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Top pair invariant mass distribution: A Window on new physics

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Frederix, Rikkert [UCL] Maltoni, Fabio [UCL]

(eng) We explore in detail the physics potential of a measurement of the ttbar invariant mass distribution. First, we assess the accuracy of the best available predictions for this observable and find that in the low invariant mass region, the shape is very well predicted and could be used to perform a top mass measurement. Second, we study the effects of a heavy s-channel resonance on the ttbar invariant mass distribution, in a model independent way. We provide the necessary Monte Carlo tools to perform the search and outline a simple three-step analysis. Comment: 32 pages, 18 figures; Improvements on the section about the top quark mass dependence, including one more figure

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2009
Journal information "JHEP" - Vol. 0901, p. 047 (2009)
Peer reviewed yes
issn 1126-6708
Publication status Publié
Affiliation UCL - SC/PHYS - Département de physique
Keywords High Energy Physics - Phenomenology
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Bibliographic reference Frederix, Rikkert ; Maltoni, Fabio. Top pair invariant mass distribution: A Window on new physics. In: JHEP, Vol. 0901, p. 047 (2009)
Permanent URL http://hdl.handle.net/2078/31108