# ${{\boldsymbol t}}{{\overline{\boldsymbol t}}}$ Production Cross Section in ${{\boldsymbol p}}{{\boldsymbol p}}$ Collisions at $\sqrt {s }$ = 7 TeV INSPIRE search

Unless otherwise noted the first quoted error is from statistics, the second from systematic uncertainties, and the third from luminosity. If only two errors are quoted the luminosity is included in the systematic uncertainties.
VALUE (pb) DOCUMENT ID TECN  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
$161.7$ $\pm6.0$ $\pm12.0$ $\pm3.6$ 1
 2017 B
CMS ${{\mathit \ell}}+\not E_T+{}\geq{}$4j (${}\geq{}1{{\mathit b}}$)
$173.6$ $\pm2.1$ ${}^{+4.5}_{-4.0}$ $\pm3.8$ 2
 2016 AW
CMS ${{\mathit e}}$ + ${{\mathit \mu}}$ + $\not E_T$ + ${}\geq{}$0j
$181.2$ $\pm2.8$ ${}^{+10.8}_{-10.6}$ 3
 2015 BO
ATLS ${{\mathit e}}$ + ${{\mathit \mu}}$ + $\not E_T$ + ${}\geq{}$0j
$178$ $\pm3$ $\pm16$ $\pm3$ 4
 2015 CC
ATLS ${{\mathit \ell}}$+jets, ${{\mathit \ell}}{{\mathit \ell}}$ +jets, ${{\mathit \ell}}{{\mathit \tau}_{{h}}}$ +jets
5
 2015 R
LHCB ${{\mathit \mu}}+{}\geq{}$1j(${{\mathit b}}$-tag) forward region
$182.9$ $\pm3.1$ $\pm6.4$ 6
 2014 AY
ATLS ${{\mathit e}}$ + ${{\mathit \mu}}$ + 1 or 2${{\mathit b}}$ jets
$194$ $\pm18$ $\pm46$ 7
 2013 X
ATLS ${{\mathit \tau}_{{h}}}$ + $\not E_T$ + ${}\geq{}$5j (${}\geq{}2{{\mathit b}}$)
$139$ $\pm10$ $\pm26$ 8
 2013 AY
CMS ${}\geq{}$6 jets with 2 b-tags
$158.1$ $\pm2.1$ $\pm10.8$ 9
 2013 BB
CMS ${{\mathit \ell}}$ + $\not E_T$ + jets(${}\geq{}$1 b-tag)
$152$ $\pm12$ $\pm32$ 10
 2013 BE
CMS ${{\mathit \tau}_{{h}}}$+ $\not E_T$+ ${}\geq{}$4 jets (${}\geq{}$1 b)
$177$ $\pm20$ $\pm14$ $\pm7$ 11
 2012 B
$176$ $\pm5$ ${}^{+14}_{-11}$ $\pm8$ 12
 2012 BF
ATLS ${{\mathit \ell}}{{\mathit \ell}}$ +$\not E_T+{}\geq{}$2j
$187$ $\pm11$ ${}^{+18}_{-17}$ $\pm6$ 13
 2012 BO
ATLS ${{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$ 3j with ${{\mathit b}}$-tag
$186$ $\pm13$ $\pm20$ $\pm7$ 14
 2012 CG
ATLS ${{\mathit \ell}}$ + ${{\mathit \tau}_{{h}}}$+ $\not E_T+{}\geq{}$2j (${}\geq{}1{{\mathit b}}$)
$143$ $\pm14$ $\pm22$ $\pm3$ 15
 2012 AC
CMS ${{\mathit \ell}}$ + ${{\mathit \tau}_{{h}}}$+ $\not E_T+{}\geq{}$2j (${}\geq{}1{{\mathit b}}$)
$161.9$ $\pm2.5$ ${}^{+5.1}_{-5.0}$ $\pm3.6$ 16
 2012 AX
CMS ${{\mathit \ell}}{{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$ 2${{\mathit b}}$
$145$ $\pm31$ ${}^{+42}_{-27}$ 17
 2011 A
ATLS ${{\mathit \ell}}+\not E_T+{}\geq{}$4j, ${{\mathit \ell}}{{\mathit \ell}}$ +$\not E_T+{}\geq{}$2j
$173$ ${}^{+39}_{-32}$ $\pm7$ 18
 2011 AA
CMS ${{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$3 jets
$168$ $\pm18$ $\pm14$ $\pm7$ 19
 2011 F
CMS ${{\mathit \ell}}{{\mathit \ell}}$ + $\not E_T$ + jets
$154$ $\pm17$ $\pm6$ 20
 2011 Z
CMS Combination
$194$ $\pm72$ $\pm24$ $\pm21$ 21
 2011 A
CMS ${{\mathit \ell}}{{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$2 jets
1  KHACHATRYAN 2017B based on 5.0 fb${}^{-1}$ of data, using a binned likelihood fit of templates to the data. Also the ratio ${\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}$ ; 8 TeV${)}/{\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}$ ; 7 TeV${)}$ = $1.43$ $\pm0.04$ $\pm0.07$ $\pm0.05$ is reported. The results are in agreement with NNLO SM predictions.
