Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The $\pi^+\Sigma^+$, $\pi^+\Xi^0$, $K^+p$, $K^+n$, and $K^0 \Xi^0$ scattering lengths are calculated in mixed-action Lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations at four light-quark masses, and at two light-quark masses on the fine MILC configurations. Heavy Baryon Chiral Perturbation Theory with two and three flavors of light quarks is used to perform the chiral extrapolations. We find no convergence for the kaon-baryon processes in the three-flavor chiral expansion. Using the two-flavor chiral expansion, we find $a_{\pi^+\Sigma^+} =?0.197 ± 0.017$ fm, and $a_{\pi^+\Xi^0} =?0.098 0.017$ fm, where the comprehensive error includes statistical and systematic uncertainties.
Author: Josef Pochodzalla Publisher: Springer Science & Business Media ISBN: 3540763678 Category : Science Languages : en Pages : 400
Book Description
This volume contains the proceedings of the IX International Conference on Hypernuclear and Strange Particle Physics (HYP 2006). This conference series is devoted to the progress of our knowledge about strangeness flavor in hadron and nuclear physics. Besides the traditional topics such as hadron structure, hypernuclear spectroscopy and weak decay of hypernuclei, a particular focus of this conference was on the properties of strange mesons and their binding in nuclear systems.
Author: A. V. Anisovich Publisher: World Scientific ISBN: 9812818251 Category : Science Languages : en Pages : 603
Book Description
This book is devoted to the investigation of the strongly interacting hadrons ? to a quark model operating with effective color particles, constituent quarks, massive effective gluons and diquarks. The study of strong interactions based on effective constituent particles requires a solid ground of experimental data, which we now have at our disposal with the serious progress made in the investigation of hadrons, especially meson states.The present understanding of QCD applied to strong interactions can be distorted by prejudices. Therefore, the way followed by the quark model is to rely on the experiment and to restore the effective Hamiltonian on the basis of QCD on the one hand, and, on the other, of the spectral integral method.Baryon-baryon and antibaryon-baryon interactions are studied with the purpose of unambiguous applications of the written formulae to the interpretation of experimental data ? to the observation of new meson and baryon resonances. The technique used is the spin-orbital momentum expansion of the amplitude. This method is our basic approach to the proper treatment of experimental data. The photon-induced reactions are also considered and the problem of form factors is discussed.
Author: Herwig Schopper Publisher: Springer Nature ISBN: 3030382079 Category : Heavy ions Languages : en Pages : 632
Book Description
This first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author: Publisher: ISBN: Category : Languages : en Pages : 7
Book Description
We study the scattering of light pseudoscalar mesons (p, K) off charmed mesons (D, D s) in full lattice QCD. The S -wave scattering lengths are calculated using Luscher's finite volume technique. We use a relativistic formulation for the charm quark. For the light quark, we use domain- wall fermions in the valence sector and improved Kogut-Susskind sea quarks. We calculate the scattering lengths of isospin-3/2 D[pi], D s[pi], D s K, isospin-0 DK and isospin-1 DK channels on the lattice. For the chiral extrapolation, we use a chiral unitary approach to next-to-leading order, which at the same time allows us to give predictions for other channels. It turns out that our results support the interpretation of the D*s0(2317) as a DK molecule. At the same time, we also update a prediction for the isospin breaking hadronic decay width G (D*s0(2317)2!D s[pi]) to (133± 22) keV.
Author: 
Author: Srijit Paul
Author: M. Fukugita
Author: Josef Pochodzalla
Author: A. M. Harun-Ar Raschid
Author: A. V. Anisovich
Author: 
Author: Herwig Schopper
Author: R. Horsley
Author: