Outputs (6)

Less space for a new family of fermions. (2010)
Journal Article
Eberhardt, O., Lenz, A., & Rohrwild, J. (2010). Less space for a new family of fermions. Physical Review D, 82(9), Article 095006. https://doi.org/10.1103/physrevd.82.095006

We investigate the experimentally allowed parameter space of an extension of the standard model (SM3) by one additional family of fermions. Therefore we extend our previous study of the Cabibbo-Kobayashi-Maskawa (CKM)–like mixing constraints of a fou... Read More about Less space for a new family of fermions..

Large loop effects of extra SUSY Higgs doublets to CP violation in B^0 mixing. (2010)
Journal Article
Kubo, J., & Lenz, A. (2010). doublets to CP violation in B^0 mixing. Physical Review D, 82(7), https://doi.org/10.1103/physrevd.82.075001

We consider more than one pair of SU(2)L doublet Higgs supermultiplets in a generic supersymmetric extension of the standard model, and calculate their one-loop contributions to the soft mass insertions δLL etc. We find that, if large supersymmetry b... Read More about Large loop effects of extra SUSY Higgs doublets to CP violation in B^0 mixing..

SuperB Progress Reports - Physics (2010)
Preprint / Working Paper
O'Leary, B., & others. (online). SuperB Progress Reports - Physics

SuperB is a high luminosity e+e- collider that will be able to indirectly probe new physics at energy scales far beyond the reach of any man made accelerator planned or in existence. Just as detailed understanding of the Standard Model of particle ph... Read More about SuperB Progress Reports - Physics.

How large can the SM contribution to CP violation in D0 − D0 mixing be? (2010)
Journal Article
Bobrowski, M., Lenz, A., Riedl, J., & Rohrwild, J. (2010). How large can the SM contribution to CP violation in D0 − D0 mixing be?. Journal of High Energy Physics, 2010(03), https://doi.org/10.1007/jhep03%282010%29009

We reconsider the leading HQE contributions to the absorptive part of the mixing amplitude of neutral D mesons by taking also α s corrections and subleading 1/m c corrections into account. We show that these contributions to Γ12 do not vanish in the... Read More about How large can the SM contribution to CP violation in D0 − D0 mixing be?.

Charm mixing in the Standard Model (2010)
Presentation / Conference Contribution
Bobrowski, M., & Lenz, A. (2010, December). Charm mixing in the Standard Model

In this talk we report on a study on the mixing of neutral charmed mesons and argue that, at the present stage, a CP violating weak phase of the order of some per mille can not be excluded in the Standard Model. It is shown how some, seemingly reason... Read More about Charm mixing in the Standard Model.

Constraints on fourth generation Majorana neutrinos (2010)
Presentation / Conference Contribution
Lenz, A., Pas, H., & Schalla, D. (2010, December). Constraints on fourth generation Majorana neutrinos

We investigate the possibility of a fourth sequential generation in the lepton sector. Assuming neutrinos to be Majorana particles and starting from a recent - albeit weak - evidence for a non-zero admixture of a fourth generation neutrino from fits... Read More about Constraints on fourth generation Majorana neutrinos.