Publicação
Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
| Resumo: | A search for excited electrons produced in pp collisions at s√ = 13 TeV via a contact interaction qq¯→ee∗ is presented. The search uses 36.1 fb−1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp→ee∗→eeqq¯ and pp→ee∗→eνW production cross sections as a function of the excited electron mass me∗ at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me∗. For me∗<0.5 TeV, the lower bound for Λ is 11 TeV. In the special case of me∗=Λ, the values of me∗<4.8 TeV are excluded. The presented limits on Λ are more stringent than those obtained in previous searches. |
|---|---|
| Autores principais: | Onofre, A. |
| Outros Autores: | Castro, Nuno Filipe; ATLAS Collaboration |
| Assunto: | Ciências Naturais::Ciências Físicas |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438421186707456 |
|---|---|
| author | Onofre, A. |
| author2 | Castro, Nuno Filipe ATLAS Collaboration |
| author2_role | author author |
| author_facet | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Onofre, A.\"},{\"Person.name\":\"Castro, Nuno Filipe\"},{\"Person.name\":\"ATLAS Collaboration\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| datacite.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2020-02-03T01:01:46Z |
| datacite.date.embargoed.fl_str_mv | 2020-02-03T01:01:46Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Ciências Naturais::Ciências Físicas |
| datacite.titles.title.fl_str_mv | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| dc.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2020-02-03T01:01:46Z |
| dc.date.embargoed.fl_str_mv | 2020-02-03T01:01:46Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/63592 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Springer |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Ciências Naturais::Ciências Físicas |
| dc.title.fl_str_mv | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | A search for excited electrons produced in pp collisions at s√ = 13 TeV via a contact interaction qq¯→ee∗ is presented. The search uses 36.1 fb−1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp→ee∗→eeqq¯ and pp→ee∗→eνW production cross sections as a function of the excited electron mass me∗ at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me∗. For me∗<0.5 TeV, the lower bound for Λ is 11 TeV. In the special case of me∗=Λ, the values of me∗<4.8 TeV are excluded. The presented limits on Λ are more stringent than those obtained in previous searches. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/d3257aa9-f20c-49f3-99fc-b8adcf26277b/download |
| id | rum_fffd91dafe4cd8e4cce57ba042d0ab9a |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/63592 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/63592 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| publishDate | 2019 |
| publisher.none.fl_str_mv | Springer |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engSpringerporA search for excited electrons produced in pp collisions at s√ = 13 TeV via a contact interaction qq¯→ee∗ is presented. The search uses 36.1 fb−1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp→ee∗→eeqq¯ and pp→ee∗→eνW production cross sections as a function of the excited electron mass me∗ at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me∗. For me∗<0.5 TeV, the lower bound for Λ is 11 TeV. In the special case of me∗=Λ, the values of me∗<4.8 TeV are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.application/pdfporSearch for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHCOnofre, A.Castro, Nuno FilipeATLAS CollaborationHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONAaboud, M., Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abeloos, B., . . . Zwalinski, L. (2019). Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC. [Article]. European Physical Journal C, 79(9). doi: 10.1140/epjc/s10052-019-7295-1ISSNIsPartOf1434-6044EISSNIsPartOf1434-6052DOIIsPartOf10.1140/epjc/s10052-019-7295-12020-02-03T01:01:46Z20192019-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/63592http://purl.org/coar/access_right/c_abf2open accesshttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Naturais::Ciências Físicas1519006 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/d3257aa9-f20c-49f3-99fc-b8adcf26277b/download |
| spellingShingle | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC Onofre, A. Ciências Naturais::Ciências Físicas |
| status | SINGLETON |
| subject.other.fl_str_mv | Ciências Naturais::Ciências Físicas |
| title | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| title_full | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| title_fullStr | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| title_full_unstemmed | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| title_short | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| title_sort | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
| topic | Ciências Naturais::Ciências Físicas |
| topic_facet | Ciências Naturais::Ciências Físicas |
| url | https://hdl.handle.net/1822/63592 |
| visible | 1 |