The mass of the Delta resonance in a finite volume: fourth-order calculation
| Autor: | Ulf-G. Meißner, D. Hoja, Véronique Bernard, Akaki Rusetsky |
|---|---|
| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Quark
Nuclear and High Energy Physics Scale (ratio) [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] High Energy Physics::Lattice Lattice field theory Nuclear Theory FOS: Physical sciences Lattice QCD 01 natural sciences Resonance (particle physics) finite size [correction] High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Lattice 0103 physical sciences quantum chromodynamics Effective field theory mass [quark] ddc:530 010306 general physics numerical calculations chiral [effective field theory] mass [Delta(1232)] Quantum chromodynamics Physics Finite volume method Lattice Quantum Field Theory 010308 nuclear & particles physics High Energy Physics - Lattice (hep-lat) High Energy Physics::Phenomenology lattice field theory low-energy constant High Energy Physics - Phenomenology parametrization [energy spectrum] 3/2 [spin] Quantum electrodynamics Chiral Lagrangians pi nucleon propagator [Delta(1232)] |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Springer, 2009, 06(2009), pp.061. ⟨10.1088/1126-6708/2009/06/061⟩ Journal of high energy physics 2009, 061 (2009). doi:10.1088/1126-6708/2009/06/061 |
| ISSN: | 1126-6708 1029-8479 |
| DOI: | 10.1088/1126-6708/2009/06/061⟩ |
| Popis: | We calculate the self-energy of the Delta (1232) resonance in a finite volume, using chiral effective field theory with explicit spin-3/2 fields. The calculations are performed up-to-and-including fourth order in the small scale expansion and yield an explicit parameterization of the energy spectrum of the interacting pion-nucleon pair in a finite box in terms of both the quark mass and the box size L. It is shown that finite-volume corrections can be sizeable at small quark masses. 21 pages, 7 figures |
| Databáze: | OpenAIRE |
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