${{\mathit t}}{{\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV

INSPIRE   PDGID:
Q007TX
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. • •
$7.26$ $\pm0.13$ ${}^{+0.57}_{-0.50}$ 1
ABAZOV
2016F
D0 ${{\mathit \ell}}{{\mathit \ell}}$, ${{\mathit \ell}}$+jets channels
$8.1$ $\pm2.1$ 2
AALTONEN
2014A
CDF ${{\mathit \ell}}$ + ${{\mathit \tau}_{{{h}}}}$ + ${}\geq{}$ 2jets (${}\geq{}1{{\mathit b}}$-tag)
$7.60$ $\pm0.20$ $\pm0.29$ $\pm0.21$ 3
AALTONEN
2014H
TEVA ${{\mathit \ell}}{{\mathit \ell}}$, ${{\mathit \ell}}$+jets, all-jets channels
$8.0$ $\pm0.7$ $\pm0.6$ $\pm0.5$ 4
ABAZOV
2014K
D0 ${{\mathit \ell}}+\not E_T+{}\geq{}$4 jets (${}\geq{}1{{\mathit b}}$-tag)
$7.09$ $\pm0.84$ 5
AALTONEN
2013AB
CDF ${{\mathit \ell}}{{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$2 jets
$7.5$ $\pm1.0$ 6
AALTONEN
2013G
CDF ${{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$ 3jets (${}\geq{}1{{\mathit b}}$-tag)
$8.8$ $\pm3.3$ $\pm2.2$ 7
AALTONEN
2012AL
CDF ${{\mathit \tau}_{{{h}}}}$ + $\not E_T$ +4j (${}\geq{}1{{\mathit b}}$)
$8.5$ $\pm0.6$ $\pm0.7$ 8
AALTONEN
2011D
CDF ${{\mathit \ell}}$ + $\not E_T$ + jets (${}\geq{}1{{\mathit b}}$-tag)
$7.64$ $\pm0.57$ $\pm0.45$ 9
AALTONEN
2011W
CDF ${{\mathit \ell}}$ + $\not E_T$ + jets (${}\geq{}1{{\mathit b}}$-tag)
$7.99$ $\pm0.55$ $\pm0.76$ $\pm0.46$ 10
AALTONEN
2011Y
CDF $\not E_T$ + ${}\geq{}$4jets (0,1,2 ${{\mathit b}}$-tag)
$7.78$ ${}^{+0.77}_{-0.64}$ 11
ABAZOV
2011E
D0 ${{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$2 jets
$7.56$ ${}^{+0.63}_{-0.56}$ 12
ABAZOV
2011Z
D0 Combination
$6.27$ $\pm0.73$ $\pm0.63$ $\pm0.39$ 13
AALTONEN
2010AA
CDF Repl. by AALTONEN 2013AB
$7.2$ $\pm0.5$ $\pm1.0$ $\pm0.4$ 14
AALTONEN
2010E
CDF ${}\geq{}$6 jets, vtx ${{\mathit b}}$-tag
$7.8$ $\pm2.4$ $\pm1.6$ $\pm0.5$ 15
AALTONEN
2010V
CDF ${{\mathit \ell}}$ +${}\geq{}$3 jets, soft-${{\mathit e}}{{\mathit b}}$-tag
$7.70$ $\pm0.52$ 16
AALTONEN
2010W
CDF ${{\mathit \ell}}$ + $\not E_T$ + ${}\geq{}$3 jets + ${{\mathit b}}$-tag, norm. to ${\mathit \sigma (}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \ell}}{)}_{TH}$
$6.9$ $\pm2.0$ 17
ABAZOV
2010I
D0 ${}\geq{}$6 jets with 2 ${{\mathit b}}$-tags
$6.9$ $\pm1.2$ ${}^{+0.8}_{-0.7}$ $\pm0.4$ 18
ABAZOV
2010Q
D0 ${{\mathit \tau}_{{{h}}}}$ + jets
$9.6$ $\pm1.2$ ${}^{+0.6}_{-0.5}$ $\pm0.6$ 19
AALTONEN
2009AD
CDF ${{\mathit \ell}}{{\mathit \ell}}$ + $\not E_T$ $/$ vtx ${{\mathit b}}$-tag
$9.1$ $\pm1.1$ ${}^{+1.0}_{-0.9}$ $\pm0.6$ 20
AALTONEN
2009H
CDF ${{\mathit \ell}}$ + ${}\geq{}$3 jets+$\not E_T$/soft ${{\mathit \mu}}{{\mathit b}}$-tag
$8.18$ ${}^{+0.98}_{-0.87}$ 21
ABAZOV
2009AG
