CP Violation in Hadronic tau Decays
Alakabha Datta, Ken Kiers, David London, Patrick J. O'Donnell, Alejandro Szynkman
Abstract
We re-examine CP violation in the Delta S = 0 decays tau -> N pi nutau (N=2,3,4). We assume that the new physics (NP) is a charged Higgs. We show that there is no NP contribution to tau -> pi pi nutau, which means that no CP violation is expected in this decay. On the other hand, NP can contribute to tau -> N pi nutau (N=3,4). These are dominated by the intermediate resonant decays tau -> omega pi nutau, tau -> rho pi nutau and tau -> a1 pi nutau. We show that the only sizeable CP-violating effects which are possible are in tau -> a1 pi nutau -> 4 pi nutau (polarization-dependent rate asymmetry) and tau -> omega pi nutau (triple-product asymmetry).
Create a lesson
Related papers
Chiral soliton lattice in inhomogeneous magnetic fields
Tomas Brauner, Ramkumar Radhakrishnan
From the November Revolution toward the Millennium
Chris Quigg
An Axial UA(1)Lμ-Lτ: UV Completion and Experimental Searches
Rundong Fang, Jinhui Guo, Ming Li et al.
Hunting long-lived doubly charged scalars at the HL-LHC
Biplob Bhattacherjee, Rituparna Ghosh, Swagata Mukherjee et al.
Enigmatic properties of Ξ(1620) and Ξ(1690)
Taísa Veloso, K. P. Khemchandani, A. Martinez Torres et al.
Exploring Z/γ-mediated heavy FCNCs at the FCC-ee
Abhik Sarkar, Subhajit Kala, Amir Subba et al.