2  KHACHATRYAN 2016AW based on 5.0 fb${}^{-1}$ of data, using a binned likelihood fit to differential distributions of ${{\mathit b}}$-tagged and non-${{\mathit b}}$-tagged jets. The result is in good agreement with NNLO SM predictions.
3  Based on 4.6 fb${}^{-1}$ of data. Uses a template fit to distributions of $\not E_T$ and jet multiplicities to measure simultaneously ${{\mathit t}}{{\overline{\mathit t}}}$ , ${{\mathit W}}{{\mathit W}}$ , and ${{\mathit Z}}$/ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit \tau}}$ cross sections, assuming ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
4  AAD 2015CC based on 4.6 fb${}^{-1}$ of data. The event selection criteria are optimized for the ${{\mathit \ell}}{{\mathit \tau}_{{h}}}$ + jets channel. Using only this channel $183$ $\pm9$ $\pm23$ $\pm3$ pb is derived for the cross section.
5  AAIJ 2015R, based on 1.0 fb${}^{-1}$ of data, reports $0.239$ $\pm0.053$ $\pm0.033$ $\pm0.024$ pb cross section for the forward fiducial region ${{\mathit p}_{{T}}}({{\mathit \mu}}$) $>$ 25 GeV, 2.0 $<$ ${{\mathit \eta}}({{\mathit \mu}}$) $<$ 4.5, 50 GeV $<$ ${{\mathit p}_{{T}}}$ (${{\mathit b}}$) $<$ 100 GeV, 2.2 $<$ ${{\mathit \eta}}({{\mathit b}}$) $<$ 4.2, ${{\mathit \Delta}}{{\mathit R}}({{\mathit \mu}},{{\mathit b}}$) $>$ 0.5, and ${{\mathit p}_{{T}}}({{\mathit \mu}}+{{\mathit b}}$) $>$ 20 GeV. The three errors are from statistics, systematics, and theory. The result agrees with the SM NLO prediction.
6  AAD 2014AY reports $182.9$ $\pm3.1$ $\pm4.2$ $\pm3.6$ $\pm3.3$ pb value based on 4.6 fb${}^{-1}$ of data. The four errors are from statistics, systematic, luminosity, and the 0.66$\%$ beam energy uncertainty. We have combined the systematic uncertainties in quadrature. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5GeV; for other ${\mathit m}_{{{\mathit t}}}$, ${\mathit \sigma (}{\mathit m}_{{{\mathit t}}}{)}$ = $\sigma$(172.5GeV)${\times }[1-0.0028{\times }({\mathit m}_{{{\mathit t}}}-172.5$GeV)]. The result is consistent with the SM prediction at NNLO.
7  Based on 1.67 fb${}^{-1}$ of data. The result uses the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
8  Based on 3.54 fb${}^{-1}$ of data.
9  Based on 2.3 fb${}^{-1}$ of data.
10  Based on 3.9 fb${}^{-1}$ of data.
11  Based on 35 pb${}^{-1}$ of data for an assumed top quark mass of ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
12  Based on 0.70 fb${}^{-1}$ of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
13  Based on 35 pb${}^{-1}$ of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV and $173$ $\pm17$ ${}^{+18}_{-16}$ $\pm6$ pb is found without the ${{\mathit b}}$-tag.
14  Based on 2.05 fb${}^{-1}$ of data. The hadronic ${{\mathit \tau}}$ candidates are selected using a BDT technique. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
15  Based on 2.0 fb${}^{-1}$ and 2.2 fb${}^{-1}$ of data for ${{\mathit \ell}}$ = ${{\mathit e}}$ and ${{\mathit \ell}}$ = ${{\mathit \mu}}$, respectively. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
16  Based on 2.3 fb${}^{-1}$ of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the profile likelihood-ratio (PLB) method and an assumed ${\mathit m}_{{{\mathit t}}}$ of 172.5 GeV.
17  Based on 2.9 pb${}^{-1}$ of data. The result for single lepton channels is $142$ $\pm34$ ${}^{+50}_{-31}$ pb, while for the dilepton channels is $151$ ${}^{+78}_{-62}{}^{+37}_{-24}$ pb.
