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pT Spectra

pT Spectra. Jaiby Joseph 04/18/2011. Method . Signal (1.82 < Mass < 1.92). Bkg_Right 1.94 ≤ Mass < 1.99. Bkg_Left 1.75 < Mass ≤ 1.8. Subtract the background pT distribution (Sum of left and right) from the signal pT distribution in the above shown ranges.

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pT Spectra

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  1. pT Spectra Jaiby Joseph 04/18/2011

  2. Method Signal (1.82 < Mass < 1.92) Bkg_Right 1.94 ≤ Mass < 1.99 Bkg_Left 1.75 < Mass ≤ 1.8 • Subtract the background pT distribution (Sum of left and right) from the signal pT distribution in the above shown ranges. • Normalize the background using the Background fitted function in the signal region

  3. pT distribution of D0+D0bar No normalization of B (d2N/dpTdy) Vs pT (d2N/dpTdy) Vs pT Linear scale Log scale 1/pT(d2N/dpTdy) Vs pT 1/pT(d2N/dpTdy) Vs pT Linear scale Log scale

  4. No normalization of B

  5. pT spectra with B normalization Normalization: To do the normalization a) Count the number of entries under the B fit function from 1.82-1.92 b) Get the histogram counts from 5 bins on Left+Right (1.75-1.8)+(1.94-1.99) c) Normalize the background pT distribution histo with (a/b) 0-10% I get 5095171 counts from the summed pT distribution of Left+Right of D0+D0bar I get 5227370 counts under the B fit function in the Inv Mass peak region of D0+D0bar Normalize (1) with (2). MinBias I get 8652207 counts from the summed pT distribution of Left+Right of D0+D0bar I get 8873550 counts under the B fit function in the Inv Mass peak region of D0+D0bar Normalize (1) with (2).

  6. UnweighedpT Spectra of 0-10% Before B normalization B Normalized

  7. Weighed pT Spectra of 0-10% After B Normalization Before B Normalization

  8. UnweighedpT Spectra of MB Before B Normalization After B Normalization

  9. Weighed pT Spectra of MB After B Normalization Before B Normalization

  10. Done with Normalized Bkg 0-10% MB

  11. Back-UP

  12. Raw Histograms of 0-10%, pT weighed spectra pT weighed 0-10% D0_bkgLeft D0_bkgRight D0bar_bkgLeft D0bar_bkgRight

  13. Continued…

  14. Subtracted (0-10%) The subtracted counts (# of entries) should be 155867

  15. Inv Mass for pT slices 0.1 < PtD0 < 0.5

  16. 0.5 < PtD0 < 0.9

  17. 0.9 < PtD0 < 1.5

  18. PtD0 > 1.5

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