1 / 9

Radphi experiment

Radphi experiment. Major data-taking run summer 2000. photon beam energy: 4.3-5.3 GeV electron beam energy: 5.56 GeV electron beam current: 80 m A. integrated luminosity: 100 pb -1 total f mesons from g ,p: 60 M. 2 g invariant-mass spectra. 3 g invariant-mass spectra.

odin
Télécharger la présentation

Radphi experiment

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. Radphi experiment Major data-taking run summer 2000 photon beam energy: 4.3-5.3 GeV electron beam energy: 5.56 GeV electron beam current: 80 mA integrated luminosity: 100 pb-1 total f mesons from g,p: 60 M

  2. 2g invariant-mass spectra

  3. 3g invariant-mass spectra Total sample: ~1 M w(782) Total sample: ~20 K f(1020)

  4. Experimental results from VEPP-2M • 2 experiments: • SND • CMD-2 • 2001: • combined total of 90 M events analyzed

  5. continued: results from VEPP-2M = =

  6. Experiment: results from DAFNE • 1 experiment: • KLOE • 2001: • results shown for 50 M events analyzed

  7. continued: results from DAFNE = =

  8. Effective field theory Oset et.al . (2000): + - K K loops Evaluation: threshold dynamics Uses only leading-order XPT interactions q -1 q Unitarization leads to expansion of T instead of T q Coefficients come from fits to 2-pseudoscalar elastic scattering data q Dominant contributions come from imaginary part of Some phases remain ambiguous q

  9. Oset et.al . (2000) Evaluation: threshold dynamics

More Related