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Draper, P; Kozaczuk, J; Yu, JH
Theta in new QCD-like sectors
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordSTRONG CP PROBLEM PROTON-PROTON COLLISIONS PAIR-PRODUCED RESONANCES ROOT-S=13 TEV FINAL-STATES NATURAL SUPPRESSION INVISIBLE AXION ATLAS DETECTOR STRONG P SEARCH
AbstractNew QCD-like "hypercolor" sectors can generate a broad class of new signatures at hadron colliders and furnish a variety of dark matter candidates. Paired diboson resonances are a particularly important collider signature, arising both from CP-conserving vector hypermeson decays of the form (rho) over tilde -> (pi) over tilde(pi) over tilde -> 4V and from CP-violating pseudoscalar hypermeson decays of the form (eta) over tilde -> (pi) over tilde(pi) over tilde -> 4V. The latter are sensitive to the vacuum angle (theta) over tilde in the hypercolor sector. We study single- and paired-diboson resonance signatures in final states involving gluons and photons at the LHC and a future 100 TeV pp collider, illustrating the discovery potential at both colliders in simple benchmark models. We also describe some of the theoretical and cosmological consequences of (theta) over tilde. If CP-violating hypermeson decays are observable at hadron colliders, ordinary QCD must have an axion. Such scenarios also provide a natural setting for a dark pion component of dark matter, with its relic abundance set by CP-violating annihilations. If the new vacuum angle is relaxed to zero by a dark axion, the relic density can instead be a mixture of axions and dark axions. Overproduction of dark axions is most easily avoided if the Universe underwent a period of early matter domination.
2018
ISSN2470-0010
Volume98Issue:1Pages:15028
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.98.015028
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/22859
Collection理论物理所科研产出_SCI期刊论文
Affiliation1.[Draper, Patrick
2.Kozaczuk, Jonathan
3.Univ Massachusetts, Amherst Ctr Fundamental Interact, Dept Phys, Amherst, MA 01003 USA
4.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Draper, P,Kozaczuk, J,Yu, JH. Theta in new QCD-like sectors[J]. PHYSICAL REVIEW D,2018,98(1):15028.
APA Draper, P,Kozaczuk, J,&Yu, JH.(2018).Theta in new QCD-like sectors.PHYSICAL REVIEW D,98(1),15028.
MLA Draper, P,et al."Theta in new QCD-like sectors".PHYSICAL REVIEW D 98.1(2018):15028.
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