arXiv : Cosmological analogies in the search for new physics in high-energy collisions

Sanchis-Lozano, Miguel-Angel; Domenech-Garret, Juan-Luis; Sarkisyan-Grinbaum, Edward K.; Sanchis-Gual, Nicolas

doi:10.1103/PhysRevD.102.035013

Article
Report number	arXiv:2006.06569 ; IFIC/20-28 ; FTUV-20-06-11
Title	Cosmological analogies in the search for new physics in high-energy collisions
Author(s)	Sanchis-Lozano, Miguel-Angel (Valencia U., IFIC ; Valencia U.) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington) ; Domenech-Garret, Juan-Luis (Madrid, Polytechnic U.) ; Sanchis-Gual, Nicolas (Lisbon, IST)
Publication	2020-08-11
Imprint	2020-06-11
Number of pages	7
Note	9 pages, 5 figures
In:	Phys. Rev. D 102 (2020) 035013
DOI	10.1103/PhysRevD.102.035013
Subject category	astro-ph.CO ; Astrophysics and Astronomy ; hep-ph ; Particle Physics - Phenomenology
Abstract	In this paper, analogies between multiparticle production in high-energy collisions and the time evolution of the early universe are discussed. A common explanation is put forward under the assumption of an unconventional early state: a rapidly expanding universe before recombination (last scattering surface), followed by the CMB, later evolving up to present days, versus the formation of hidden/dark states in hadronic collisions followed by a conventional QCD parton shower yielding final-state particles. In particular, long-range angular correlations are considered pointing out deep connections between the two physical cases potentially useful for the discovery of new physics.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2020-2025 authors (License: CC-BY-4.0), sponsored by SCOAP³

$Time evolution of the parton shower in high-energy collisions with formation of an initial hidden stage of matter evolving into bound states (equivalent to recombination in cosmology) after a time $t$, followed by a decay back to SM quarks and gluon partons lasting about $t_{\qcdg}$. There could also be hidden particles not decaying back to SM and therefore not detected, represented as dashed arrows.$ ${\em Left}: Contour plot of the 3-particle correlation function $C_3(\Delta \phi_{12},\Delta \phi_{13})$ of a 3-step cascade with an initial long-range contribution from a hidden sector; {\em Right}: Diagonal projection of $C _3(\Delta \phi_{12},\Delta \phi_{13})$, where the peak at $\Delta \phi_1= \Delta \phi_2=0$ is normalized to unity. The dotted (red), dashed (magenta) and thin solid (blue) curves show the contributions from one, two and three hidden particles, respectively. The weighted sum is shown by the thick (turquoise) curve. Plots are taken from our work \cite{Sanchis-Lozano:2018wpz}.$ ${\em Left}: Contour plot of the 3-particle correlation function $C_3(\Delta \phi_{12},\Delta \phi_{13})$ of a 3-step cascade with an initial long-range contribution from a hidden sector; {\em Right}: Diagonal projection of $C _3(\Delta \phi_{12},\Delta \phi_{13})$, where the peak at $\Delta \phi_1= \Delta \phi_2=0$ is normalized to unity. The dotted (red), dashed (magenta) and thin solid (blue) curves show the contributions from one, two and three hidden particles, respectively. The weighted sum is shown by the thick (turquoise) curve. Plots are taken from our work \cite{Sanchis-Lozano:2018wpz}.$ Show more plots

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