Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-06-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 9 figures. References added, typos corrected, published version
Scientific paper
Understanding and identifying ditau jets -- jets consisting of pairs of tau particles, can be of crucial importance and may even turn out to be a necessity if the Higgs boson decays dominantly to new light scalars which, on the other hand, decay to tau pairs. As often seen in various models of BSM such as in the NMSSM, Higgs portals etc., the lightness of these new states ensures their large transverse momenta and, as a consequence, the collinearity of their decay products. We show that the non-standard signatures of these objects, which can easily be missed by standard analysis techniques, can be superbly exploited in an analysis based on subjet observables. When combined with additional selection strategies, this analysis can even facilitate an early discovery of the Higgs boson. To be specific, a light Higgs can be found with $S/\sqrt{B} \gtrsim 5$ from $\mathcal {L} \simeq 12 fb^{-1}$ of data. We combine all these observables into a single discriminating likelihood that can be employed toward the construction of a realistic and standalone ditau tagger.
Englert Christoph
Roy Tuhin S.
Spannowsky Michael
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