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Title: Doubly blind spots in scalar dark matter models

Journal Article · · Physical Review. D.

We consider a framework where the Standard Model is augmented by a second SU(2) scalar doublet and by a real scalar singlet that, protected by a Z2 symmetry, provides a particle dark matter candidate. We show that this setup allows for doubly blind spots at both collider searches for anomalies in the Higgs invisible decay width, and at direct dark matter detection. The blind spots originate from cancellations between interfering diagrams featuring different neutral scalar exchanges and from cancellations driven by the two-Higgs doublet structure in the vertex coupling the singlet state with the Standard-Model-like Higgs. We demonstrate that the blind spots arise in a wide and generic array of realizations for the two-Higgs doublet model, including scenarios with a nontrivial flavor structure. We provide analytical formulas that describe the location of the blind spots in the theory parameter space, and we discuss the resulting phenomenology.

Research Organization:
Univ. of California, Santa Cruz, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
SC0010107; PHY-912719; de-sc0010107
OSTI ID:
1564557
Alternate ID(s):
OSTI ID: 1611355
Journal Information:
Physical Review. D., Vol. 100, Issue 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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