31 5 07 Sommersemester 2007 2 CP-Verletzung

31. 5. 07 Sommersemester 2007

2. CP-Verletzung Hartmut Abele, University of Heidelberg 2

3. Symmetries and the World according to Escher Hartmut Abele, University of Heidelberg 3

BABAR 2001 Hartmut Abele, University of Heidelberg 4

3. Prinzip: CP-Verletzung Hartmut Abele, University of Heidelberg S. Paul, TUM 5

ILL: the EDM experiment Hartmut Abele, University of Heidelberg 6

Final Sussex-RAL-ILL result Hartmut Abele, University of Heidelberg 7

EDM: PSI F overall = 100 Hartmut Abele, University of Heidelberg 8

EDM The PNPI experiment Hartmut Abele, University of Heidelberg 9

Improvements Mainly performed by the group at PNPI (V. Lobashev et al. ): official collaboration agreement with TUM Hartmut Abele, University of Heidelberg 10

Überblick zur die Sensitivität von Neutronexperimenten Hartmut Abele, University of Heidelberg 11

EDM Strong CP problem Axion als pseudoskalares Teilchen Hartmut Abele, University of Heidelberg 12

Axion limits 2007 PVLAS Baeßler et al. Westphal, Baeßler, H. A. ar. Xiv: hep-ph/0703108 UCN other limits Hartmut Abele, University of Heidelberg 13

2. Prinzip: Mischung der Quarks Quarkmischung ist Rotation im Flavour-Raum (Null-Summe) CKM-Matrix ist unitär! Hartmut Abele, University of Heidelberg 14

Unitarity Check: The Quark Mixing CKM Matrix Parametrization: 3 angles, and a phase Hartmut Abele, University of Heidelberg 15

Unitarity Check II: Hartmut Abele, University of Heidelberg 16

Unitarity Check II dsf From A. Buras, Munich Hartmut Abele, University of Heidelberg 17

Unitarity check Hartmut Abele, University of Heidelberg 18

Situation 1995 - 2004 Hartmut Abele, University of Heidelberg 19

The PDG feels it has the right to redefine anything it wants 1994: The “centimeters” on the ruler on p. 227 of the booklet are 0. 97 cm long, because: Is there a general decline of standards? a) The booklet were returned from the printer at 0. 25 times the speed of light a) A theorist is in charge of the PDG b) The PDG feels it has the right to redefine anything it wants c) There is a general decline of standards d) There was an international conspiracy e) It was a congressionally mandated cost-saving measure f) PDG gives you more cm/inch than anyone else Hartmut Abele, University of Heidelberg 20

Vus = 0. 2196 ± 0. 0017 exp ± 0. 0018 th = 0. 2196 ± 0. 0026 (PDG 2002) Hartmut Abele, University of Heidelberg 21

Some news in 2005: Vus b Hartmut Abele, University of Heidelberg 22

CKM unitarity summary Phase of consolidation Achievements: - New K results - New A result - Halving of theoretical error in radiative corrections Continue to measure lifetime and correlation coefficients until limited by theory Lifetime Formfactors Hartmut Abele, University of Heidelberg 23

Neutronlebensdauer ~ 99. 99 %elastische Reflexion ~ 0. 01% inelastische Reflexion in me. V-Bereich ~ 0. 001% Absorption TUM: magnetische Speicherung: keine Verluste Hartmut Abele, University of Heidelberg TUM 24

2 values 878. 5 ± 0. 8 sec Serebrov et al. 885. 7 ± 0. 7 sec PDG 2005 Hartmut Abele, University of Heidelberg 25

Neutrons and Big Bang Nucleo Synthesis Hartmut Abele, University of Heidelberg 26

In more detail Neutron lifetime PDG 2006 Yp= 0. 2479(6) Serebrov et al. 2005 Yp= 0. 2463(6) astro-ph/0408523 v 2 Hartmut Abele, University of Heidelberg 27