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How Protons Shatter Colored Glass

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arxiv hep-ph/0105268 v2 pith:57R4F4TS submitted 2001-05-25 hep-ph nucl-th

classification hep-phnucl-th
keywords rapiditycentralcolorglassregioncollisionscondensatedensity
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider the implications of the Color Glass Condensate for the central region of p+A collisions. We compute the k_t distribution of radiated gluons and their rapidity distribution dN/dy analytically, both in the perturbative regime and in the region between the two saturation momenta. We find an analytic expression for the number of produced gluons which is valid when the saturation momentum of the proton is much less than that of the nucleus. We discuss the scaling of the produced multiplicity with A. We show that the slope of the rapidity density dN/dy provides an experimental measure for the renormalization-group evolution of the color charge density of the Color Glass Condensate (CGC). We also argue that these results are easily generalized to collisions of nuclei of different A at central rapidity, or with the same A but at a rapidity far from the central region.

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Cited by 4 Pith papers

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  1. (3+1)D event-by-event pre-equilibrium dynamics in heavy-ion collisions

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  2. Effects of sub-nucleonic fluctuations on the longitudinal structure of heavy-ion collisions

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    Sub-nucleonic hotspots in the initial state increase longitudinal flow decorrelation and reduce baryon stopping in simulated Pb+Pb collisions, but the model still underestimates decorrelation in mid-central events.

  3. QCD-Gravity double copy in Regge asymptotics: from $2\rightarrow n$ amplitudes to radiation in shockwave collisions

    hep-th 2025-07 accept novelty 3.0 of 10

    A lecture-note synthesis showing that the same Lipatov vertices and reggeized propagators govern multi-particle production in QCD and gravity, with double-copy, Weinberg soft, and shockwave limits all connected in one...

  4. Effective theories for nuclei at high energies

    hep-ph 2025-02 unverdicted novelty 1.0 of 10

    This paper reviews the Color Glass Condensate effective theory, covering its foundations, its role in deep inelastic scattering, and its use in setting initial conditions for heavy-ion collisions.

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