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The second recipe below works for ROOT version 5.16 but not for 5.18. Please see this Root Talk discussion for a method that works with 5.18. http://root.cern.ch/phpBB2/viewtopic.php?t=4857&highlight=tfileinfo+createlist^{Image Removed}
in particular the response posted by user ganis on Wed Jan 23, 2008 13:04

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Here is a technique as described in ROOT-talk (http://root.cern.ch/phpBB2/viewtopic.php?t=4857&highlight=&sid=621b9582641b9fcb3f9c4af806442fb5^{Image Removed}).

1. Create a file containing a list of desired xrootd files.

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root [0] TChain *c = new TChain("MeritTuple") 
root [1] TList *filelist = TFileInfo::CreateList("filelist.txt") 
root [2] c.AddFileInfoList(filelist)   
(Int_t)(1)
root [3] delete filelist

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The "root \ [1\]" line must refer to the file created in the previous step, including a full file path if it is not in your current working directory.

Voila!

3. Now you can work with the TChain as expected, e.g.,

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