Baryon Masses in Partially Quenched Heavy Hadron Chiral Perturbation Theory

The masses of baryons containing a heavy quark are calculated to next-to-leading order in partially quenched heavy hadron chiral perturbation theory. Calculations are performed for three light flavors in the isospin limit and additionally for two light non-degenerate flavors. The results presented are necessary for extrapolating lattice QCD and partially quenched lattice QCD calculations of the heavy hadron masses.Comment: 20 pages, 2 figures, RevTex

When Pandora’s Box Is Opened: A Qualitative Study of the Intended and Unintended Impacts Of Wyoming’s New Standardized Tests on Local Educators’ Everyday Practices

In the context of a newly adopted statewide assessment system, PAWS (Proficiency Assessment for Wyoming Students), this paper describes intended instructional changes and unintended outcomes in classrooms and schools as a result of an assessment policy involving an innovative online portion of the test. An elementary school was selected and prolonged qualitative fieldwork with in - depth and focus group interviews were conducted for 1½ years. A constant comparative data analysis and interpretation from grounded theory methodology led to the following themes: adaptive implementation policy, teachers’ dilemmas, instructional change, and school culture change. While observing an elusive role for teachers that involved external accountability factors, researchers also found a practical hope for future PAWS tests, foreshadowing the need for promptly delivered test results for realistic instructional improvement