18  Result is based on 36 pb${}^{-1}$ of data. The first uncertainty corresponds to the statistical and systematic uncertainties, and the second corresponds to the luminosity.
19  Based on 36 pb${}^{-1}$ of data. The ratio of ${{\mathit t}}{{\overline{\mathit t}}}$ and ${{\mathit Z}}/{{\mathit \gamma}^{*}}$ cross sections is measured as ${\mathit \sigma (}$ ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit t}}{{\overline{\mathit t}}}{)}/{\mathit \sigma (}$ ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit Z}}$ / ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ / ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{)}$ = $0.175$ $\pm0.018$(stat)$\pm0.015$(syst) for 60 $<$ ${\mathit m}_{\mathrm { {{\mathit \ell}} {{\mathit \ell}} }}<$ 120 GeV, for which they use an NNLO prediction for the denominator cross section of $972$ $\pm42$ pb.
20  Result is based on 36 pb${}^{-1}$ of data. The first error is from statistical and systematic uncertainties, and the second from luminosity. This is a combination of a measurement in the dilepton channel (CHATRCHYAN 2011F) and the measurement in the ${{\mathit \ell}}$ + jets channel (CHATRCHYAN 2011Z) which yields $150$ $\pm9$ $\pm17$ $\pm6$ pb.
21  Result is based on $3.1$ $\pm0.3$ pb${}^{-1}$ of data.
References:
 KHACHATRYAN 2017B
EPJ C77 15 Measurements of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in Lepton+Jets Final States in ${{\mathit p}}{{\mathit p}}$ Collisions at 8 TeV and Ratio of 8 to 7 TeV Cross Sections
 KHACHATRYAN 2016AW
JHEP 1608 029 Measurement of the ${\mathit {\mathit t}}−{\mathit {\overline{\mathit t}}}$ Production Cross Section in the ${{\mathit e}}−{{\mathit \mu}}$ Channel in Proton-Proton Collisions at $\sqrt {s }$ = 7 and 8 TeV
PR D91 052005 imultaneous Measurements of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$, ${{\mathit W}^{+}}{{\mathit W}^{-}}$, and ${{\mathit Z}}$ $/$ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit \tau}}$ Production Cross-Sections in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV with the ATLAS Detector
PR D92 072005 Measurements of the Top Quark Branching Ratios into Channels with Leptons and Quarks with the ATLAS Detector
 AAIJ 2015R
PRL 115 112001 First Observation of Top Quark Production in the Forward Region
EPJ C74 3109 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross-Section using ${{\mathit e}}{{\mathit \mu}}$ Events with ${\mathit {\mathit b}}$-Tagged Jets in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 and 8 TeV with the ATLAS Detector
EPJ C73 2328 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in the tau + Jets Channel using the ATLAS Detector
 CHATRCHYAN 2013BB
PL B720 83 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV with Lepton + Jets Final States
 CHATRCHYAN 2013AY
JHEP 1305 065 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in the All-Jet Final State in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
 CHATRCHYAN 2013BE
EPJ C73 2386 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in the ${{\mathit \tau}}$+jets Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
JHEP 1205 059 Measurement of the Cross Section for Top-Quark Pair Production in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV with the ATLAS Detector using Final States with Two High-${{\mathit p}_{{T}}}$ Leptons
PL B707 459 Measurement of the Top Quark Pair Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7$~$TeV in Dilepton Final States with ATLAS
PL B711 244 Measurement of the Top Quark Pair Production Cross-Section with ATLAS in the Single Lepton Channel
PL B717 89 Measurement of the Top Quark Pair Cross Section with ATLAS in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV using Final States with an Electron or a Muon and a Hadronically Decaying ${{\mathit \tau}}$ Lepton
 CHATRCHYAN 2012AC
PR D85 112007 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV in Dilepton Final States Containing a ${{\mathit \tau}}$
 CHATRCHYAN 2012AX
JHEP 1211 067 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in the Dilepton Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
EPJ C71 1577 Measurement of the Top Quark-Pair Production Cross Section with ATLAS in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
PR D84 092004 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at 7 TeV in Lepton+Jets Events using ${\mathit {\mathit b}}$-Quark Jet Identification
JHEP 1107 049 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section and the Top Quark Mass in the Dilepton Channel in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
EPJ C71 1721 Measurement of the ${{\mathit t}}{{\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV using the Kinematic Properties of Events with Leptons and Jets
PL B695 424 First Measurement of the Cross Section for top-Quark Pair Production in Proton-Proton Collisions at $\sqrt {s }$ = 7 TeV