3D initial condition for relativistic heavy-ion collisions
• Imaging the nucleus with high-energy photons
• Bayesian estimation of the specific shear and bulk viscosity of the quark-gluon plasma with additional flow harmonic observables
• The smallest fluid on earth
• 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
• Observable signatures of initial state momentum anisotropies in nuclear collisions
• Bayesian inference of the fluctuating proton shape
• ${}^{16}{\mathrm{O}}^{16}\mathrm{O}$ at RHIC and the LHC comparing $\alpha$ clustering vs substructure
• Exploring theoretical uncertainties in the hydrodynamic description of relativistic heavy-ion collisions
• Development of transverse flow at small and large opacities in conformal kinetic theory
• Generic algorithm for multi-particle cumulants of azimuthal correlations in high energy nucleus collisions
• Color charge correlations in the proton at NLO: beyond geometry based intuition
• Collectivity in Ultra-Peripheral Pb+Pb Collisions at the Large Hadron Collider
• Progress and Challenges in Small Systems
• 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
• Spin polarization and correlation of quarks from glasma
• Proton hot spots and exclusive vector meson production
• Emergence of long-range angular correlations in low-multiplicity proton-proton collisions
• Opacity dependence of transverse flow, pre-equilibrium and applicability of hydrodynamics in heavy-ion collisions
• Space-time structure of 3+1D color fields in high energy nuclear collisions
• Hot spots and gluon field fluctuations as causes of eccentricity in small systems
• Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at $\sqrt{\text{s}}=13$ TeV
• Investigating the structure of gluon fluctuations in the proton with incoherent diffraction at HERA
• Investigating high energy proton proton collisions with a multi-phase transport model approach based on PYTHIA8 initial conditions
• Two-particle azimuthal correlations in $\gamma$p interactions using pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Hydrodynamic Attractor in a Hubble Expansion
• Broad excitations in a 2+1D overoccupied gluon plasma
• Probing QGP with flow: An experimental overview
• Evolution of initial stage fluctuations in the glasma
• The impact of glasma on heavy flavor azimuthal correlations and spectra
• Far-from-equilibrium attractors with Full Relativistic Boltzmann approach in 3+1 D: moments of distribution function and anisotropic flows $v_n$
• Gluonic Hot Spot Initial Conditions in Heavy-Ion Collisions
• Global Bayesian Analysis of $\mathrm{J}/\psi$ Photoproduction on Proton and Lead Targets
• Disentangling the development of collective flow in high energy proton proton collisions with a multiphase transport model
• Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at $\sqrt{s}$ = 13 TeV and in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Coherent and incoherent Upsilon production in ultraperipheral collisions at the Large Hadron Collider
• Collective dynamics in heavy and light-ion collisions -- I) Kinetic Theory vs. Hydrodynamics
• A Gaussian Process Generative Model for QCD Equation of State
• Anomalous features of particle production in high-multiplicity events of pp collisions at the LHC energies
• Hadronization of correlated gluon fields
• Initial conditions of bulk matter in ultrarelativistic nuclear collisions
• Understanding the transverse-spherocity biased data from pp collisions at the LHC energies
• Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions
• Bayesian Constraints on Pre-Equilibrium Jet Quenching and Predictions for Oxygen Collisions
• Impact of Multiplicity Fluctuations on Entropy Scaling Across System Size
• Proton structure fluctuations: constraints from HERA and applications to p+A 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
• Importance of initial and final state effects for azimuthal correlations in p+Pb 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
• Disentangling effects of nucleon size and nucleus structure in relativistic heavy-ion collisions
• Soft QCD Physics at the LHC: highlights and opportunities
• Far-from-equilibrium attractors with a realistic non-conformal equation of state
• Gluon imaging using azimuthal correlations in diffractive scattering at the Electron-Ion Collider
• Imprints of octupole collectivity in uranium-238 on relativistic heavy-ion flow observables
• 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
• (3+1)D event-by-event pre-equilibrium dynamics in heavy-ion collisions
• Heavy flavor dynamics across system size at the LHC
• A comparison study of collisions at relativistic energies involving light nuclei
• Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion