A new observable to measure the top-quark mass at hadron colliders

  title={A new observable to measure the top-quark mass at hadron colliders},
  author={Simone Alioli and Pedro A. Movilla Fernandez and Juan Fuster and Adri'an Irles and S. Moch and Peter Uwer and Marcel Vos},
  journal={The European Physical Journal C},
A new method to measure the top-quark mass in high energetic hadron collisions is presented. We use theoretical predictions calculated at next-to-leading order accuracy in quantum chromodynamics to study the (normalized) differential distribution of the $t\bar{t} + 1\mbox{-jet}$ cross section with respect to its invariant mass $\sqrt{s_{t\bar{t} j}}$. The sensitivity of the method to the top-quark mass together with the impact of various theoretical and experimental uncertainties has been… 

Top-quark mass measurements using jet rates at LHC

This work presents a new method to measure the top-quark mass in hadronic collisions(1). The method uses the sensitivity of the t ¯ + 1-jet production on the top-quark mass. In detail we study the R

Top-quark mass extraction from $t\bar{t}j +X$ events at the LHC: theory predictions

Past work has proven the possibility of extracting the top-quark mass, one of the fundamental parameters of the Standard Model, from the comparison of theory predictions and experimental measurements

Top quark mass studies with tt¯j$$ t\overline{t}j $$ at the LHC

A bstractA precise measurement of the top quark mass, a fundamental parameter of the Standard Model, is among the most important goals of top quark studies at the Large Hadron Collider. Apart from

Determination of the top quark mass from leptonic observables

A bstractWe present a procedure for the determination of the mass of the top quark at the LHC based on leptonic observables in dilepton tt¯$$ t\overline{t} $$ events. Our approach utilises the shapes

Invariant-mass distribution of top-quark pairs and top-quark mass determination

We investigate the invariant-mass distribution of top-quark pairs near the $2m_t$ threshold, which has strong impact on the determination of the top-quark mass $m_t$. We show that higher-order

Uncertainties on the theoretical input for $t\bar{t}j$ experimental analyses at the LHC

The precise measurement of the top-quark mass constitutes one of the main goals of the LHC top-quark physics program. One possibility to extract this parameter uses the ρs distribution, which depends

Differential distributions for top-quark hadro-production with a running mass

We take a look at how the differential distributions for top-quark production are affected by changing to the running mass scheme. Specifically we consider the transverse momentum, rapidity and

Measurement of the top-quark mass in $$ t\overline{t} $$ + 1-jet events collected with the ATLAS detector in pp collisions at $$ \sqrt{s} $$ = 8 TeV

Abstract A determination of the top-quark mass is presented using 20.2 fb −1 of 8 TeV proton-proton collision data produced by the Large Hadron Collider and collected by the ATLAS experiment. The



Measuring the running top-quark mass

We present the first direct determination of the running top-quark mass based on the total cross section of top-quark pair production as measured at the Tevatron. Our theory prediction for the cross

Implications of CTEQ global analysis for collider observables

The latest CTEQ6.6 parton distributions, obtained by global analysis of hard-scattering data in the framework of general-mass perturbative QCD, are employed to study theoretical predictions and their

m(b)(m(z)) from jet production at the Z peak in the Cambridge algorithm

We consider the production of heavy quark jets at the $Z$-pole at the next-to-leading order (NLO) using the {\it Cambridge jet-algorithm}. We study the effects of the quark mass in two- and three-jet

Hadronic top-quark pair-production with one jet and parton showering

A bstractWe present a calculation of heavy-flavor production in hadronic collisions in association with one jet matched to parton shower Monte Carlo programs at next-to-leading order in perturbative

Non-perturbative QCD effects and the top mass at the Tevatron

We present a new, universally applicable toy model of colour reconnections in hadronic final states. The model is based on hadronising strings and has one free parameter. We next present an

Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: phenomenological studies for the Tevatron and the LHC

We report on the calculation of the next-to-leading order QCD corrections to the production of top–antitop-quark pairs in association with a hard jet at the Tevatron and at the LHC. Results for

Parton distributions for the LHC

AbstractWe present updated leading-order, next-to-leading order and next-to-next-to-leading order parton distribution functions (“MSTW 2008”) determined from global analysis of hard-scattering data