Mainz 2014 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 6: Elektroschwache Wechselwirkung 1
T 6.3: Vortrag
Montag, 24. März 2014, 11:30–11:45, P6
A measurement of the polarization of τ leptons produced in Z decays at CMS — •Vladimir Cherepanov, Günter Flügge, Bastian Kargoll, Alexander Nehrkorn, Ian M. Nugent, Lars Perchalla, Claudia Pistone, and Achim Stahl — III. Physikalisches Institut B, RWTH Aachen University, D-52056 Aachen
Extensive measurements of the τ lepton polarization and its forward-backward asymmetry at the Z0 resonance have been performed at LEP. Today, the LHC provides the opportunity for testing the Standard Model of electroweak interactions with τ leptons through a measurement of their forward-backward asymmetry and their polarization. The additional challenges at the LHC are the huge QCD background and the unknown τ lepton energy. First results on the τ lepton polarization at CMS using the Z0→τµτ3π final state are presented.