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
Figures: Higgs Spin and Parity Test
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