D0 ${{\mathit \ell}}$ + jets, ${{\mathit \ell}}{{\mathit \ell}}$ and ${{\mathit \ell}}{{\mathit \tau}}$ + jets
$7.5$ $\pm1.0$ ${}^{+0.7}_{-0.6}$ ${}^{+0.6}_{-0.5}$ 22
ABAZOV
2009R
D0 ${{\mathit \ell}}{{\mathit \ell}}$ and ${{\mathit \ell}}{{\mathit \tau}}$ + jets
$8.18$ ${}^{+0.90}_{-0.84}$ $\pm0.50$ 23
ABAZOV
2008M
D0 ${{\mathit \ell}}$ + n jets with 0,1,2 ${{\mathit b}}$-tag
$7.62$ $\pm0.85$ 24
ABAZOV
2008N
D0 ${{\mathit \ell}}$ + n jets + ${{\mathit b}}$-tag or kinematics
$8.5$ ${}^{+2.7}_{-2.2}$ 25
ABULENCIA
2008
CDF ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$, ${{\mathit \mu}}$)
$8.3$ $\pm1.0$ ${}^{+2.0}_{-1.5}$ $\pm0.5$ 26
AALTONEN
2007D
CDF ${}\geq{}$6 jets, vtx ${{\mathit b}}$-tag
$7.4$ $\pm1.4$ $\pm1.0$ 27
ABAZOV
2007O
D0 ${{\mathit \ell}}{{\mathit \ell}}$ + jets, vtx ${{\mathit b}}$-tag
$4.5$ ${}^{+2.0}_{-1.9}$ ${}^{+1.4}_{-1.1}$ $\pm0.3$ 28
ABAZOV
2007P
D0 ${}\geq{}$6 jets, vtx ${{\mathit b}}$-tag
$6.4$ ${}^{+1.3}_{-1.2}$ $\pm0.7$ $\pm0.4$ 29
ABAZOV
2007R
D0 ${{\mathit \ell}}$ + ${}\geq{}$4 jets
$6.6$ $\pm0.9$ $\pm0.4$ 30
ABAZOV
2006X
D0 ${{\mathit \ell}}$ + jets, vtx ${{\mathit b}}$-tag
$8.7$ $\pm0.9$ ${}^{+1.1}_{-0.9}$ 31
ABULENCIA
2006Z
CDF ${{\mathit \ell}}$ + jets, vtx ${{\mathit b}}$-tag
$5.8$ $\pm1.2$ ${}^{+0.9}_{-0.7}$ 32
ABULENCIA,A
2006C
CDF missing $\mathit E_{T}$ + jets, vtx ${{\mathit b}}$-tag
$7.5$ $\pm2.1$ ${}^{+3.3}_{-2.2}$ ${}^{+0.5}_{-0.4}$ 33
ABULENCIA,A
2006E
CDF $6 - 8$ jets, ${{\mathit b}}$-tag
$8.9$ $\pm1.0$ ${}^{+1.1}_{-1.0}$ 34
ABULENCIA,A
2006F
CDF ${{\mathit \ell}}$ +${}\geq{}$3 jets, ${{\mathit b}}$-tag
$8.6$ ${}^{+1.6}_{-1.5}$ $\pm0.6$ 35
ABAZOV
2005Q
D0 ${{\mathit \ell}}$ + n jets
$8.6 {}^{+3.2}_{-2.7}\pm0.6$ 36
ABAZOV
2005R
D0 di-lepton + n jets
$6.7$ ${}^{+1.4}_{-1.3}$ ${}^{+1.6}_{-1.1}$ $\pm0.4$ 37
ABAZOV
2005X
D0 ${{\mathit \ell}}$ + jets $/$ kinematics
$5.3$ $\pm3.3$ ${}^{+1.3}_{-1.0}$ 38
ACOSTA
2005S
CDF ${{\mathit \ell}}$ + jets $/$ soft ${{\mathit \mu}}{{\mathit b}}$-tag
$6.6$ $\pm1.1$ $\pm1.5$ 39
ACOSTA
2005T
CDF ${{\mathit \ell}}$ + jets $/$ kinematics
$6.0$ ${}^{+1.5}_{-1.6}$ ${}^{+1.2}_{-1.3}$ 40
ACOSTA
2005U
CDF ${{\mathit \ell}}$ + jets/kinematics + vtx ${{\mathit b}}$-tag
$5.6$ ${}^{+1.2}_{-1.1}$ ${}^{+0.9}_{-0.6}$ 41
ACOSTA
2005V
CDF ${{\mathit \ell}}$ + n jets
$7.0$ ${}^{+2.4}_{-2.1}$ ${}^{+1.6}_{-1.1}$ $\pm0.4$ 42
ACOSTA
2004I
CDF di-lepton + jets + missing ET
1  ABAZOV 2016F based on 9.7 fb${}^{-1}$ of data. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV, and the ${\mathit m}_{{{\mathit t}}}$ dependence is shown in Table V and Fig. 9. The result agrees with the NNLO+NNLL SM prediction of $7.35$ ${}^{+0.23}_{-0.27}$ pb.
