We perform a non-perturbative chiral study of the masses of the lightest pseudoscalar mesons. The pseudoscalar self-energies are calculated by the evaluation of the scalar self-energy loops with full S-wave meson-meson amplitudes taken from Unitary Chiral Perturbation Theory (UCHPT). These amplitudes, among other features, contain the lightest nonet of scalar resonances σ, f0(980), a0(980) and ...

Invasive lobular breast cancer (ILC) is a special histological subtype for which endocrine treatment effective, but options thereafter are limited. ILC appears to be different disease entity than invasive of no type. Translational data suggested that subgroup has high expression immune-related genes. Preclinical revealed this may responsive combined platinum and immune checkpoint blockade. Here...

Preliminary results from the MILC collaboration for fB, fBs, fD, fDs and their ratios are presented. We compute in the quenched approximation at = 6:3, 6.0 and 5.7 with Wilson light quarks and static and Wilson heavy quarks. We attempt to quantify all systematic errors other than quenching, and have a rst indication of the size of quenching errors.

The Kugo-Ojima confinement criterion is verified in the unquenched Landau gauge QCD simulation. The valence quark propagator of the Kogut-Susskind fermion with use of the fermion action including the Naik term and the staple contribution is calculated on MILC Asqtad unquenched gauge configurations, and it shows clear evidence of infrared vanishing of the quark propagator.

Steven Gottlieb, L. Levkova † Department of Physics, Indiana University, Bloomington, Indiana 47405, USA E-mail: [email protected] M. Di Pierro School of Computer Science, Telecommunications and Information Systems, DePaul University, Chicago, Illinois 60604, USA A. El-Khadra Physics Department, University of Illinois, Urbana, Illinois 61801, USA A.S. Kronfeld, P.B. Mackenzie, J. Simone Fermi Nati...

We give an update on our calculation of BK using HYP-smeared valence staggered quarks. We have results for BK at tree-level on several coarse MILC lattices (a ≈ 0.12fm) and one of the fine lattices (a ≈ 0.09fm), using 10 light valence quarks ranging down to m s /10. We have generalized staggered chiral perturbation theory to our mixed action setup, and outline the results. We explain our presen...

Experimental evidence suggests the existence of particles with “exotic” quantum numbers J = 1−+, such as the π1(1400) [1] and the π1(1600) [2]. Explanations of these include fourquark states and hybrid mesons — mesons with gluonic excitations. Several lattice studies [3–5] have used quenched Wilson and improved Wilson fermions to explore the possibility of such hybrid states. Using both quenche...