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Hot spots and gluon field fluctuations as causes of eccentricity in small systems
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Hot spots and gluon field fluctuations as causes of eccentricity in small systems
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We calculate eccentricities in high energy proton-nucleus collisions, by calculating correlation functions of the energy density field of the Glasma immediately after the collision event at proper time tau = 0. We separately consider the effects of color charge and geometrical hot spot fluctuations, analytically performing the averages over both in a dilute-dense limit. We show that geometric fluctuations of hot spots inside the proton are the dominant source of eccentricity whereas color charge fluctuations only give a negligible correction. The size and number of hot spots are the most important parameters characterizing the eccentricities.
Forward citations
Cited by 1 Pith paper
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Saturation effects in exclusive vector meson production in DIS
A dense-limit CGC hotspot calculation shows saturation mildly suppresses exclusive vector meson cross sections in ep, with suppression growing at higher color-charge density.
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