167 research outputs found
Virtual Photon Structure from Jet Production at HERA
The feasibility of measuring parton distribution functions of of virtual
photons via the jet production at HERA is investigated.Comment: Contribution to the Workshop on "Future Physics at HERA", eds. G.
Ingelman, A. De Roeck, R. Klanner,4 pages, 3 figures, epsfi
QCD Analysis of Dijet Production at Low {\boldmath } at HERA
Recent H1 data on triple differential dijet cross sections in
interactions in the region of low photon virtualities are shown to be in
reasonable agreement with the predictions of the NLO QCD calculations obtained
using the program NLOJET++. The implications of this observation for the
phenomenological relevance of the concept of resolved virtual photon are
discussed.Comment: 5 pages, 3 figure
New ADS Functionality for the Curator
In this paper we provide an update concerning the operations of the NASA
Astrophysics Data System (ADS), its services and user interface, and the
content currently indexed in its database. As the primary information system
used by researchers in Astronomy, the ADS aims to provide a comprehensive index
of all scholarly resources appearing in the literature. With the current effort
in our community to support data and software citations, we discuss what steps
the ADS is taking to provide the needed infrastructure in collaboration with
publishers and data providers. A new API provides access to the ADS search
interface, metrics, and libraries allowing users to programmatically automate
discovery and curation tasks. The new ADS interface supports a greater
integration of content and services with a variety of partners, including ORCID
claiming, indexing of SIMBAD objects, and article graphics from a variety of
publishers. Finally, we highlight how librarians can facilitate the ingest of
gray literature that they curate into our system.Comment: Submitted to the Proceedings of Library and Information Services in
Astronomy VIII, Strasbourg, Franc
Renormalization scheme dependence in e+e- annihilation and [tau]-lepton decay at the next-to-next-to-leading order of perturbative QCD
We present a detailed investigation of the renormalization scheme dependence of the next-to-next-to-leading order QCD predictions for the processes e+e--->hadrons and [tau]-->[nu][tau]+hadrons. Based on it the comparison of the results obtained in three frequently used approaches to resolving the renormalization scheme ambiguities with experimental data is carried out.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/29133/1/0000172.pd
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