${{\mathit t}}$-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."

${{\mathit t}}$-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.

Q007TP2

VALUE (GeV)

DOCUMENT ID

TECN

COMMENT

$\bf{ 162.5 {}^{+2.1}_{-1.5}}$

OUR AVERAGE

$162.9$ $\pm0.5$ $\pm1.0$ ${}^{+2.1}_{-1.2}$

AAD

2019

ATLS

${{\mathit \ell}}+\not E_T$+ ${}\geq{}$5 ${{\mathit j}}$ (2${{\mathit b}}-{{\mathit j}}$)

$160.0$ ${}^{+4.8}_{-4.3}$

ABAZOV

2011

${\mathit \sigma (}{{\mathit t}}{{\overline{\mathit t}}}{)}$ + theory

• • • We do not use the following data for averages, fits, limits, etc. • • •

ABAZOV

2009

cross sects, theory + exp

⁴

ABAZOV

2009

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:

AAD

2019G

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

ABAZOV

2011S

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

ABAZOV

2009AG

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

ABAZOV

2009R

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