2  Based on 9 fb${}^{-1}$ of data. The measurement is in the channel ${{\mathit t}}$ ${{\overline{\mathit t}}}$ $\rightarrow$ ( ${{\mathit b}}{{\mathit \ell}}{{\mathit \nu}}$) ( ${{\mathit b}}{{\mathit \tau}}{{\mathit \nu}}$), where ${{\mathit \tau}}$ decays into hadrons (${{\mathit \tau}_{{{h}}}}$), and ${{\mathit \ell}}$ (${{\mathit e}}$ or ${{\mathit \mu}}$) include ${{\mathit \ell}}$ from ${{\mathit \tau}}$ decays (${{\mathit \tau}_{{{{{\mathit \ell}}}}}}$). The result is for ${\mathit m}_{{{\mathit t}}}$ = 173 GeV.
3  Based on 8.8 fb${}^{-1}$ of data. Combination of CDF and D0 measurements given, respectively, by ${\mathit \sigma (}{{\mathit t}}{{\overline{\mathit t}}}$; CDF${)}$ = $7.63$ $\pm0.31$ $\pm0.36$ $\pm0.16$ pb, ${\mathit \sigma (}{{\mathit t}}{{\overline{\mathit t}}}$; D0${)}$ = $7.56$ $\pm0.20$ $\pm0.32$ $\pm0.46$ pb. All the results are for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV. The ${\mathit m}_{{{\mathit t}}}$ dependence of the mean value is parametrized in eq. (1) and shown in Fig. 2.
4  Based on 9.7 fb${}^{-1}$ of data. Differential cross sections with respect to , $\vert {{\mathit y}}$(top)$\vert $, $\mathit E_{T}$(top) are shown in Figs. 9, 10, 11, respectively, and are compared to the predictions of MC models.
5  Based on 8.8 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\sqrt {s }$ = 1.96 TeV.
6  Based on 8.7 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\sqrt {s }$ = 1.96 TeV. Measure the ${{\mathit t}}{{\overline{\mathit t}}}$ cross section simultaneously with the fraction of ${{\mathit t}}$ $\rightarrow$ ${{\mathit W}}{{\mathit b}}$ decays. The correlation coefficient between those two measurements is $-0.434$. Assume unitarity of the 3${\times }$3 CKM matrix and set $\vert \mathit V_{\mathit tb}\vert $ $>$ 0.89 at 95$\%$ CL.
7  Based on 2.2 fb${}^{-1}$ of data in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at 1.96 TeV. The result assumes the acceptance for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV.
8  Based on 1.12 fb${}^{-1}$ and assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV, where the cross section changes by $\pm0.1$ pb for every $\mp{}$1 GeV shift in ${\mathit m}_{{{\mathit t}}}$. AALTONEN 2011D fits simultaneously the ${{\mathit t}}{{\overline{\mathit t}}}$ production cross section and the ${{\mathit b}}$-tagging efficiency and find improvements in both measurements.
