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VUB-RECOIL November 2002
Subject:
pstar spectrum on data
From:
Daniele del Re <[log in to unmask]>
Date:
21 Nov 2002 16:14:46 -0800 (PST)Thu, 21 Nov 2002 16:14:46 -0800 (PST)
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Hi all, these are the plots for the pstar spectrum for b->ulnu events on data. A cut on Mx<1.55 Gev is applied. all http://www.slac.stanford.edu/~daniele/vub/pstar/datafixacc_pcms1.0leptonspectrum.eps b0 http://www.slac.stanford.edu/~daniele/vub/pstar/datafixB0acc_pcms1.0leptonspectrum.eps bch http://www.slac.stanford.edu/~daniele/vub/pstar/datafixBchacc_pcms1.0leptonspectrum.eps ele http://www.slac.stanford.edu/~daniele/vub/pstar/datafixeleacc_pcms1.0leptonspectrum.eps mu http://www.slac.stanford.edu/~daniele/vub/pstar/datafixmuacc_pcms1.0leptonspectrum.eps My general comment is that the spectrum seems to be softer than expected for all subsamples. For instance compare with the result on generic MC. http://www.slac.stanford.edu/~daniele/vub/pstar/tttleptonspectrum.eps This could be the reason why the the fitted value goes down once the cut on the pstar cut is tightened. Daniele
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