Top quark polarization as a probe of models with extra gauge bosons

Edmond L. Berger, Qing Hong Cao, Chuan Ren Chen, Hao Zhang

研究成果: 雜誌貢獻文章

23 引文 斯高帕斯(Scopus)

摘要

New heavy gauge bosons exist in many models of new physics beyond the standard model of particle physics. Discovery of these W and Z resonances and the establishment of their spins, couplings, and other quantum numbers would shed light on the gauge structure of the new physics. The measurement of the polarization of the SM fermions from the gauge boson decays would decipher the handedness of the coupling of the new states, an important relic of the primordial new physics symmetry. Since the top quark decays promptly, its decay preserves spin information. We show how decays of new gauge bosons into third generation fermions (W→tb, Z→tt̄) can be used to determine the handedness of the couplings of the new states and to discriminate among various new physics models.

原文英語
文章編號114026
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
83
發行號11
DOIs
出版狀態已發佈 - 2011 六月 13

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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