9  Based on 2.7 fb${}^{-1}$. The first error is from statistics and systematics, the second is from luminosity. The result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. AALTONEN 2011W fits simultaneously a jet flavor discriminator between ${{\mathit b}}$-, ${{\mathit c}}$-, and light-quarks, and find significant reduction in the systematic error.
10  Based on 2.2 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV. AALTONEN 2011Y selects multi-jet events with large $\not E_T$, and vetoes identified electrons and muons.
11  Based on 5.3 fb${}^{-1}$. The error is statistical + systematic + luminosity combined. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV. The results for other ${\mathit m}_{{{\mathit t}}}$ values are given in Table XII and eq.(10) of ABAZOV 2011E.
12  Combination of a dilepton measurement presented in ABAZOV 2011Z (based on 5.4 fb${}^{-1}$), which yields $7.36$ ${}^{+0.90}_{-0.79}$ (stat+syst) pb, and the lepton + jets measurement of ABAZOV 2011E. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV. The results for other ${\mathit m}_{{{\mathit t}}}$ values is given by eq.(5) of ABAZOV 2011A.
13  Based on 2.8 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
14  Based on 2.9 fb${}^{-1}$. Result is obtained from the fraction of signal events in the top quark mass measurement in the all hadronic decay channel.
15  Based on 1.7 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. AALTONEN 2010V uses soft electrons from ${{\mathit b}}$-hadron decays to suppress ${{\mathit W}}$+jets background events.
16  Based on 4.6 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV. The ratio ${\mathit \sigma (}$ ${{\mathit t}}$ ${{\overline{\mathit t}}}$ $\rightarrow$ ${{\mathit \ell}}$+jets${)}$ $/$ ${\mathit \sigma (}$ ${{\mathit Z}}$ $/$ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \ell}}{)}$ is measured and then multiplied by the theoretical ${{\mathit Z}}$ $/$ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \ell}}$ cross section of ${\mathit \sigma (}$ ${{\mathit Z}}$ $/$ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \ell}}{)}$ = $251.3$ $\pm5.0$ pb, which is free from the luminosity error.
17  Based on 1 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. $7.9$ $\pm2.3$ pb is found for ${\mathit m}_{{{\mathit t}}}$ = 170$~$GeV. ABAZOV 2010I uses a likelihood discriminant to separate signal from background, where the background model was created from lower jet-multiplicity data.
18  Based on 1 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV. For ${\mathit m}_{{{\mathit t}}}$ = 175 GeV, the result is $6.3$ ${}^{+1.2}_{-1.1}$(stat)$\pm0.7$(syst)$\pm0.4$(lumi)$~$pb. Cross section of ${{\mathit t}}{{\overline{\mathit t}}}$ production has been measured in the ${{\mathit t}}$ ${{\overline{\mathit t}}}$ $\rightarrow$ ${{\mathit \tau}_{{{h}}}}{+}$ jets topology, where ${{\mathit \tau}_{{{h}}}}$ denotes hadronically decaying ${{\mathit \tau}}$ leptons. The result for the cross section times the branching ratio is ${\mathit \sigma (}{{\mathit t}}{{\overline{\mathit t}}}{)}$ $\cdot{}$ B( ${{\mathit t}}$ ${{\overline{\mathit t}}}$ $\rightarrow$ ${{\mathit \tau}_{{{h}}}}{+}$ jets) = $0.60$ ${}^{+0.23}_{-0.22}{}^{+0.15}_{-0.14}$ $\pm0.04~$pb for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV.
19  Based on 1.1 fb${}^{-1}$. The result is for B( ${{\mathit W}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \nu}}$) = 10.8$\%$ and ${\mathit m}_{{{\mathit t}}}$ = 175 GeV; the mean value is 9.8 for ${\mathit m}_{{{\mathit t}}}$ = 172.5 GeV and 10.1 for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV. AALTONEN 2009AD used high $p_T$ ${{\mathit e}}$ or ${{\mathit \mu}}$ with an isolated track to select ${{\mathit t}}{{\overline{\mathit t}}}$ decays into dileptons including ${{\mathit \ell}}$ = ${{\mathit \tau}}$. The result is based on the candidate event samples with and without vertex ${{\mathit b}}$-tag.
