A collaborative resource for data curation, validation and simulation

现代高能粒子物理实验数据的成功解释是一个复杂的过程，不仅涉及数据点本身的实际测量，而且还涉及各种理论或唯象模型和过程的输入。位于达勒姆的粒子物理现象学研究所（IPPP）以其强大的现象学基础非常适合解决这一需求，本资助申请中提出的项目以三种相关的方式做到这一点：（1）数据管理。HEPDATA项目将继续汇编来自世界各地粒子物理实验的HEP实验散射数据和相关书目信息，并将其免费提供给整个物理学界，从而不仅使数据易于获取，而且还将数据推广给广大受众。它还将继续托管SLAC/SPIRES数据库的英国镜像，以及伯克利PDG网页，所有这些都被HEP研究计划大量使用。HEPDATA还将继续为Parton分布函数（PDF）代码提供服务器，并继续开发和维护LHAPDF新的PDF函数库，用于未来的分析，包括LHC。(2)数据比较/验证。达勒姆小组将继续与UCL合作，开展上一轮PPARC E-science资助的CEDAR项目，该项目将HEPDATA的数据直接与JETWEB程序相结合，该程序将数据分布与蒙特卡洛（MC）生成器的输出进行比较，该程序用于模拟探测器中的物理学。因此，CEDAR将允许MC发生器的参数容易地调整，以适应尽可能广泛的数据集，从而使预测更可靠。(3)数据模拟。HERWIG是将用于LHC分析的关键蒙特卡罗发生器之一。目前，达勒姆的一大部分全球专业人员正在通过GridPP应用程序接口线对大型强子对撞机分析所需的C++（Herwig++）中的HERWIG进行新的重写。建议继续进行这一开发，并提供必要的支持和开发，使HERWIG成为实验计划的核心分析工具。

The successful interpretation of data from modern high energy particle physics experiments is a complex process involving not only the actual measurement of data points themselves but also the input of a variety of theoretical or phenomenological models and processes. The Institute for Particle Physics Phenomenology (IPPP) in Durham, with its strong phenomenolgical base is ideally suited to address this need and the projects proposed in this grant application serve to do this in three related ways: (1) Data Curation. The HEPDATA project will continue to compile HEP Experimental scattering data and associated bibliographic information from particle physics experiments around the world and make these freely available to the entire physics community, thus not only making data easily accessible but also promoting the data to a wide audience. It will also continue to host the UK mirror of the SLAC/SPIRES databases and also the Berkeley PDG web pages all of which are heavily used by the HEP research program. HEPDATA will also continue to provide a server for Parton Distribution Function (PDF) codes and also to continue to develop and maintain LHAPDF the new library of PDF funtions for use in future analyses, including the LHC. (2) Data Comparison/Validation. The Durham group will continue to collaborate with UCL on the CEDAR project funded in the last PPARC E-science round, which combines the data from HEPDATA directly with the JETWEB program which compares the data distributions with the output from Monte Carlo (MC) generators, the programs used to simulate the physics in the detectors. CEDAR will thus allow the parameters of the MC generators to be easily adjusted to fit as wide a range of data sets as possible hence making the predictions more reliable. (3) Data Simulation. HERWIG is one of the key Monte Carlo generators which will be used in the LHC analyses. A large fraction of the worldwide expertise is now at Durham working through the GridPP Applications Interface line on the new re-write of HERWIG in C++ (Herwig++) needed for the LHC analyses. It is proposed to continue this development and also the essential support and development needed in the longer term to make HERWIG a core analysis tool for the experimental progamme.