Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69371
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Azevedo, Duarte | por |
dc.contributor.author | Capucha, Rodrigo | por |
dc.contributor.author | Onofre, A. | por |
dc.contributor.author | Santos, Rui | por |
dc.date.accessioned | 2021-01-18T00:14:16Z | - |
dc.date.available | 2021-01-18T00:14:16Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Azevedo, D., Capucha, R., Onofre, A., & Santos, R. (2020). Scalar mass dependence of angular variables in tt¯ ϕ production. [Article]. Journal of High Energy Physics, 2020(6). doi: 10.1007/jhep06(2020)155 | por |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | https://hdl.handle.net/1822/69371 | - |
dc.description.abstract | In this paper we explore CP discrimination in the associated production of top-quark pairs ($t\bar{t}$) with a generic scalar boson ($\phi$) at the LHC. We probe the CP-sensitivity of several observables for a varying scalar boson mass and CP-number, either CP-even ($\phi=H$) or CP-odd ($\phi=A$), using dileptonic final states of the $t\bar{t}\phi$ system, with $\phi\rightarrow b\bar{b}$. We show that CP-searches are virtually impossible for $\phi$ boson masses above a few hundred GeV in this channel. A full phenomenological analysis was performed, using Standard Model background and signal events generated with MadGraph5 MC@NLO and reconstructed using a kinematic fit. The most sensitive CP-observables are used to compute Confidence Levels (CLs), as a function of luminosity, for the exclusion of different signal hypotheses with scalar and pseudoscalar boson masses that range from $m_\phi$ = 40 GeV up to 200 GeV. We finalize by analysing the impact of a measurement (or limit) of the CP-violating angle in the parameter space of a complex two-Higgs doublet model known as the C2HDM. | por |
dc.description.sponsorship | DA, RC and RS are partially supported by the Portuguese Foundation for Science and Tech-nology (FCT) under Contracts no. UIDB/00618/2020, UIDP/00618/2020, PTDC/FIS-PAR/31000 /2017 and CERN/FIS-PAR/0002/2017, and the HARMONIA project undercontract UMO-2015/18/M/ ST2/00518. AO is partially supported by FCT, under the Contract CERN/FIS-PAR/0029/2019. DA is supported by ULisboa { BD2018. | por |
dc.language.iso | eng | por |
dc.publisher | Springer | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00618%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00618%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-PAR%2F31000%2F2017/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/CERN%2FFIS-PAR%2F0002%2F2017/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/CERN%2FFIS-PAR%2F0029%2F2019/PT | por |
dc.rights | openAccess | por |
dc.subject | Beyond Standard Model | por |
dc.subject | CP violation | por |
dc.title | Scalar mass dependence of angular variables in $t\bar tφ$ production | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://link.springer.com/article/10.1007%2FJHEP06%282020%29155 | por |
oaire.citationIssue | 6 | por |
oaire.citationVolume | 2020 | por |
dc.identifier.eissn | 1029-8479 | - |
dc.identifier.doi | 10.1007/JHEP06(2020)155 | por |
dc.subject.fos | Ciências Naturais::Ciências Físicas | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of High Energy Physics | por |
oaire.version | VoR | por |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Azevedo2020_Article_ScalarMassDependenceOfAngularV.pdf | 3,43 MB | Adobe PDF | Ver/Abrir |