Search Results - "U.-G. Meissner"

Precision Nucleon-Nucleon Potential at Fifth Order in the Chiral Expansion by Epelbaum, E, Krebs, H, Meißner, U-G

“…We present a nucleon-nucleon potential at fifth order in chiral effective field theory. We find a substantial improvement in the description of nucleon-nucleon…”
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Hyperon–nucleon interaction within chiral effective field theory revisited by Haidenbauer, J., Meißner, U.-G., Nogga, A.

“…The Λ N and Σ N interactions are considered at next-to-leading order in SU(3) chiral effective field theory. Different options for the low-energy constants…”
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Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order by Epelbaum, E., Krebs, H., Meißner, U. -G.

“… We present improved nucleon-nucleon potentials derived in chiral effective field theory up to next-to-next-to-next-to-leading order. We argue that the…”
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The electromagnetic form factors of the Λ in the timelike region by Haidenbauer, J., Meißner, U.-G.

“…The reaction e+e−→Λ¯Λ is investigated for energies close to the threshold. Specific emphasis is put on the role played by the interaction in the final Λ¯Λ…”
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Reconciling threshold and subthreshold expansions for pion–nucleon scattering by Siemens, D., Ruiz de Elvira, J., Epelbaum, E., Hoferichter, M., Krebs, H., Kubis, B., Meißner, U.-G.

“…Heavy-baryon chiral perturbation theory (ChPT) at one loop fails in relating the pion–nucleon amplitude in the physical region and for subthreshold kinematics…”
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Hyperon–nucleon interaction at next-to-leading order in chiral effective field theory by Haidenbauer, J., Petschauer, S., Kaiser, N., Meißner, U.-G., Nogga, A., Weise, W.

“…Results for the ΛN and ΣN interactions obtained at next-to-leading order in chiral effective field theory are reported. At the order considered there are…”
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Definition of Local Spatial Densities in Hadrons by Epelbaum, E., Gegelia, J., Lange, N., Meißner, U.-G., Polyakov, M. V.

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In-medium properties of a ΞN interaction derived from chiral effective field theory by Haidenbauer, J., Meißner, U. -G.

“… The in-medium properties of a Ξ N potential derived within chiral effective field theory up to next-to-leading order are investigated. The considered Ξ N…”
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The electromagnetic form factors of the proton in the timelike region by Haidenbauer, J., Kang, X.-W., Meißner, U.-G.

“…The reactions p¯p→e+e− and e+e−→p¯p are analyzed in the near-threshold region. Specific emphasis is put on the role played by the interaction in the initial or…”
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Electromagnetic and gravitational local spatial densities for spin-1 systems by Panteleeva, J. Yu, Epelbaum, E., Gegelia, J., Meißner, U.-G.

“…A bstract The matrix elements of the electromagnetic current and the energy-momentum tensor for sharply localized states of spin-1 systems are considered…”
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Towards high-order calculations of three-nucleon scattering in chiral effective field theory by Epelbaum, E., Golak, J., Hebeler, K., Kamada, H., Krebs, H., Meißner, U.-G., Nogga, A., Reinert, P., Skibiński, R., Topolnicki, K., Volkotrub, Yu, Witała, H.

“…We discuss the current status of chiral effective field theory in the three-nucleon sector and present selected results for nucleon–deuteron scattering…”
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Definition of gravitational local spatial densities for spin-0 and spin-1/2 systems by Panteleeva, J. Yu, Epelbaum, E., Gegelia, J., Meißner, U. -G.

“…We work out details of defining the spatial densities corresponding to the gravitational form factors of spin-0 and spin-1/2 systems using spherically…”
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Nuclear Electromagnetic Currents to Fourth Order in Chiral Effective Field Theory by Krebs, H., Epelbaum, E., Meißner, U.-G.

“…Recently, we have shown that the continuity equation for the nuclear vector and axial current operators acquires additional terms if the latter depend on the…”
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Lambda-nuclear interactions and hyperon puzzle in neutron stars by Haidenbauer, J., Meißner, U. -G., Kaiser, N., Weise, W.

“… Brueckner theory is used to investigate the in-medium properties of a Λ -hyperon in nuclear and neutron matter, based on hyperon-nucleon interactions derived…”
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Local spatial densities for composite spin-3/2 systems by Alharazin, H., Sun, B.-D., Epelbaum, E., Gegelia, J., Meißner, U.-G.

“…A bstract The definition of local spatial densities by using sharply localized one-particle states is applied to spin-3/2 systems. Matrix elements of the…”
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Gravitational form factors of the delta resonance in chiral EFT by Alharazin, H., Epelbaum, E., Gegelia, J., Meißner, U.-G., Sun, B.-D.

“…The leading one-loop corrections to the gravitational form factors of the delta resonance are calculated in the framework of chiral effective field theory…”
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Matrix elements of unstable states by Bernard, V., Hoja, D., Meißner, U.-G., Rusetsky, A.

“…A bstract Using the language of non-relativistic effective Lagrangians, we formulate a systematic framework for the calculation of resonance matrix elements in…”
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Nuclear axial current operators to fourth order in chiral effective field theory by Krebs, H., Epelbaum, E., Meißner, U.-G.

“…We present the complete derivation of the nuclear axial charge and current operators as well as the pseudoscalar operators to fourth order in the chiral…”
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The impact of K+Λ photoproduction on the resonance spectrum by Ronchen, D., Doring, M., MeiBner, U. -G.

“… The Jülich-Bonn coupled-channel framework is extended to K + Λ photoproduction. The spectrum of nucleon and Δ resonances is extracted from simultaneous fits…”
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Gravitational p → ∆+ transition form factors in chiral perturbation theory by Alharazin, H., Sun, B.-D., Epelbaum, E., Gegelia, J., Meißner, U.-G.

“…A bstract The gravitational form factors of the transition from the proton to the ∆ + resonance are calculated to leading one-loop order using a manifestly…”
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