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Volume 297 - XXV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2017) - WG2 Low x and Diffraction
Proton structure fluctuations: from HERA to the LHC
H. Mäntysaari,* B. Schenke, C. Shen, P. Tribedy
*corresponding author
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Pre-published on: 2017 September 12
Published on: 2018 January 16
We constrain the amount of event-by-event fluctuations of the proton by comparing with the HERA coherent and incoherent diffractive $J/\Psi$ production data. We find that the HERA measurements prefer large geometric fluctuations. We then include the constrained fluctuating proton shapes in viscous hydrodynamical simulations of the proton-nucleus collisions at $\sqrt{s_{NN}}=5.02$ TeV, and find a good description of the mean transverse momentum and flow harmonics measured at the LHC.
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