The transverse-momentum spectrum of Higgs bosons near threshold at NNLO

We give next-to-next-to-leading order (NNLO) predictions for the Higgs production cross section at large transverse momentum in the threshold limit. Near the partonic threshold, all radiation is either soft or collinear to the final state jet which recoils against the Higgs boson. We find that the real emission corrections are of moderate size, but that the virtual corrections are large. We discuss the origin of these corrections and give numerical predictions for the transverse-momentum spectrum. The threshold result is matched to the known NLO result and implemented in the public code PeTeR.Comment: 17 pages, 9 Figures; v2: journal version, correction in the qg channe

Transverse-momentum spectra of electroweak bosons near threshold at NNLO

We obtain the next-to-next-to-leading order corrections to transverse-momentum spectra of W, Z and Higgs bosons near the partonic threshold. In the threshold limit, the electroweak boson recoils against a low-mass jet and all radiation is either soft, or collinear to the jet or the beam directions. We extract the virtual corrections from known results for the relevant two-loop four-point amplitudes and combine them with the soft and collinear two-loop functions as defined in Soft-Collinear Effective Theory. We have implemented these results in a public code PeTeR and present numerical results for the threshold resummed cross section of W and Z bosons at next-to-next-to-next-to-leading logarithmic accuracy, matched to next-to-leading fixed-order perturbation theory. The two-loop corrections lead to a moderate increase in the cross section and reduce the scale uncertainty by about a factor of two. The corrections are significantly larger for Higgs production.Comment: 33 pages, 3 figures; v2: journal version, correction in (73); v3: corrected qg-channel in (73

2018 Annual Report of the work in IMSA’s Archives

The IMSA Archives, housed in the Leto M. Furnas Information Resource Center, serves to collect and preserve materials relating to the history and ethos of the Illinois Mathematics and Science Academy. The Archives includes both special and general collections with materials about IMSA’s establishment, led by Dr. Leon Lederman and Governor James Thompson. There are materials about the Academy\u27s opening in the fall of 1986 and its development since, as well as about its ideas and programs and how they evolved. We have sample curricula, presidential speeches, samples of student work, as well as material about and from partnership programs for educators and schools. We have both student and institutional publications and we have a great deal of iconographic material ranging from posters to snapshots. All of the materials illuminate the lives of IMSA’s students, alumni/ae, faculty and staff on campus and out in the wide, wide world

2019 Annual Report of the work in IMSA’s Archives

The IMSA Archives, housed in the Leto M. Furnas Information Resource Center, serves to collect and preserve materials relating to the history and ethos of the Illinois Mathematics and Science Academy. The Archives includes both special and general collections with materials about IMSA’s establishment, led by Dr. Leon Lederman and Governor James Thompson. There are materials about the Academy\u27s opening in the fall of 1986 and its development since, as well as about its ideas and programs and how they evolved. We have sample curricula, presidential speeches, samples of student work, as well as material about and from partnership programs for educators and schools. We have both student and institutional publications and we have a great deal of iconographic material ranging from posters to snapshots. All of the materials illuminate the lives of IMSA’s students, alumni/ae, faculty and staff on campus and out in the wide, wide world

2017 Annual Report of the work in IMSA’s Archives

The IMSA Archives, housed in the Leto M. Furnas Information Resource Center, serves to collect and preserve materials relating to the history and ethos of the Illinois Mathematics and Science Academy and the activities of its students, faculty and staff. Our collection includes materials about IMSA’s establishment, led by Dr. Leon Lederman and Governor James Thompson; the Academy\u27s development since 1986; its ideas and programs; partnership programs for educators and schools state- and nationwide; and the lives of its students, alumni, and staff

2016 Annual Report of the work in IMSA’s Archives

This year the focus of the Archives has been on further developing several collections and making them available on Digital Commons [DC], work that has been made possible by the expertise and creativity of Jean Bigger and her work on DC. In addition work has continued to strengthen collections in general, to build new collections, and to make the Archives more accessible to administration, students, faculty, staff, students, and alumni, as well as to others in Illinois, USA and the world. To that end the volunteer staff set four sets of goals for the year, which are set out below along with an assessment of accomplishments and a look to the future

Simplified placement and management of cutting setons in the treatment of transsphincteric anal fistula: technical note

Background: We report one safe and standardized technique of seton placement and management. Conclusions: A simplified way to manage cutting setons helps to minimize manipulation and may reduce pain. In most patients our technique can be used with no additional anesthesia and in an outpatient settin