Multi-parameter fits to the tt̄ threshold observables at a future e+e- linear collider

M. Martinez, R. Miquel

    Research output: Contribution to journalArticleResearchpeer-review

    102 Citations (Scopus)

    Abstract

    A realistic study of the physics reach of a tt̄ threshold scan at a future ep+e- linear collider is presented. The results obtained take into account experimental and, to a large extent, theoretical systematic errors, as well as beam effects. Because of the large correlations between the physical parameters that can be extracted from the threshold scan, a multi-parameter fit is seen as mandatory. It is shown that the top mass, the top width and αs,(Mz) can be extracted simultaneously with uncertainties around 20 MeV, 30 MeV and 0.0012, respectively, while the top Yukawa coupling can be measured, with the previous three parameters, to an uncertainty of about 35%, after assuming an external prior on αs of ±0.001.
    Original languageEnglish
    Pages (from-to)49-55
    JournalEuropean Physical Journal C
    Volume27
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2003

    Fingerprint Dive into the research topics of 'Multi-parameter fits to the tt̄ threshold observables at a future e<sup>+</sup>e<sup>-</sup> linear collider'. Together they form a unique fingerprint.

    Cite this