Loopholes in Z ′ searches at the LHC: exploring supersymmetric and leptophobic scenarios

Autor: Mariana Frank, Benjamin Fuks, Jack Y. Araz, Gennaro Corcella
Přispěvatelé: Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Laboratoire de Physique Théorique et Hautes Energies ( LPTHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Institut Universitaire de France ( IUF ), Ministère de l'Éducation nationale, de l’Enseignement supérieur et de la Recherche ( M.E.N.E.S.R. )
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Drell-Yan process
Nuclear and High Energy Physics
Particle physics
interpretation of experiments: CERN LHC Coll
FOS: Physical sciences
Context (language use)
interpretation of experiments: CMS
01 natural sciences
interpretation of experiments: ATLAS
Standard Model
benchmark
High Energy Physics - Phenomenology (hep-ph)
lepton: coupling: low
Atlas (anatomy)
0103 physical sciences
medicine
Grand Unified Theory
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
010306 general physics
Boson
Physics
Large Hadron Collider
010308 nuclear & particles physics
dilepton: final state
High Energy Physics::Phenomenology
Drell–Yan process
Supersymmetry
dijet: final state
3. Good health
High Energy Physics - Phenomenology
medicine.anatomical_structure
Supersymmetry Phenomenology
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
lcsh:QC770-798
[ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
supersymmetry
vector boson: heavy
Zdroj: Journal of High Energy Physics
Journal of High Energy Physics, Springer, 2018, 02, pp.092. ⟨10.1007/JHEP02(2018)092⟩
JHEP
JHEP, 2018, 02, pp.092. ⟨10.1007/JHEP02(2018)092⟩
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-32 (2018)
JHEP, 2018, 02, pp.092. 〈10.1007/JHEP02(2018)092〉
ISSN: 1126-6708
1029-8479
DOI: 10.1007/JHEP02(2018)092⟩
Popis: Searching for heavy vector bosons $Z^\prime$, predicted in models inspired by Grand Unification Theories, is among the challenging objectives of the LHC. The ATLAS and CMS collaborations have looked for $Z^\prime$ bosons assuming that they can decay only into Standard Model channels, and have set exclusion limits by investigating dilepton, dijet and to a smaller extent top-antitop final states. In this work we explore possible loopholes in these $Z^\prime$ searches by studying supersymmetric as well as leptophobic scenarios. We demonstrate the existence of realizations in which the $Z^\prime$ boson automatically evades the typical bounds derived from the analyses of the Drell-Yan invariant-mass spectrum. Dileptonic final states can in contrast only originate from supersymmetric $Z^\prime$ decays and are thus accompanied by additional effects. This feature is analyzed in the context of judiciously chosen benchmark configurations, for which visible signals could be expected in future LHC data with a $4\sigma-7\sigma$ significance. Our results should hence motivate an extension of the current $Z^\prime$ search program to account for supersymmetric and leptophobic models.
Comment: 32 pages, 15 figures. After JHEP revision. Published on 15 February 2018
Databáze: OpenAIRE
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