Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-16
JHEP 1108:055,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pp., 8 figures, references added
Scientific paper
10.1007/JHEP08(2011)055
We ask what new states may lie at or below the TeV scale, with sizable flavour-dependent couplings to light quarks, putting them within reach of hadron colliders via resonant production, or in association with Standard Model states. In particular, we focus on the compatibility of such states with stringent flavour-changing neutral current and electric-dipole moment constraints. We argue that the broadest and most theoretically plausible flavour structure of the new couplings is that they are hierarchical, as are Standard Model Yukawa couplings, although the hierarchical pattern may well be different. We point out that, without the need for any more elaborate or restrictive structure, new scalars with "diquark" couplings to standard quarks are particularly immune to existing constraints, and that such scalars may arise within a variety of theoretical paradigms. In particular, there can be substantial couplings to a pair of light quarks or to one light and one heavy quark. For example, the latter possibility may provide a flavour-safe interpretation of the asymmetry in top quark production observed at the Tevatron. We thereby motivate searches for diquark scalars at the Tevatron and LHC, and argue that their discovery represents one of our best chances for new insight into the Flavour Puzzle of the Standard Model.
Giudice Gian Francesco
Gripaios Ben
Sundrum Raman
No associations
LandOfFree
Flavourful Production at Hadron Colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Flavourful Production at Hadron Colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flavourful Production at Hadron Colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-77999