The LHCb Ntupling Service¶

Welcome to the LHCb Ntupling Service Documentation!

The LHCb Ntupling Service is a fully functional system integrating the LHCb Ntuple Wizard application (Comput.Softw.Big Sci. 7 (2023) 1, 6) with the CERN Open Data Portal and the Worldwide LHC Computing Grid (WLCG), allowing users to interface with LHCb open data. Users can generate a query by following steps laid out in this tutorial, which will be processed by the LHCb Open Data team, and if accepted, ultimately will result in Ntuples delivered to the CERN Open Data Portal. The service is hosted on the Open Data Portal with the landing page shown in the screenshot below. The procedure to formulate a query of the LHCb data can be initiated by clicking the green "Create new request" button.

Create request

It is recommended to use the Ntuple Wizard in a computer browser rather than on a mobile phone, as there is important contextual information displayed in mouseover tooltips that may not be accessible on mobile devices.