1 / 8

in 900 GeV collision data

in 900 GeV collision data. Ehud Duchovni Ofir Gabizon. Selection of candidates. Each candidate is required to satisfy:. The invariant mass of the two tracks, treated as massless is required to satisfy:. (to remove conversions).

sadie
Télécharger la présentation

in 900 GeV collision data

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. in 900 GeV collision data Ehud Duchovni Ofir Gabizon

  2. Selection of candidates Each candidate is required to satisfy: The invariant mass of the two tracks, treated as massless is required to satisfy: (to remove conversions) For all plots except mass reconstruction, The invariant mass of the two tracks, treated as pions is required to satisfy

  3. Reconstruction of mass • The mass distribution of candidates fitted to a single Gaussian:

  4. The mass distribution of candidates fitted to a double Gaussian:

  5. decay distance and distributions

  6. Reconstruction efficiencies from MC simulation

  7. Attempt to measure efficiencies from data • It was thought that the reconstruction efficiency might be obtainable from the measured decay distance and distributions without MC input by using the known lifetime distribution. • This set of equations describes the relationship between the distributions after binning: • Without further assumptions there is variables and equations. One must make further assumptions to be able to solve these equations • However, since the reconstruction efficiency is a strong function of the parameters this is problematic

  8. Prospects • Seeking new approaches for measuring the reconstruction efficiency from data

More Related