Precision Calculations of B-Meson Decays as a Test of the Standard Model

• Applicant: Dr. Sascha Turczyk
• Subject Area: Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
• Term: from 2011 to 2013
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 199706233

With the upcoming new experiments: LHC(b) and the super flavor factories, the experimental data becomes better and better. On the one hand the luminosity is strongly increased, improving the statistics. On the other side the detectors and analytical methods are developing. In order that all these improvements lead to more precise determinations from Standard Model parameters, we have to make according progress in theory. In most observables the error stemming from theoretical calculations is at the same level or even worse than the experimental one[*] The aim is to test the Standard Model against precise data and to search in case of possible inconsistencies for new physics contribution beyond the Standard Model in all relevant areas of quark flavour physics.[*] Furthermore improvements in effective theories is a goal, especially in the vicinity of non-leptonic decays.[*] These methods should then be used, to compute higher orders in the context of the Standard Model.[*] Furthermore we can use the computations of new physics contribution, for example in the context of Minimal Flavour Violation (MFV), in order to find deviations.[*] Practical applications are given by semileptonic b u decays, rare b s transitions and the extraction of shape-functions.[*] Preparing works in my own publications, where I have learned, extended and use the above mentioned tools:[1] Dassinger, Mannel, Turczyk, JHEP 0703:087,2007[2] Dassinger, Feldmann, Mannel, Turczyk JHEP 0710:039,2007[3] Breidenbach, Feldmann, Mannel, Turczyk, Phys.Rev.D78:014022,2008[4] Turczyk, Nucl. Phys. B, Proc. Suppl. 189 (2009)[5] Bigi, Mannel, Turczyk, Uraltsev, JHEP 1004:073,2010

• DFG Programme: Research Fellowships
• International Connection: USA
• Host: Professor Dr. Christian Bauer