Repository logo
 
Publication

Scalar mass dependence of angular variables in t(t)over-bar phi production

2020-06-25Journal article Open access
Simple item page
dc.contributor.authorAzevedo, Duarte
dc.contributor.authorCapucha, Rodrigo
dc.contributor.authorOnofre, Antonio
dc.contributor.authorSantos, Rui
dc.date.accessioned2021-01-22T10:49:52Z
dc.date.available2021-01-22T10:49:52Z
dc.date.issued2020-06-25
dc.description.abstractIn this paper we explore CP discrimination in the associated production of top-quark pairs (t (t) over bar) 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 (t) over bar phi system, with phi -> (b) over bar. 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 aMC@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.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAZEVEDO, Duarte; [et al] – Scalar mass dependence of angular variables in t(t)over-bar phi production. Journal of High Energy Physics. ISSN 1029-8479. Vol. 2020, N.º 6 (2020), pp. 1-31pt_PT
dc.identifier.doi10.1007/JHEP06(2020)155pt_PT
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/10400.21/12667
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationUIDB/00618/2020 - FCTpt_PT
dc.relationUIDP/00618/2020 - FCTpt_PT
dc.relationPTDC/FISPAR/31000/2017 - FCTpt_PT
dc.relationCERN/FIS-PAR/0002/2017 - FCTpt_PT
dc.relationUMO-2015/18/M/ST2/00518 - HARMONIA projectpt_PT
dc.relationCERN/FIS-PAR/0029/2019 - FCTpt_PT
dc.relationULisboa - BD2018pt_PT
dc.subjectBeyond Standard Modelpt_PT
dc.subjectCP violationpt_PT
dc.titleScalar mass dependence of angular variables in t(t)over-bar phi productionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage31pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of High Energy Physicspt_PT
oaire.citation.volume2020
person.familyNameAzevedo
person.familyNameOnofre
person.familyNameSantos
person.givenNameDuarte
person.givenNameAntonio
person.givenNameRui
person.identifier100360
person.identifier.ciencia-idEE1E-B7A4-FD9A
person.identifier.ciencia-id391A-A892-2786
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.orcid0000-0002-2647-1893
person.identifier.orcid0000-0003-3471-2703
person.identifier.orcid0000-0002-7948-0355
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id10739338800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication32a0345e-a190-40aa-a0ef-ae72f56b571b
relation.isAuthorOfPublication3700cc9c-6ea1-497c-9560-c8795a892c3b
relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication.latestForDiscovery3700cc9c-6ea1-497c-9560-c8795a892c3b

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Scalar_RSantos.pdf
Size:
3.35 MB
Format:
Adobe Portable Document Format
Download

Collections

ISEL - Física - Artigos