20  Based on 2 fb${}^{-1}$. The result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV; the mean value is 3$\%$ higher for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV and 4$\%$ lower for ${\mathit m}_{{{\mathit t}}}$ = 180 GeV.
21  Result is based on 1 fb${}^{-1}$ of data. The result is for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV, and the mean value decreases with increasing ${\mathit m}_{{{\mathit t}}}$; see their Fig. 2. The result is obtained after combining ${{\mathit \ell}}$ + jets, ${{\mathit \ell}}{{\mathit \ell}}$, and ${{\mathit \ell}}{{\mathit \tau}}$ final states, and the ratios of the extracted cross sections are R${}^{{{\mathit \ell}} {{\mathit \ell}} / {{\mathit \ell}} {{\mathit j}}}$ = $0.86$ ${}^{+0.19}_{-0.17}$ and R${}^{{{\mathit \ell}} {{\mathit \tau}} / {{\mathit \ell}} {{\mathit \ell}} {{\mathit \ell}} {{\mathit j}}}$ = $0.97$ ${}^{+0.32}_{-0.29}$, consistent with the SM expectation of R = 1. This leads to the upper bound of B( ${{\mathit t}}$ $\rightarrow$ ${{\mathit b}}{{\mathit H}^{+}}$) as a function of ${\mathit m}_{{{\mathit H}^{+}}}$. Results are shown in their Fig. 1 for B( ${{\mathit H}^{+}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit \nu}}$) = 1 and B( ${{\mathit H}^{+}}$ ${{\overline{\mathit s}}}$) = 1 cases. Comparison of the ${\mathit m}_{{{\mathit t}}}$ dependence of the extracted cross section and a partial NNLO prediction gives ${\mathit m}_{{{\mathit t}}}$ = $169.1$ ${}^{+5.9}_{-5.2}$ GeV.
22  Result is based on 1 fb${}^{-1}$ of data. The result is for ${\mathit m}_{{{\mathit t}}}$ = 170 GeV, and the mean value changes by $-0.07$ [${\mathit m}_{{{\mathit t}}}$(GeV)$−$170] pb near the reference ${\mathit m}_{{{\mathit t}}}$ value. Comparison of the ${\mathit m}_{{{\mathit t}}}$ dependence of the extracted cross section and a partial NNLO QCD prediction gives ${\mathit m}_{{{\mathit t}}}$ = $171.5$ ${}^{+9.9}_{-8.8}$ GeV. The ${{\mathit \ell}}{{\mathit \tau}}$ channel alone gives $7.6$ ${}^{+4.9}_{-4.3}{}^{+3.5}_{-3.4}{}^{+1.4}_{-0.9}$ pb and the ${{\mathit \ell}}{{\mathit \ell}}$ channel gives $7.5$ ${}^{+1.2}_{-1.1}{}^{+0.7}_{-0.6}{}^{+0.7}_{-0.5}$ pb.
23  Result is based on 0.9 fb${}^{-1}$ of data. The first error is from stat + syst, while the latter error is from luminosity. The result is for ${\mathit m}_{{{\mathit t}}}$=175 GeV, and the mean value changes by $-0.09$ pb$\cdot{}[{\mathit m}_{{{\mathit t}}}$(GeV)$−$175].
24  Result is based on 0.9 fb${}^{-1}$ of data. The cross section is obtained from the ${{\mathit \ell}}$ + ${}\geq{}3~$jet event rates with 1 or 2 ${{\mathit b}}$-tag, and also from the kinematical likelihood analysis of the ${{\mathit \ell}}~$+ 3, 4 jet events. The result is for ${\mathit m}_{{{\mathit t}}}$= 172.6 GeV, and its ${\mathit m}_{{{\mathit t}}}$ dependence shown in Fig. 3 leads to the constraint ${\mathit m}_{{{\mathit t}}}$ = $170$ $\pm7$ GeV when compared to the SM prediction.
25  Result is based on 360 pb${}^{-1}$ of data. Events with high $p_T$ oppositely charged dileptons ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ (${{\mathit \ell}}$ = ${{\mathit e}}$, ${{\mathit \mu}}$) are used to obtain cross sections for ${{\mathit t}}{{\overline{\mathit t}}}$, ${{\mathit W}^{+}}{{\mathit W}^{-}}$, and ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ production processes simultaneously. The other cross sections are given in Table IV.
