K e 4 decays and Wigner cusp Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

Searches for Permanent Electric Dipole Moments Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

Ja n 20 07 Rare K Decays Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

Here we give a brief description of the KTeV experiment [1] [2] . There were two configurations, E832 and E799, shown respectively in Fig. 1 and Fig. 2. . E832 was designed primarily to measure the direct CP violation parameter ǫ/ǫ, while E799 was devoted to rare KL decays. Two KL beams were generated by 800 GeV/c protons on a target. In E832 a regenerator in one of the beams converted KL to KS...

02 02 2 v 1 1 2 Fe b 20 07 Semileptonic b to u transition Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

The parameter |Vub| is one of the smallest and least known elements of the CabibboKobayashi-Maskawa (CKM) quark-mixing matrix. A precise determination of |Vub| would significantly improve the constraints on the unitarity triangle and provide a stringent test of the Standard Model mechanism for CP violation. With the CKM angle φ3, |Vub| can constrain the unitarity triangle from tree level proces...

Fe b 20 07 NRQCD and Quarkonia Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

Quarkonia play an important role in several high energy experiments. The diversity, quantity and accuracy of the data still under analysis and currently being collected is impressive and includes: data on quarkonium formation from BES at the Beijing Electron Positron Collider (BEPC), E835 at Fermilab, and CLEO at the Cornell Electron Storage Ring (CESR); clean samples of charmonia produced in B...

01 02 7 v 1 1 5 Ja n 20 07 Charm and beauty structure of the proton Contribution to the proceedings of HQL 06 , Munich , October 16 th - 20 th 2006

Heavy quarks production is an important testing ground for quantum chromodynamics (QCD), because QCD calculations are expected to be reliable if a hard scale is present in the process. In heavy quarks production a hard scale is provided by the quark mass. Moreover heavy quarks production can give direct access to the gluon density in the proton due to the fact that it proceeds, in QCD, almost e...