• • • We do not use the following data for averages, fits, limits, etc. • • • |
$<47$ |
95 |
1 |
|
ATLS |
$<49$ |
95 |
2 |
|
ATLS |
$13$ ${}^{+11}_{-9}$ |
|
3 |
|
CMS |
$<48$ |
95 |
4 |
|
CMS |
$<69$ |
95 |
5 |
|
ATLS |
$16.9$ ${}^{+13.8}_{-11.4}$ |
|
6 |
|
CMS |
$<94$ |
95 |
7 |
|
CMS |
$<42$ |
95 |
8 |
|
CMS |
1
AABOUD 2019AP based on 36.1 fb${}^{-1}$ of data. The upper limit corresponds to 5.1 times the NLO SM cross section.
|
2
AABOUD 2019AP limit from data combined with AABOUD 2018CE. The upper limit corresponds to 5.3 times the NLO SM cross section. Also a limit on the four-top-quark contact interaction of $\vert \mathit C_{4t}\vert /\Lambda {}^{2}$ $<$ 1.9 TeV${}^{-2}$ (95$\%$ CL) is obtained in an EFT model.
|
3
SIRUNYAN 2019CN based on 35.8 fb${}^{-1}$ of data, combined with SIRUNYAN 2018BU. The results are also interpreted in the effective field theory framework.
|
4
SIRUNYAN 2019CN based on 35.8 fb${}^{-1}$ of data. A multivariate analysis using global event and jet propoerties is performed to discriminate from ${{\mathit t}}{{\overline{\mathit t}}}$ background.
|
5
AABOUD 2018CE based on 36.1 fb${}^{-1}$ of proton-proton data taken at $\sqrt {s }$ = 13 TeV. Events including a same-sign lepton pair are used. The result is consistent with the NLO SM cross section of 9.2 fb.
|
6
SIRUNYAN 2018BU based on 35.9 fb${}^{-1}$ of proton-proton data taken at $\sqrt {s }$ = 13 TeV. Yields from signal regions and control regions defined based on ${{\mathit N}_{{jets}}}$, ${{\mathit N}_{{b}}}$ and ${{\mathit N}_{{l}}}$ are combined in a maximum-likelihood fit. The result is in agreement with the NLO SM prediction $9.2$ ${}^{+2.9}_{-2.4}$ fb. The measurement constrains the top quark Yukawa coupling strength parameter to be $\vert \mathit Y_{t}/\mathit Y{}^{SM}_{t}\vert $ $<$ 2.1 (95$\%$ CL).
|
7
SIRUNYAN 2017AB based on 2.6 fb${}^{-1}$ of data. A multivariate analysis is used to discriminate between ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit t}}{{\overline{\mathit t}}}$ signal and ${{\mathit t}}{{\overline{\mathit t}}}$ background. A combination with a previous search (CMS, KHACHATRYAN 2016BJ) in the same-sign dilepton channel gives an upper limit of 69 fb (95$\%$ CL), corresponding to 7.4$\cdot{}$(SM prediction).
|
8
SIRUNYAN 2017S based on 35.9 fb${}^{-1}$. The limit is in agreement with the NLO SM prediction $9.2$ ${}^{+2.9}_{-2.4}$ fb. Superseded by SIRUNYAN 2018BU. The signal events are also used to constrain various new physics models.
|