Collider signatures of Goldstone bosons

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volumn 89, Issue 1, 2014, Pages

  Cheung, Kingman ^a,b   Keung, Wai Yee ^c   Yuan, Tzu Chiang ^d  

^a Konkuk University   (South Korea)

^b NATIONAL TSING HUA UNIVERSITY   (Taiwan)

^c UNIVERSITY OF ILLINOIS AT CHICAGO   (United States)

^d INSTITUTE OF PHYSICS   (Taiwan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84894238140     PISSN: 15507998     EISSN: 15502368     Source Type: Journal    
DOI: 10.1103/PhysRevD.89.015007     Document Type: Article

References (18)

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10. In [2], Weinberg also suggested the global U (1) symmetry is the WIMP number by adding in the model one single Dirac field ψ with W = + 1 while the S field has W = + 2 so that its VEV leaves an unbroken Z 2 symmetry ψ →-ψ. The physical spectrum will contain two Majorana fields w ±. The one with lighter mass w-could then be the dark matter candidate which has an interaction-f θ 2 w-̄ w-H with the Higgs boson through mixing. If 2 m w-< m H, it will contribute to the invisible Higgs decay width as Γ H → w-̄ w-= (1 / 16 π) (f g âŸ̈⟩ âŸ̈ r ⟩ / (m H 2-m σ 2)) 2(m H 2-4 m w-2) 3 / 2. The exponent 3/2 reflects the P-wave feature of the decay amplitude. We do not include this in our analysis since more free parameters are necessary to bring in.
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