MITP Workshop on T violation and CPT tests in neutral-meson systems

15 Apr 2013, 09:30 → 16 Apr 2013, 16:30 Europe/Berlin

Seminarraum 2 (foyer area) (Institut für Kernphysik, Uni Mainz)

Achim Denig (Univ. Mainz), Klaus Schubert

The systems of neutral K and B mesons show various CP-symmetry breaking effects. Since the discovery of CP violation, experiments have studied the question if these effects are also T- or/and CPT-symmetry breaking; quantum mechanics does not forbid CPT violation. T violation has been claimed in many analyses of experimental data between 1970 and 2012, and no violation of CPT symmetry has been established. Since some cases have been discussed where an apparent T violation can be faked by final-state interactions or even by CPT violation, the workshop will critically review the most sensitive experiments, with participation from theory and from experiments (CPLEAR, KLOE, BABAR). The main discussion points: How sensitive are the CPT tests at present and what progress can we expect from experiments in the near future?

Slides

• Barnabeu.pdf
• bevan_mainz.pdf
• DAmbrosio.pdf
• DiDomenico.pdf
• Gerber.pps
• LiGioi.pdf
• Ruf.pdf
• Schubert.pdf
• Villanueva.pdf

Summary T_CPT-summaryV2.pdf

Monday, 15 April

Welcome, Matthias Neubert

Convener: Matthias Neubert

1 Klaus Schubert, Introduction

Discussion

2 Thomas Ruf, T and CPT studies with CPLEAR

Discussion

11:30 Coffee Break

3 Giancarlo D'Ambrosio, Bell-Steinberger analysis at KLOE

Discussion

13:00 Lunch

4 Luigi Li Gioi, T and CPT studies in B0B0bar transitions with BELLE

Discussion

5 Jose Bernabeu, Concept, Method and Result for Time Reversal Violation in Entangled B Pairs

Discussion

16:30 Tea Break

6 Hans-Jürg Gerber, Symmetries of B and K mesons, A pedegogical consideration

Discussion

7 Thomas Ruf, Parametrizations of T and CPT violation in K0 -> pi pi and K0 ->pi ell nu

Discussion

Tuesday, 16 April

8 Pablo Villanueva-Perez, Parametrizations of T and CPT violation in B0 -> c cbar K0

Discussion

9 Antonio di Domenico, Future experiments on T violation and CPT tests in the K0 system

Discussion

11:00 Coffee Break

10 Adrian Bevan, Future experiments on T violation and CPT tests in the B0 (and D0 ?) system(s)

Discussion

11 Preliminary Conclusions

Discussion on a written Summary

13:00 Lunch

Continued Discussion on remaining issues