1 / 10

NA48 the CERN Kaon facility

Fixed target experiment with 400-450 GeV protons from SPS. NA48 the CERN Kaon facility. NA48: CP violation. K e3 Charge Asymmetry. K L → p + p - e + e - decay A f L = (14.2 ± 3.0 stat ± 1.9 sys )%. NA48: rare decays. 1997 data (7000 events):

ponce
Télécharger la présentation

NA48 the CERN Kaon facility

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. Fixed target experiment with 400-450 GeV protons from SPS NA48the CERN Kaon facility

  2. NA48: CP violation Ke3 Charge Asymmetry KL→p+p-e+e- decay AfL = (14.2 ± 3.0stat ± 1.9sys)%

  3. NA48: rare decays 1997 data (7000 events): BR(KL→e+e-g) = (1.06±0.02stat±0.02syst±0.04norm)×10-5 Meeg KL→e+e-g BR(KL→e+e-e+e-) = (3.30±0.24stat±0.14syst±0.10norm)×10-8 X= Mee2 / MK2 KL→e+e-e+e- In the BMS model: aK* measure the relative strenght of intermediate pseudoscalar and vector meson contribution 1998-1999-2001 (600000 events) aK* = -0.207 ± 0.019 ± 0.017 BR(KL→gg) / BR(KL→3p0) = (2.81±0.01stat±0.02syst)×10-3 BR(KL→p0gg) = (1.36 ±0.03stat±0.03syst±0.03norm) x 10-6

  4. NA48: Vus

  5. NA48/1 6 events found in the signal region with a background of 0.22+0.19-0.12

  6. NA48/2: cusp effect

  7. NA48/2: “Neutral Asymmetry”

  8. NA48/2: “Charged Asymmetry”

  9. NA48/2: Vus Vus x f+(0)

  10. NA48/2: Ke2/Km2

More Related