Data Management Plans for the Photon and Neutron Communities

This paper presents the interdisciplinary work undertaken by six photon and neutron research institutes to develop a common approach and implementation to data management plans in the context of the Photon and Neutron Open Science Cloud project. The paper introduces the context of the project and then describes the approach based on the concept of active data management plans and a common template of questions. The comparison of and choice of a common tool, the Data Stewardship Wizard, is then described. Finally, the deployment of the tool and its integration in the different facilities’ data workflows is described in more detail. The paper concludes with a summary of the achievements, the lessons learned, and which issues still need to be addressed

Status Report of the DPHEP Study Group: Towards a Global Effort for Sustainable Data Preservation in High Energy Physics

Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are mostly unique. An inter-experimental study group on HEP data preservation and long-term analysis was convened as a panel of the International Committee for Future Accelerators (ICFA). The group was formed by large collider-based experiments and investigated the technical and organisational aspects of HEP data preservation. An intermediate report was released in November 2009 addressing the general issues of data preservation in HEP. This paper includes and extends the intermediate report. It provides an analysis of the research case for data preservation and a detailed description of the various projects at experiment, laboratory and international levels. In addition, the paper provides a concrete proposal for an international organisation in charge of the data management and policies in high-energy physics

Search for effective Lorentz and CPT violation using ZEUS data

Lorentz and CPT symmetry in the quark sector of the Standard Model are studied in the context of an effective field theory using ZEUS e±p data. Symmetry-violating effects can lead to time-dependent oscillations of otherwise time-independent observables, including scattering cross sections. An analysis using five years of inclusive neutral-current deep inelastic scattering events corresponding to an integrated HERA luminosity of 372 pb-1 at s=318 GeV has been performed. No evidence for oscillations in sidereal time has been observed within statistical and systematic uncertainties. Constraints, most for the first time, are placed on 42 coefficients parametrizing dominant CPT-even dimension-four and CPT-odd dimension-five spin-independent modifications to the propagation and interaction of light quarks

The ZEUS data preservation project

A project to allow long term access and physics analysis of ZEUS data (ZEUSdata preservation) has been established in collaboration with the DESY-IT group. In the ZEUSapproach the analysis model is based on the Common Ntuple project, under development since2006. The real data and all presently available Monte Carlo samples are being preserved in a atROOT ntuple format. There is ongoing work to provide the ability to simulate new, additionalMonte Carlo samples also in the future. The validation framework of such a scheme usingvirtualisation techniques is being explored. The goal is to validate the frozen ZEUS softwareagainst future changes in hardware and operating system. A cooperation between ZEUS, DESY-IT and the library was established for document digitisation and long-term preservation ofcollaboration web pages. Part of the ZEUS internal documentation has already been storedwithin the HEP documentation system INSPIRE. Existing digital documentation, needed toperform physics analysis also in the future, is being centralised and completed