dc.contributor.author |
CMS Collaboration |
en_US |
dc.contributor.author |
Sirunyan, A. M. |
en_US |
dc.contributor.author |
CHAUHAN, S. |
en_US |
dc.contributor.author |
DUBE, SOURABH |
en_US |
dc.contributor.author |
HEGDE, V. |
en_US |
dc.contributor.author |
KAPOOR, A. |
en_US |
dc.contributor.author |
KOTHEKAR, K. |
en_US |
dc.contributor.author |
PANDEY, S. |
en_US |
dc.contributor.author |
RANE, A. |
en_US |
dc.contributor.author |
RASTOGI, A. |
en_US |
dc.contributor.author |
SHARMA, SEEMA et al. |
en_US |
dc.date.accessioned |
2020-03-13T05:09:40Z |
|
dc.date.available |
2020-03-13T05:09:40Z |
|
dc.date.issued |
2019-11 |
en_US |
dc.identifier.citation |
Journal of High Energy Physics, 2019(11). |
en_US |
dc.identifier.issn |
1029-8479 |
en_US |
dc.identifier.uri |
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/4491 |
|
dc.identifier.uri |
https://doi.org/10.1007/JHEP11(2019)082 |
en_US |
dc.description.abstract |
A search for the standard model production of four top quarks (pp → tt¯tt¯) is reported using single-lepton plus jets and opposite-sign dilepton plus jets signatures. Proton-proton collisions are recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV in a sample corresponding to an integrated luminosity of 35.8 fb−1. A multivariate analysis exploiting global event and jet properties is used to discriminate tt¯tt¯ from tt¯ production. No significant deviation is observed from the predicted background. An upper limit is set on the cross section for tt¯tt¯ production in the standard model of 48 fb at 95% confidence level. When combined with a previous measurement by the CMS experiment from an analysis of other final states, the observed signal significance is 1.4 standard deviations, and the combined cross section measurement is 13+11−9 fb. The result is also interpreted in the framework of effective field theory. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer Nature |
en_US |
dc.subject |
Hadron-Hadron scattering (experiments) |
en_US |
dc.subject |
Top physics |
en_US |
dc.subject |
2019 |
en_US |
dc.subject |
2020-MAR-WEEK2 |
en_US |
dc.title |
Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at √s = 13 TeV |
en_US |
dc.type |
Article |
en_US |
dc.contributor.department |
Dept. of Physics |
en_US |
dc.identifier.sourcetitle |
Journal of High Energy Physics |
en_US |
dc.publication.originofpublisher |
Foreign |
en_US |