A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/107979 https://doi.org/10.1016/j.physletb.2018.01.042 |
Resumo: | A search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1fb−1of proton–proton collision data at √s=13TeVcollected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle Xis assumed to decay to a pair of light quarks, and the fully hadronic final state XH→q¯q b¯ bis analysed. The search considers the regime of high XHresonance masses, where the Xand Hbosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XHmass versus Xmass is scanned for evidence of a signal, over a range of XHresonance mass values between 1TeV and 4TeV, and for Xparticles with masses from 50GeV to 1000GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XHand Xmasses, on the production cross-section of the XH→q¯q b¯bresonance. |
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A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detectorA search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1fb−1of proton–proton collision data at √s=13TeVcollected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle Xis assumed to decay to a pair of light quarks, and the fully hadronic final state XH→q¯q b¯ bis analysed. The search considers the regime of high XHresonance masses, where the Xand Hbosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XHmass versus Xmass is scanned for evidence of a signal, over a range of XHresonance mass values between 1TeV and 4TeV, and for Xparticles with masses from 50GeV to 1000GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XHand Xmasses, on the production cross-section of the XH→q¯q b¯bresonance.We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Ar-menia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azer-baijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Mo-rocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In ad-dition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, Eu-ropean Union; Investissements d’Avenir Labex and Idex, ANR, Ré-gion Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia pro-grammes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; CERCA Programme Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is ac-knowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Swe-den), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref.[65].Elsevier2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/107979http://hdl.handle.net/10316/107979https://doi.org/10.1016/j.physletb.2018.01.042engSantos, S. P. Amor dosFiolhais, M. C. N.Galhardo, B.Veloso, F.Wolters, H.ATLAS Collaborationinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:48:19Zoai:estudogeral.uc.pt:10316/107979Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:24:15.224340Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
title |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
spellingShingle |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector Santos, S. P. Amor dos |
title_short |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
title_full |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
title_fullStr |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
title_full_unstemmed |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
title_sort |
A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector |
author |
Santos, S. P. Amor dos |
author_facet |
Santos, S. P. Amor dos Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
author_role |
author |
author2 |
Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Santos, S. P. Amor dos Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
description |
A search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1fb−1of proton–proton collision data at √s=13TeVcollected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle Xis assumed to decay to a pair of light quarks, and the fully hadronic final state XH→q¯q b¯ bis analysed. The search considers the regime of high XHresonance masses, where the Xand Hbosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XHmass versus Xmass is scanned for evidence of a signal, over a range of XHresonance mass values between 1TeV and 4TeV, and for Xparticles with masses from 50GeV to 1000GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XHand Xmasses, on the production cross-section of the XH→q¯q b¯bresonance. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 |
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://hdl.handle.net/10316/107979 http://hdl.handle.net/10316/107979 https://doi.org/10.1016/j.physletb.2018.01.042 |
url |
http://hdl.handle.net/10316/107979 https://doi.org/10.1016/j.physletb.2018.01.042 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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