26  Based on 1.02 fb${}^{-1}$ of data. Result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. Secondary vertex ${{\mathit b}}$-tag and neural network selections are used to achieve a signal-to-background ratio of about 1/2.
27  Based on 425 pb${}^{-1}$ of data. Result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. For ${\mathit m}_{{{\mathit t}}}$ = 170.9 GeV, $7.8$ $\pm1.8$(stat + syst) pb is obtained.
28  Based on $405$ $\pm25$ pb${}^{-1}$ of data. Result is for ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. The last error is for luminosity. Secondary vertex ${{\mathit b}}$-tag and neural network are used to separate the signal events from the background.
29  Based on 425 pb${}^{-1}$ of data. Assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
30  Based on $\sim{}$ 425 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 175 GeV. The first error is combined statistical and systematic, the second one is luminosity.
31  Based on $\sim{}$318 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 178 GeV. The cross section changes by $\pm0.08$ pb for each $\mp{}$ GeV change in the assumed ${\mathit m}_{{{\mathit t}}}$. Result is for at least one ${{\mathit b}}$-tag. For at least two ${{\mathit b}}$-tagged jets, ${{\mathit t}}{{\overline{\mathit t}}}$ signal of significance greater than 5$\sigma $ is found, and the cross section is $10.1$ ${}^{+1.6}_{-1.4}{}^{+2.0}_{-1.3}$ pb for ${\mathit m}_{{{\mathit t}}}$ = 178 GeV.
32  Based on $\sim{}$311 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 178 GeV. For ${\mathit m}_{{{\mathit t}}}$ = 175 GeV, the result is $6.0$ $\pm1.2$ ${}^{+0.9}_{-0.7}$. This is the first CDF measurement without lepton identification, and hence it has sensitivity to the ${{\mathit W}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit \nu}}$ mode.
33  ABULENCIA,A 2006E measures the ${{\mathit t}}{{\overline{\mathit t}}}$ production cross section in the all hadronic decay mode by selecting events with 6 to 8 jets and at least one b-jet. S/B = 1/5 has been achieved. Based on 311 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 178 GeV.
34  Based on $\sim{}$318 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 178 GeV. Result is for at least one ${{\mathit b}}$-tag. For at least two ${{\mathit b}}$-tagged jets, the cross section is $11.1$ ${}^{+2.3}_{-1.9}{}^{+2.5}_{-1.9}~$pb.
35  ABAZOV 2005Q measures the top-quark pair production cross section with $\sim{}$230 pb${}^{-1}$ of data, based on the analysis of ${{\mathit W}}$ plus n-jet events where W decays into ${{\mathit e}}$ or ${{\mathit \mu}}$ plus neutrino, and at least one of the jets is ${{\mathit b}}$-jet like. The first error is statistical and systematic, and the second accounts for the luminosity uncertainty. The result assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV; the mean value changes by (175$−{\mathit m}_{{{\mathit t}}}$(GeV)) ${\times }$ 0.06$~$pb in the mass range 160 to 190 GeV.
36  ABAZOV 2005R measures the top-quark pair production cross section with $224 - 243$ pb${}^{-1}$ of data, based on the analysis of events with two charged leptons in the final state. The result assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV; the mean value changes by (175$−{\mathit m}_{{{\mathit t}}}$(GeV)) ${\times }$ 0.08$~$pb in the mass range 160 to 190 GeV.
37  Based on 230 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
38  Based on 194 pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
39  Based on $194$ $\pm11$ pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
40  Based on $162$ $\pm10$ pb${}^{-1}$. Assuming ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
41  ACOSTA 2005V measures the top-quark pair production cross section with $\sim{}$162 pb${}^{-1}$ data, based on the analysis of ${{\mathit W}}$ plus n-jet events where ${{\mathit W}}$ decays into ${{\mathit e}}$ or ${{\mathit \mu}}$ plus neutrino, and at least one of the jets is ${{\mathit b}}$-jet like. Assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
42  ACOSTA 2004I measures the top-quark pair production cross section with $197$ $\pm12$ pb${}^{-1}$ data, based on the analysis of events with two charged leptons in the final state. Assumes ${\mathit m}_{{{\mathit t}}}$ = 175 GeV.
References