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High Energy Physics - Phenomenology

arXiv:0811.1100 (hep-ph)
[Submitted on 7 Nov 2008]

Title:Manifestation of three-body forces in three-body Bethe-Salpeter and light-front equations

Authors:V.A. Karmanov, P. Maris
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Abstract: Bethe-Salpeter and light-front bound state equations for three scalar particles interacting by scalar exchange-bosons are solved in ladder truncation. In contrast to two-body systems, the three-body binding energies obtained in these two approaches differ significantly from each other: the ladder kernel in light-front dynamics underbinds by approximately a factor of two compared to the ladder Bethe-Salpeter equation. By taking into account three-body forces in the light-front approach, generated by two exchange-bosons in flight, we find that most of this difference disappears; for small exchange masses, the obtained binding energies coincide with each other.
Comments: 24 pages, 8 figures, submitted in Few-Body Systems
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th)
Cite as: arXiv:0811.1100 [hep-ph]
  (or arXiv:0811.1100v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.0811.1100
Journal reference: Few Body Syst.46:95-113,2009
Related DOI: https://doi.org/10.1007/s00601-009-0054-3

Submission history

From: Vladimir Karmanov [view email]
[v1] Fri, 7 Nov 2008 10:17:53 UTC (80 KB)
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