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Probing Ztt Couplings using Z boson polarization in ZZ production at hadron colliders
by
Dr斌 岩
(美国 Los Alamos National Laboratory)
→
Asia/Shanghai
ID：983 422 559 (腾讯会议)
ID：983 422 559
腾讯会议
Description
腾讯会议（ID：983 422 559）
摘要：We propose to utilize the polarization information of the Z bosons in ZZ production, via the gluon-gluon fusion process gg→ZZ, to probe the Ztt gauge coupling. The contribution of longitudinally polarized Z bosons is sensitive to the axial-vector component (at) of the Ztt coupling. We demonstrate that the angular distribution of the charged lepton from Z boson decays serves well for measuring the polarization of
Z bosons and the determination of at. We show that ZZ production via the gg→ZZ process complement to Ztt and tZj productions in measuring the Ztt coupling at hadron colliders.
