# ${{\boldsymbol t}}$-QUARK MASS

We first list the direct measurements of the top quark mass which employ the event kinematics and then list the measurements which extract a top quark mass from the measured ${{\mathit t}}{{\overline{\mathit t}}}$ cross-section using theory calculations. A discussion of the definition of the top quark mass in these measurements can be found in the review The Top Quark.''
For earlier search limits see PDG 1996 , Physical Review D54 1 (1996). We no longer include a compilation of indirect top mass determinations from Standard Model Electroweak fits in the Listings (our last compilation can be found in the Listings of the 2007 partial update). For a discussion of current results see the reviews "The Top Quark" and "Electroweak Model and Constraints on New Physics."

# ${{\boldsymbol t}}$-Quark Mass from Cross-Section Measurements INSPIRE search

The top quark $\overline{\rm{}MS}$ or pole mass can be extracted from a measurement of ${\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}{)}$ by using theory calculations. We quote below the $\overline{\rm{}MS}$ mass. See the review The Top Quark'' and references therein for more information.
VALUE (GeV) DOCUMENT ID TECN  COMMENT
$\bf{ 162.5 {}^{+2.1}_{-1.5}}$ OUR AVERAGE
$162.9$ $\pm0.5$ $\pm1.0$ ${}^{+2.1}_{-1.2}$ 1
 2019 G
ATLS ${{\mathit \ell}}+\not E_T$+ ${}\geq{}$5 ${{\mathit j}}$ (2${{\mathit b}}-{{\mathit j}}$)
$160.0$ ${}^{+4.8}_{-4.3}$ 2
 2011 S
D0 ${\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}{)}$ + theory
• • • We do not use the following data for averages, fits, limits, etc. • • •
3
 2009 AG
D0 cross sects, theory + exp
4
 2009 R
D0 cross sects, theory + exp
1  AAD 2019G based on 20.2 fb${}^{-1}$ of data in ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV. Normalized ${{\mathit t}}{{\overline{\mathit t}}}$ + 1-jet differential cross section as a function of ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit j}}$ invariant mass is measured in the ${{\mathit \ell}}$ + jets mode. The unfolded parton-level distribution is compared with the NLO QCD prediction. The three errors are from statitics, systematics, and theory.
2  Based on 5.3 fb${}^{-1}$ in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\sqrt {s }$ = 1.96 TeV. ABAZOV 2011S uses the measured ${{\mathit t}}{{\overline{\mathit t}}}$ production cross section of $8.13$ ${}^{+1.02}_{-0.90}$ pb [ABAZOV 2011E] in the lepton plus jets channel to obtain the top quark $\overline{\rm{}MS}$ mass by using an approximate NNLO computation (MOCH 2008 , LANGENFELD 2009 ). The corresponding top quark pole mass is $167.5$ ${}^{+5.4}_{-4.9}$ GeV. A different theory calculation (AHRENS 2010 , AHRENS 2010A) is also used and yields m${}^{\overline{\rm{}MS}}_{t}$ = $154.5$ ${}^{+5.0}_{-4.3}$ GeV.
3  Based on 1 fb${}^{-1}$ of data at $\sqrt {s }$ = 1.96 TeV. Uses the ${{\mathit \ell}}$ + jets, ${{\mathit \ell}}{{\mathit \ell}}$ , and ${{\mathit \ell}}{{\mathit \tau}}$ + jets channels. ABAZOV 2009AG extract the pole mass of the top quark using two different calculations that yield $169.1$ ${}^{+5.9}_{-5.2}$ GeV (MOCH 2008 , LANGENFELD 2009 ) and $168.2$ ${}^{+5.9}_{-5.4}$ GeV (KIDONAKIS 2008 ).
4  Based on 1 fb${}^{-1}$ of data at $\sqrt {s }$ = 1.96 TeV. Uses the ${{\mathit \ell}}{{\mathit \ell}}$ and ${{\mathit \ell}}{{\mathit \tau}}$ + jets channels. ABAZOV 2009R extract the pole mass of the top quark using two different calculations that yield $173.3$ ${}^{+9.8}_{-8.6}$ GeV (MOCH 2008 , LANGENFELD 2009 ) and $171.5$ ${}^{+9.9}_{-8.8}$ GeV (CACCIARI 2008 ).
References:
JHEP 1911 150 Measurement of the top-quark mass in $t\bar{t}+1$-jet events collected with the ATLAS detector in $pp$ collisions at $\sqrt{s}=8$ TeV
PL B703 422 Determination of the Pole and $\overline{\rm{}MS}$ Masses of the top Quark from the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Cross Section
PR D80 071102 Combination of ${{\mathit t}}{{\overline{\mathit t}}}$ Cross Section Measurements and Constraints on the Mass of the Top Quark and Its Decays into Charged Higgs Bosons
PL B679 177 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section and Top Quark Mass Extraction using Dilepton Events in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions