The Role of the QCD Vacuum in the Heavy-Quark Bound State Dynamics

The effective field theory approach allows a rigorous disentangling of high and low energy effects in the heavy quarkonium dynamics. Focusing in particular on the spectrum, we describe the nature of the non-perturbative effects and discuss our present knowledge of them.Comment: Invited talk presented at the Fifth Workshop on Quantum Chromodynamics, Villefranche-sur-Mer, France, 3-7 January 2000; 9 pages, sprocl.st

The three-quark static potential in perturbation theory

We study the three-quark static potential in perturbation theory in QCD. A complete next-to-leading order calculation is performed in the singlet, octets and decuplet channels and the potential exponentiation is demonstrated. The mixing of the octet representations is calculated. At next-to-next-to-leading order, the subset of diagrams producing three-body forces is identified in Coulomb gauge and its contribution to the potential calculated. Combining it with the contribution of the two-body forces, which may be extracted from the quark-antiquark static potential, we obtain the complete next-to-next-to-leading order three-quark static potential in the colour-singlet channel.Comment: 36 pages, 11 figures, version published in Phys.Rev.

The organization and on-site follow-up of the electrical installation work for the LHC

The activity of the EL-WO section has two main purposes: manage the on-site installation works and carry out complete commissioning tests for all the new electrical installations, including those for the LHC accelerator. The management of installation works covers several aspects as: logistic, safety, coordination with other non-electrical works, follow-up of the planning. The testing of all the installation before the commissioning involves a close collaboration with the exploitation service and with the project leaders. This document describes the way of operating of the section and how these activities are carried out within the mainframe of the global ST division organization. It also describes the interfaces to the others actors of the LHC installation, such as: the contractors, the LHC installation working group, the ST/EL project leaders and the exploitation service of the electrical network

Perturbative evaluation of the eigenvalues of the Herbst Hamiltonian

We reconsider the well-known and long-debated problem of the calculation of the eigenvalues of the Herbst Hamiltonian 2\sqrt{p^2 +m^2} - \kappa/r. We give a formulation of the problem that allows, for the first time, a perturbative evaluation of the eigenvalues for any n and l, and in principle up to any order in \kappa via standard Kato perturbation theory. We present the evaluation of the energy of the n=1 and n=2 states up to \kappa^6, confirming the result previously obtained by Le Yaouanc et al. with a completely different technique. Moreover we give the n=2, l=1 level, which is new. Discussion of the results and comparison with previous findings are given at the end.Comment: 14 pages, Eq. (19) and (22) are corrected; as a consequence the result of Eq. (26) has changed at order alpha^

The 1P quarkonium fine splittings at NLO

We calculate the 1P heavy quarkonium fine splittings at NLO and discuss the impact of the calculation on the chi_b(1P) splittings.Comment: 10 pages, 3 figure

History of the United States Air Force Nurse Corps, 1949-1954

The Air Force Nurse Corps (AFNC) was established effective July 1, 1949, however, no history of the AFNC has been written. The purpose of this investigation was to examine the first five years of the AFNC when its initial framework, policies, and practices were established. Included in this period was the story of the AFNC response to its first great challenge of the Korean War beginning just before the corps first anniversary. The study framework consists of the four themes of (1) dedication to serve, protect, and care for soldier patients; (2) slow advance in status; (3) need for adequate nurse preparation; and (4) need for political astuteness which were found consistently in reports of military nursing. These four themes were present in varying dimensions throughout the story of the AFNC and were organized around, (1) major factors leading to the development of the AFNC; (2) difficulties and successes in the formation of the AFNC; (3) experiences of the women who served; and (4) an explanation of the status of the AFNC within the larger Air Force (AF) structure. Documentation of military activities was collected primarily from military history sources. Background and supplementary data were gathered from academic institutions, the Library of Congress, and the National Archives. Finally, interviews of AFNC nurses who served during the first five years of the corps provided invaluable insights and information regarding personal experiences. Findings of the investigation showed that the Army nurses who had transferred to the AFNC had developed an identification with the air arm of the service prior to transfer and thought of themselves as AF nurses. The theme of dedication to service was strongly defined in the early years of the AFNC exemplified by the work of the AFNC flight nurses during the Korean War. The theme of need for adequate educational preparation was also clearly demonstrated particularly in the effort to train nurses in wartime skills such as flight nursing, anesthesia, and operating room practice. The themes of political astuteness and slow advance in status were present but not obvious as the AFNC devoted its efforts to creating an effective operational structure at the same time it was coping with the demands of a major war effort. A major difficulty for the study was the minimal written documentation of AFNC activities. This led to the recommendation that a history of the corps post Korean War be accomplished as soon as possible in order to preserve the details and rationales of AFNC actions and the experiences, thoughts, and emotions of the nurses