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- Bottom-up Naturalness

We study the naturalness problem using a model

independent bottom up approach by considering models where only the interaction

terms needed to cancel the Higgs quadratic divergences are present. If

quadratic divergences are canceled by terms linear in the Higgs field, then the

collider phenomenology is well covered by current electroweakino and fourth

generation searches. If quadratic divergences are canceled by terms bilinear in

the Higgs field, then the signatures are highly dependent on the quantum

numbers of the new particles. Precision Higgs measurements can reveal the

presence of new particles with either vevs or Standard Model charges. If the

new particles are scalar dark matter candidates, their direct and indirect

detection signatures will be highly correlated and within the reach of XENON100

and Fermi. Observation at one of these experiments would imply observation at

the other one. Observable LHC decay channels can also arise if the new

particles mix with lighter states. This decay channel involves only the Higgs

boson and not the gauge bosons. Observation of such decays would give evidence

that the new particle is tied to the naturalness problem.

Collection/Series:

Event Type:

Seminar

Scientific Area(s):

Speaker(s):

Event Date:

Mardi, Août 27, 2013 - 13:00 to 14:30

Location:

Space Room

Room #:

400

©2012 Institut Périmètre de Physique Théorique