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Saturation scale fluctuations and multiparticle rapidity correlations
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DOI：10.1103/PhysRevC.94.044918.png)
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摘要
En 中文
We study the effect of intrinsic fluctuations of the proton saturation momentum scale on event-by-event rapidity distributions. Saturation scale fluctuations generate an asymmetry in the single-particle rapidity distribution in each event resulting in genuine n-particle correlations having a component linear in the rapidities of the produced particles, y(1)...y(n). We introduce a color domain model that naturally explains the centrality dependence of the two-particle rapidity correlations recently measured by ATLAS [M. Aaboud et al. (ATLAS Collaboration), arXiv:1606.08170] while constraining the probability distribution of saturation scale fluctuations in the proton. Predictions for n = 4, 6, and 8 particle correlations find that the four- and eight-particle cumulants change sign at an intermediate multiplicity, a signature which could be tested experimentally.
Keyword:
HIGH-ENERGY EVOLUTION
ANGULAR-CORRELATIONS
LONG-RANGE
QCD
COLLISIONS
EQUATION
SIDE
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期刊
IF:
3.4
论文数:
2.9W
被引数:
5.7W
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Simple model for rapidity fluctuations in the initial state of ultrarelativistic heavy-ion collisions.png)
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