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arXiv · 1307.5911

Mapping the Proton's Fluctuating Waistline

Christopher E Coleman-Smith·Berndt Müller
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Abstract

We discuss a mechanism for the apparently universal scaling in the high-multiplicity tail of charged particle distributions for high energy nuclear collisions. We argue that this scaling behavior originates from rare fluctuations of the nucleon density. We discuss a pair of simple models of proton shape fluctuations. A "fat" proton with a size of 3 fm occurs with observable frequency. In light of this result, collective flow behavior in the ensuing nuclear interaction seems feasible. We discuss the influence of these models on the large $x$ structure of the proton and the likely influences on the distribution of initial state spatial eccentricities $ε_{n}$.

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Christopher E Coleman-Smith, Berndt Müller. 2014-01-10. Mapping the Proton's Fluctuating Waistline. https://doi.org/10.1103/physrevd.89.025019

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