Probing the Goldstone equivalence theorem in heavy weak doublet decays

Dutta, Bhaskar; Gao, Yu; Sanford, David; Walker, Joel W.

doi:10.1103/PhysRevD.93.055020

Title: Probing the Goldstone equivalence theorem in heavy weak doublet decays

Journal Article · Tue Mar 15 00:00:00 EDT 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.055020· OSTI ID:1595833

Dutta, Bhaskar ^[1]; Gao, Yu ^[1]; Sanford, David ^[2]; Walker, Joel W. ^[3]

Texas A & M Univ., College Station, TX (United States)
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Sam Houston State Univ., Huntsville, TX (United States)

We explore here the decays from heavy Higgsino-like weak doublets into $Z$ , $h$ bosons and missing particles. When pair-produced at the LHC, the subsequent $Z$ , $h \to ℓ ℓ$ , $b \bar{b}$ decays in the doublet decay cascade can yield $4 ℓ$ , $2 ℓ 2 b$ and $4 b + E_{T} + j (s)$ final states. Mutual observation of any two of these channels would provide information on the associated doublets’ decay branching fractions into a $Z$ or $h$ , thereby probing the Goldstone equivalence relation, shedding additional light on the Higgs sector of beyond the Standard Model theories and facilitating the discrimination of various contending models, in turn. We compare the $Z / h$ decay ratio expected in the minimal supersymmetric model, the next-to-minimal supersymmetric model (NMSSM)and a minimal singlet-doublet dark matter model. Furthermore, we conduct a full Monte Carlo analysis of the prospects for detecting the targeted final states during 14 TeV running of the LHC in the context of a representative NMSSM benchmark model.

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Research Organization:: California Institute of Technology (CalTech), Pasadena, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)

Grant/Contract Number:: SC0011632; FG02-13ER42020; FG02-92ER40701; PHY-1521105; DEFG0292ER40701

OSTI ID:: 1595833

Alternate ID(s):: OSTI ID: 1242618

Journal Information:: Physical Review D, Vol. 93, Issue 5; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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