Chiral dynamics for open- charm systems at PANDA

Guo, Xiaoyu (2018)
Chiral dynamics for open- charm systems at PANDA.
Technische Universität Darmstadt
Ph.D. Thesis, Primary publication

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Item Type:

Ph.D. Thesis

Type of entry:

Primary publication

Title:

Chiral dynamics for open- charm systems at PANDA

Language:

English

Referees:

Lutz, Prof.Dr. Matthias F.M. ; Schwenk, Prof.Dr. Achim

Date:

2018

Place of Publication:

Darmstadt

Date of oral examination:

15 February 2017

Abstract:

This thesis aims to study low-energy strong interaction effects of open-charm mesons. Our studies are based on the chiral Lagrangian supplemented by constraints from the heavy-quark spin symmetry. The pseudoscalar and vector open-charm-meson masses are calculated up to next-to-next-to-next leading order (N^3LO) corrections. Different assumptions on the counting rules are investigated. It is illustrated that a chiral expansion uniformly converges rapidly up to Goldstone boson masses as heavy as the kaon masses if formulated in terms of physical meson masses. First estimates of the relevant low-energy parameters are extracted from lattice QCD data on the quark mass dependence of the D meson masses. Such low-energy parameters are of crucial importance for the low-energy interaction of the Goldstone bosons with the D mesons.

Alternative Abstract:

Alternative Abstract

Language

In dieser Arbeit untersuchen wir stark wechselwirkende Mesonsysteme mit nicht verschwindenden Charminhalt (C ≠ 0). Es kommt zur Anwendung der chiral Lagrangian, wobei die Konsequenzen der Quarkspinsymmetry der schweren Quarks eingearbeitet werden. Die Massen der pseudoskalaren und vektoriellen D Mesonen mit C = 1 werden zu N^3LO berechnet. Verschiedene Annahmen für das chirale Zählschema werden untersucht. Es wird gezeigt, dass ein Zählschema, welches mit Hilfe der physikalischen Mesonmassen formuliert ist, uniform konvergiert bis zu Massen der Pionen und Kaonen von ca 600 MeV. Erste Abschätzungen für die Niederenergieparameter des chiral Lagrangian werden aus Gitter QCD Daten für die D Mesonmassen bei verschiedenen unphysikalischen Quarkmassen abgeleitet. Diese Parameter bestimmen die Niederenergiewechselwirkung der Golstonebosonen mit den D Mesonen.

German

URN:

urn:nbn:de:tuda-tuprints-72058

Classification DDC:

500 Science and mathematics > 530 Physics

Divisions:

05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics

Date Deposited:

23 Jan 2018 12:25

Last Modified:

23 Jan 2018 12:25

URI: