On kaonic deuterium. Quantum field theoretic and relativistic covariant approach

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dc.creatorIvanov, A. N.
dc.creatorCargnelli, M.
dc.creatorFaber, M.
dc.creatorFuhrmann, H.
dc.creatorIvanova, V. A.
dc.creatorMarton, J.
dc.creatorTroitskaya, N. I.
dc.creatorZmeskal, J.
dc.date2004-06-16
dc.date2006-07-04
dc.date.accessioned2026-07-07T11:32:44Z
dc.date.available2026-07-07T11:32:44Z
dc.descriptionWe study kaonic deuterium, the bound K^-d state A_(K d). Within a quantum field theoretic and relativistic covariant approach we derive the energy level displacement of the ground state of kaonic deuterium in terms of the amplitude of K^-d scattering for arbitrary relative momenta. Near threshold our formula reduces to the well-known DGBT formula. The S-wave amplitude of K^-d scattering near threshold is defined by the resonances Lambda(1405), Sigma(1750) and a smooth elastic background, and the inelastic channels K^- d -> NY and K^- d -> NY pion, with Y = Sigma^(+/-), Sigma^0 and Lambda^0, where the final-state interactions play an important role. The Ericson-Weise formula for the S-wave scattering length of K^-d scattering is derived. The total width of the energy level of the ground state of kaonic deuterium is estimated using the theoretical predictions of the partial widths of the two-body decays A_(Kd) -> NY and experimental data on the rates of the NY-pair production in the reactions K^-d -> NY. We obtain Gamma_{1s} = (630 +/-100) eV. For the shift of the energy level of the ground state of kaonic deuterium we predict epsilon_(1s) = (353 +/-60)eV.
dc.description73 pages,10 figures, Latex, We have slightly corrected the contribution of the double scattering. The change of the S-wave scattering length of K^-d scattering does not go beyond the theoretical uncertainty, which is about 18%
dc.identifierhttps://arxiv.org/abs/nucl-th/0406053
dc.identifierhttp://arxiv.org/abs/nucl-th/0406053
dc.identifierEur.Phys.J.A23:79-111,2005
dc.identifierdoi:10.1140/epja/i2004-10055-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197700
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.titleOn kaonic deuterium. Quantum field theoretic and relativistic covariant approach
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