Electroweak corrections to monojet production at the Tevatron and the LHC |
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Authors: | Denner Ansgar Dittmaier Stefan Kasprzik Tobias Mück Alexander |
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Institution: | 1. Dipartimento di Fisica, Università di Roma Tre, Via della Vasca Navale 84, 00146, Rome, Italy 2. INFN, Laboratori Nazionali di Frascati, Via E. Fermi 40, 00044, Frascati, Italy 3. Departament de Física Teòrica and IFIC, Universitat de València-CSIC, 46100, Burjassot, Spain 4. Theory Division, CERN, 1211, Geneva 23, Switzerland
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Abstract: | The first LHC results seem to disfavor, from the point of view of naturalness, any constrained MSSM realization with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)3 flavor symmetry. We consider this flavor symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)3 breaking are checked. The various chiral operators in ΔF=2 processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators cannot always be neglected. Finally, we also study a possible extension of the U(2)3 model compatible with the lepton sector. |
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