LHC dark matter signals from vector resonances and top partners
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevD.98.035019 http://hdl.handle.net/11449/164521 |
Resumo: | Extensions of the standard model which address the hierarchy problem and dark matter (DM) often contain top partners and additional resonances at the TeV scale. We explore the phenomenology of a simplified effective model with a vector resonance Z', a fermionic vectorlike colored partner of the top quark T' as well as a scalar DM candidate phi and provide publicly available implementations in CalcHEP and MadGraph. We study the pp -> Z' -> T'(T) over bar'-> t (t) over bar phi phi process at the LHC and find that it plays an important role in addition to the T'(T) over bar' production via strong interactions. It turns out that the presence of the Z' can provide a dominant contribution to the t (t) over bar + ET signature without conflicting with existing bounds from Z' searches in di-jet and di-lepton final states. We find that, through this process, the LHC is already probing DM masses up to about 900 GeVand top partner masses up to about 1.5 TeV, thus exceeding the current bounds from QCD production alone almost by a factor of 2 for both particles. |
id |
UNSP_a85492a585dab46e28eb88ebc704c997 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/164521 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
LHC dark matter signals from vector resonances and top partnersExtensions of the standard model which address the hierarchy problem and dark matter (DM) often contain top partners and additional resonances at the TeV scale. We explore the phenomenology of a simplified effective model with a vector resonance Z', a fermionic vectorlike colored partner of the top quark T' as well as a scalar DM candidate phi and provide publicly available implementations in CalcHEP and MadGraph. We study the pp -> Z' -> T'(T) over bar'-> t (t) over bar phi phi process at the LHC and find that it plays an important role in addition to the T'(T) over bar' production via strong interactions. It turns out that the presence of the Z' can provide a dominant contribution to the t (t) over bar + ET signature without conflicting with existing bounds from Z' searches in di-jet and di-lepton final states. We find that, through this process, the LHC is already probing DM masses up to about 900 GeVand top partner masses up to about 1.5 TeV, thus exceeding the current bounds from QCD production alone almost by a factor of 2 for both particles.InvisiblesPlus RISE from the European Union Horizon 2020 research and innovation program under the Marie Sklodowska-Curie GrantNExT Institute, Royal Society Leverhulme Trust Senior Research FellowshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)IBSUniv Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, EnglandRutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, EnglandInst for Basic Sci Korea, Ctr Theoret Phys Universe, Daejeon 34126, South KoreaUniv Estadual Paulista, ICTP South Amer Inst Fundamental Res, BR-01140070 Sao Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, BrazilKorea Inst Adv Study, Sch Phys, Seoul 02455, South KoreaUniv Estadual Paulista, ICTP South Amer Inst Fundamental Res, BR-01140070 Sao Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, BrazilInvisiblesPlus RISE from the European Union Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant: 690575NExT Institute, Royal Society Leverhulme Trust Senior Research Fellowship: LT140094IBS: IBS-R018-D1FAPESP: 2016/01343-7FAPESP: 2017/05770-0Amer Physical SocUniv SouthamptonRutherford Appleton LabInst for Basic Sci KoreaUniversidade Estadual Paulista (Unesp)Korea Inst Adv StudyBelyaev, Alexander S.Flacke, ThomasJain, Bithika [UNESP]Schaefers, Patrick B.2018-11-26T17:54:53Z2018-11-26T17:54:53Z2018-08-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article20application/pdfhttp://dx.doi.org/10.1103/PhysRevD.98.035019Physical Review D. College Pk: Amer Physical Soc, v. 98, n. 3, 20 p., 2018.2470-0010http://hdl.handle.net/11449/16452110.1103/PhysRevD.98.035019WOS:000441718100004WOS000441718100004.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review D1,801info:eu-repo/semantics/openAccess2023-11-01T06:11:30Zoai:repositorio.unesp.br:11449/164521Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:37:42.307193Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
LHC dark matter signals from vector resonances and top partners |
title |
LHC dark matter signals from vector resonances and top partners |
spellingShingle |
LHC dark matter signals from vector resonances and top partners Belyaev, Alexander S. |
title_short |
LHC dark matter signals from vector resonances and top partners |
title_full |
LHC dark matter signals from vector resonances and top partners |
title_fullStr |
LHC dark matter signals from vector resonances and top partners |
title_full_unstemmed |
LHC dark matter signals from vector resonances and top partners |
title_sort |
LHC dark matter signals from vector resonances and top partners |
author |
Belyaev, Alexander S. |
author_facet |
Belyaev, Alexander S. Flacke, Thomas Jain, Bithika [UNESP] Schaefers, Patrick B. |
author_role |
author |
author2 |
Flacke, Thomas Jain, Bithika [UNESP] Schaefers, Patrick B. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Univ Southampton Rutherford Appleton Lab Inst for Basic Sci Korea Universidade Estadual Paulista (Unesp) Korea Inst Adv Study |
dc.contributor.author.fl_str_mv |
Belyaev, Alexander S. Flacke, Thomas Jain, Bithika [UNESP] Schaefers, Patrick B. |
description |
Extensions of the standard model which address the hierarchy problem and dark matter (DM) often contain top partners and additional resonances at the TeV scale. We explore the phenomenology of a simplified effective model with a vector resonance Z', a fermionic vectorlike colored partner of the top quark T' as well as a scalar DM candidate phi and provide publicly available implementations in CalcHEP and MadGraph. We study the pp -> Z' -> T'(T) over bar'-> t (t) over bar phi phi process at the LHC and find that it plays an important role in addition to the T'(T) over bar' production via strong interactions. It turns out that the presence of the Z' can provide a dominant contribution to the t (t) over bar + ET signature without conflicting with existing bounds from Z' searches in di-jet and di-lepton final states. We find that, through this process, the LHC is already probing DM masses up to about 900 GeVand top partner masses up to about 1.5 TeV, thus exceeding the current bounds from QCD production alone almost by a factor of 2 for both particles. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T17:54:53Z 2018-11-26T17:54:53Z 2018-08-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevD.98.035019 Physical Review D. College Pk: Amer Physical Soc, v. 98, n. 3, 20 p., 2018. 2470-0010 http://hdl.handle.net/11449/164521 10.1103/PhysRevD.98.035019 WOS:000441718100004 WOS000441718100004.pdf |
url |
http://dx.doi.org/10.1103/PhysRevD.98.035019 http://hdl.handle.net/11449/164521 |
identifier_str_mv |
Physical Review D. College Pk: Amer Physical Soc, v. 98, n. 3, 20 p., 2018. 2470-0010 10.1103/PhysRevD.98.035019 WOS:000441718100004 WOS000441718100004.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review D 1,801 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
20 application/pdf |
dc.publisher.none.fl_str_mv |
Amer Physical Soc |
publisher.none.fl_str_mv |
Amer Physical Soc |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128679729954816 |