1 / 7

Real p T D 0

Real p T D 0. J. Bouchet. input. Generate a p T distribution with a power law function : d 2 N/dp T dy = A[1 +p T /p0] n with <p T > = 2p0/(n-3) for a better extrapolation at p T  0 Ref : Manuel Calderon (thesis)

dale
Download Presentation

Real p T D 0

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Real pT D0 J. Bouchet

  2. input • Generate a pT distribution with a power law function : d2N/dpTdy = A[1 +pT/p0]n with <pT> = 2p0/(n-3) for a better extrapolation at pT0 Ref : • Manuel Calderon (thesis) • Transverse momentum spectra of charged particle in ppbar collisions at sqrt(s) = 630 GeV Phys. Letter B 366(1996)434-440 • Pick randomly values in this distribution • changing n from 10 to 14 does not really modify the shape (which is what we want) of the pT distribution • So I chose n=10, <pT>=1 GeV/c

  3. check Generated function • Values (here 10kevents) • Randomly picked • Mean <pT> is 1

  4. Next step • Run the bfc chain with geometry y2007g • Use the slow simulator • Library : SL08f • Vertex fix : x =0.01cm ;y= 0.02 cm;z=0.4 cm (values chosen arbitrarily to avoid vertex = (0,0,0)) • D0 phase space : • 0 < pT < 5 GeV/C power law • -1 < y< 1 flat • 0 < phi < 6.28 flat Check the result from starsim : if D0 in fz file is correct

  5. Check fz file (i)

  6. Check fz file (ii) • distributions look as expected

  7. Check the MuDst file • after running the reconstruction, I have run MuKpi and checked the result • pT and the rapidity of reconstructed D0 look as the input All combinations K-π+ All combinations K-π+

More Related