Abstract
We explore the potential of current web applications to create online interfaces that allow the visualization, interaction and real cut-based physics analysis and monitoring of processes through a web browser. The project consists in the initial development of web- based and cloud computing services to allow students and researchers to perform fast and very useful cut-based analysis on a browser, reading and using real data and official Monte- Carlo simulations stored in ATLAS computing facilities. Several tools are considered: ROOT, JavaScript and HTML. Our study case is the current cut-based H → ZZ → llqq analysis of the ATLAS experiment. Preliminary but satisfactory results have been obtained online.
Highlights
The cut-optimization procedure is a very time-consuming process during the development of a physics analysis
Request of input files The client asks for input files using a menu and/or inserting a string
This request is sent to the server which looks for the files in its internal storage or on the GRID using https protocols
Summary
The cut-optimization procedure is a very time-consuming process during the development of a physics analysis. In order to show the advantages of our online tools, and the possibility to use them for a real analysis, we took Monte-Carlo (MC) samples for the Higgs[2] decay H → ZZ → llqq and Standard Model background processes and applied a simplified version of cuts from H → ZZ → llqq analysis[3] of the ATLAS[4] Experiment using a website form. In this exercise, the numbers of remaining events after each cut are very close to those from the official analysis (see Table 1). Together with commercial analytical services (i.e. provided by Google[6]) can be used not to produce a final paper plot, but to create a faster way to exchange ideas, tutorials, classes and real useful information for the ATLAS analyses for the data taking at LHC, so-called Run 2, where one of the aspects to take in consideration is the huge amount of data, analyses, tunings and techniques to put under review and test for the coming years
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