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

VALUE (GeV) DOCUMENT ID TECN  COMMENT
$\bf{ 172.4 \pm0.7}$ OUR AVERAGE
$171.1$ $\pm0.4$ $\pm0.9$ ${}^{+0.7}_{-0.3}$ 1
 2019 G
ATLS ${{\mathit \ell}}+\not E_T$+ ${}\geq{}$5 ${{\mathit j}}$ (2${{\mathit b}}-{{\mathit j}}$)
$173.2$ $\pm0.9$ $\pm0.8$ $\pm1.2$ 2
 2017 BC
ATLS ${{\mathit e}}$ + ${{\mathit \mu}}$ +${}\geq{}1{{\mathit b}}$ jets
$170.6$ $\pm2.7$ 3
 2017 W
CMS ${{\mathit \ell}}$ + ${}\geq{}$1j
$172.8$ $\pm1.1$ ${}^{+3.3}_{-3.1}$ 4
 2016 F
D0 ${{\mathit \ell}}{{\mathit \ell}}$ , ${{\mathit \ell}}$+jets channels
$173.8$ ${}^{+1.7}_{-1.8}$ 5
 2016 AW
CMS ${{\mathit e}}$ + ${{\mathit \mu}}$ + $\not E_T$ + ${}\geq{}$0j
$173.7$ ${}^{+2.3}_{-2.1}$ 6
 2015 BW
ATLS ${{\mathit \ell}}+\not E_T+{}\geq{}$5j (2${{\mathit b}}$-tag)
$172.9$ ${}^{+2.5}_{-2.6}$ 7
 2014 AY
ATLS ${{\mathit p}}{{\mathit p}}$ at $\sqrt {s }$ = 7, 8 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$176.7$ ${}^{+3.0}_{-2.8}$ 8
 2014
CMS ${{\mathit p}}{{\mathit p}}$ at $\sqrt {s }$ = 7 TeV
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  AABOUD 2017BC based on 20.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ data at $\sqrt {s }$ = 8 TeV. The pole mass is extracted from a fit of NLO predictions to eight single lepton and dilepton differential distributions, while simultaneously constraining uncertainties due to PDFs and QCD scales. The three reported uncertainties come from statistics, experimental systematics, and theoretical sources.
3  SIRUNYAN 2017W based on 2.2 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ data at $\sqrt {s }$ = 13 TeV. Events are categorized according to the jet multiplicity and the number of ${{\mathit b}}$-tagged jets. The pole mass is obtained from the inclusive cross section measurement and the NNLO prediction.
4  ABAZOV 2016F based on 9.7 fb${}^{-1}$ of data in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\sqrt {s }$ = 1.96 TeV. The result is obtained from the inclusive cross section measurement and the NNLO+NNLL prediction.
5  KHACHATRYAN 2016AW based on 5.0 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at 7 TeV and 19.7 fb${}^{-1}$ at 8 TeV. The 7 TeV data include those used in CHATRCHYAN 2014 . The result is obtained from the inclusive cross sections.
6  AAD 2015BW based on 4.6 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ data at $\sqrt {s }$ = 7 TeV. Uses normalized differential cross section for ${{\mathit t}}{{\overline{\mathit t}}}$ + 1 jet as a function of the inverse of the invariant mass of the ${{\mathit t}}{{\overline{\mathit t}}}$ + 1 jet system. The measured cross section is corrected to the parton level. Then a fit to the data using NLO + parton shower prediction is performed.
7  AAD 2014AY used ${\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}{)}$ for ${{\mathit e}}{{\mathit \mu}}$ events. The result is a combination of the measurements ${\mathit m}_{{{\mathit t}}}$ = $171.4$ $\pm2.6$ GeV based on 4.6 fb${}^{-1}$ of data at 7 TeV and ${\mathit m}_{{{\mathit t}}}$ = $174.1$ $\pm2.6$ GeV based on 20.3 fb${}^{-1}$ of data at 8 TeV.
8  CHATRCHYAN 2014 used ${\mathit \sigma (}$ ${{\mathit t}}{{\overline{\mathit t}}}{)}$ from ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 7 TeV measured in CHATRCHYAN 2012AX to obtain ${\mathit m}_{{{\mathit t}}}$(pole) for ${{\mathit \alpha}_{{s}}}({\mathit m}_{{{\mathit Z}}}$) = $0.1184$ $\pm0.0007$. The errors have been corrected in KHACHATRYAN 2014K.
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
 AABOUD 2017BC
EPJ C77 804 Measurement of Lepton Differential Distributions and the Top Quark Mass in ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ =8 TeV with the ATLAS Detector
 SIRUNYAN 2017W
JHEP 1709 051 Measurement of the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section using Events with One Lepton and at Least One Jet in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV
 ABAZOV 2016F
PR D94 092004 Measurement of the Inclusive ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV and Determination of the Top Quark Pole Mass
 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
JHEP 1510 121 Determination of the Top-Quark Pole Mass using ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ + 1-Jet Events Collected with the ATLAS Experiment in 7 TeV ${{\mathit p}}{{\mathit p}}$ Collisions
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
PL B728 496 Determination of the Top-Quark Pole Mass and Strong Coupling Constant from the ${\mathit {\mathit t}}{\mathit {\overline{\mathit t}}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV