Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √\(s\) = 13 TeV with the ATLAS detector
Please always quote using this URN: urn:nbn:de:bvb:20-opus-312681
- A search for new phenomena in events with two same- charge leptons or three leptons and jets identi fi ed as originating from b - quarks in a data sample of 36.1 fb of pp collisions at ps = 13TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No signi fi cant excess is found and limits are set on vector- like quark, fourtop- quark, and same- sign top- quark pair production. The observed ( expected) 95% CL mass limits for a vector- like T - and B - quark singlet are mT > 0 : 98 ( 0 : 99) TeV and mB > 1 : 00 ( 1 : 01)A search for new phenomena in events with two same- charge leptons or three leptons and jets identi fi ed as originating from b - quarks in a data sample of 36.1 fb of pp collisions at ps = 13TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No signi fi cant excess is found and limits are set on vector- like quark, fourtop- quark, and same- sign top- quark pair production. The observed ( expected) 95% CL mass limits for a vector- like T - and B - quark singlet are mT > 0 : 98 ( 0 : 99) TeV and mB > 1 : 00 ( 1 : 01) TeV respectively. Limits on the production of the vector- like T5=3 - quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5=3 - quark is ( expected to be) 1.19 ( 1.21) TeV. The Standard Model fourtop- quark production cross- section upper limit is ( expected to be) 69 ( 29) fb. Constraints are also set on exotic four- top- quark production models. Finally, limits are set on samesign top- quark pair production. The upper limit on uu ! tt production is ( expected to be) 89 ( 59) fb for a mediator mass of 1TeV, and a dark- matter interpretation is also derived, excluding a mediator of 3TeV with a dark- sector coupling of 1.0 and a coupling to ordinary matter above 0.31.…
| URN: | urn:nbn:de:bvb:20-opus-312681 |
|---|---|
| Document Type: | Journal article |
| Faculties: | Fakultät für Physik und Astronomie / Physikalisches Institut |
| Language: | English |
| Parent Title (English): | Journal of High Energy Physics |
| Year of Completion: | 2018 |
| Volume: | 12 |
| Issue: | 39 |
| Pagenumber: | 1-55 |
| Source: | J. High Energ. Phys. 2018, 39 (2018). doi:10.1007/JHEP12(2018)039 |
| DOI: | https://doi.org/10.1007/JHEP12(2018)039 |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Tag: | Hadron-Hadron scattering (experiments); SUSHI |
| Release Date: | 2024/07/26 |
| Creating Corporation: | The ATLAS Collaboration |
| Licence (German): |  CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |