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Jet quenching without energy loss

Apolinário, Liliana ; Le Roux, Chiara LU and Zapp, Korinna LU (2025) 2510.11914.
Abstract
The onset of jet quenching, i.e. the suppression of high transverse momentum particles and jets, is an important question in the context of understanding the onset of collective behaviour and small collision systems. We investigate a minimal scenario where a hard parton experiences a single soft re-scattering that leaves the kinematics unmodified, but the colour exchange leads to a loss of colour coherence that is observable in the final distribution of fragments. In particular, the formation time of the first splitting as reconstructed at hadron level from jets using the formation time clustering algorithm is sensitive the loss of colour coherence. Moreover, it can distinguish the coherence loss scenario from a corresponding energy loss... (More)
The onset of jet quenching, i.e. the suppression of high transverse momentum particles and jets, is an important question in the context of understanding the onset of collective behaviour and small collision systems. We investigate a minimal scenario where a hard parton experiences a single soft re-scattering that leaves the kinematics unmodified, but the colour exchange leads to a loss of colour coherence that is observable in the final distribution of fragments. In particular, the formation time of the first splitting as reconstructed at hadron level from jets using the formation time clustering algorithm is sensitive the loss of colour coherence. Moreover, it can distinguish the coherence loss scenario from a corresponding energy loss scenario, since small energy loss effects leave the formation time distribution unchanged. (Less)
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author
; and
organization
publishing date
type
Working paper/Preprint
publication status
published
subject
volume
2510.11914
pages
5 pages
publisher
arXiv.org
DOI
10.48550/arXiv.2510.11914
language
English
LU publication?
yes
id
2a794008-0ec4-4cd5-9994-18fa99eb4952
date added to LUP
2025-11-05 15:00:19
date last changed
2025-11-11 10:21:18
@misc{2a794008-0ec4-4cd5-9994-18fa99eb4952,
  abstract     = {{The onset of jet quenching, i.e. the suppression of high transverse momentum particles and jets, is an important question in the context of understanding the onset of collective behaviour and small collision systems. We investigate a minimal scenario where a hard parton experiences a single soft re-scattering that leaves the kinematics unmodified, but the colour exchange leads to a loss of colour coherence that is observable in the final distribution of fragments. In particular, the formation time of the first splitting as reconstructed at hadron level from jets using the formation time clustering algorithm is sensitive the loss of colour coherence. Moreover, it can distinguish the coherence loss scenario from a corresponding energy loss scenario, since small energy loss effects leave the formation time distribution unchanged.}},
  author       = {{Apolinário, Liliana and Le Roux, Chiara and Zapp, Korinna}},
  language     = {{eng}},
  note         = {{Preprint}},
  publisher    = {{arXiv.org}},
  title        = {{Jet quenching without energy loss}},
  url          = {{http://dx.doi.org/10.48550/arXiv.2510.11914}},
  doi          = {{10.48550/arXiv.2510.11914}},
  volume       = {{2510.11914}},
  year         = {{2025}},
}