Fermi National Laboratory

Tevatron New Phenomena & Higgs Working Group


Combined CDF and DØ Constraints on Models for the Higgs Boson with Exotic Spin and Parity

September 2014

We combine the results from the CDF and DØ tests of models of the Higgs boson with exotic spin and parity. The data set analyzed by the CDF and DØ Collaborations corresponds to approximately 10 fb-1 of pp collision data collected at the Fermilab Tevatron at sqrt(s) = 1.96 TeV. Two models of exotic Higgs boson production are considered: a pseudoscalar Higgs boson with JP=0- and a graviton-like state with JP=2+. In these models, the kinematics of Higgs boson production in association with a vector boson are very different from those predicted for the Standard Model Higgs boson, which has JP = 0+. Both the CDF and DØ Collaborations have re-optimized their searches for WH→lνbb, ZH→l+l-bb, and WH + ZH→ MET bb to test the exotic Higgs boson models. Upper limits at the 95% CL on the production rate of an exotic Higgs boson X times the decay branching ratio Br(X→bb) are set at 0.36 times that predicted for the SM Higgs boson for the 2+ hypothesis, and at 0.36 times that predicted for the SM Higgs boson for the 0- hypothesis. if the production rate times the X→bb branching ratio of the exotic particle is the same as that predicted for the SM Higgs boson, then the exotic models are excluded with significances of 4.9 s.d. and 5.0 s.d. for the 2+ and 0- models, respectively.

Preprint: PDF

The same note is available as FERMILAB-CONF-14-265-E

We test the theoretical model proposed by John Ellis, Dae Sung Hwang, Verónica Sanz, and Tevong You in JHEP 1211 (2012) 134

Links:    CDF Higgs Results     DØ Higgs Results

Figures: Higgs Spin and Parity Test

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Last modified: Wed Sep 10, 2014, TEVNPHWG