- Main
Measurement of the top-quark mass in tt¯ + 1-jet events collected with the ATLAS detector in pp collisions at √s = 8 TeV
- Author(s): Aad, G;
- Abbott, B;
- Abbott, DC;
- Abdinov, O;
- Abed Abud, A;
- Abeling, K;
- Abhayasinghe, DK;
- Abidi, SH;
- AbouZeid, OS;
- Abraham, NL;
- Abramowicz, H;
- Abreu, H;
- Abulaiti, Y;
- Acharya, BS;
- Achkar, B;
- Adachi, S;
- Adam, L;
- Adam Bourdarios, C;
- Adamczyk, L;
- Adamek, L;
- Adelman, J;
- Adersberger, M;
- Adiguzel, A;
- Adorni, S;
- Adye, T;
- Affolder, AA;
- Afik, Y;
- Agapopoulou, C;
- Agaras, MN;
- Aggarwal, A;
- Agheorghiesei, C;
- Aguilar-Saavedra, JA;
- Ahmadov, F;
- Ahmed, WS;
- Ai, X;
- Aielli, G;
- Akatsuka, S;
- Akesson, TPA;
- Akilli, E;
- Akimov, AV;
- Al Khoury, K;
- Alberghi, GL;
- Albert, J;
- Alconada Verzini, MJ;
- Alderweireldt, S;
- Aleksa, M;
- Aleksandrov, IN;
- Alexa, C;
- Alexandre, D;
- Alexopoulos, T;
- Alfonsi, A;
- Alhroob, M;
- Ali, B;
- Alimonti, G;
- Alison, J;
- Alkire, SP;
- Allaire, C;
- Allbrooke, BMM;
- Allen, BW;
- Allport, PP;
- Aloisio, A;
- Alonso, A;
- Alonso, F;
- Alpigiani, C;
- Alshehri, AA;
- Alvarez Estevez, M;
- Álvarez Piqueras, D;
- Alviggi, MG;
- Amaral Coutinho, Y;
- Ambler, A;
- Ambroz, L;
- Amelung, C;
- Amidei, D;
- Amor Dos Santos, SP;
- Amoroso, S;
- Amrouche, CS;
- An, F;
- Anastopoulos, C;
- Andari, N;
- Andeen, T;
- Anders, CF;
- Anders, JK;
- Andreazza, A;
- Andrei, V;
- Anelli, CR;
- Angelidakis, S;
- Angerami, A;
- Anisenkov, AV;
- Annovi, A;
- Antel, C;
- Anthony, MT;
- Antonelli, M;
- Antrim, DJA;
- Anulli, F;
- Aoki, M;
- Aparisi Pozo, JA;
- Bella, LA;
- Arabidze, G;
- Araque, JP;
- Araujo Ferraz, V
- et al.
Published Web Location
https://doi.org/10.1007/JHEP11(2019)150Abstract
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 normalised differential cross section of top-quark pair production in association with an energetic jet is measured in the lepton+jets final state and unfolded to parton and particle levels. The unfolded distribution at parton level can be described using next-to-leading-order QCD predictions in terms of either the top-quark pole mass or the running mass as defined in the (modified) minimal subtraction scheme. A comparison between the experimental distribution and the theoretical prediction allows the top-quark mass to be extracted in the two schemes. The value obtained for the pole-mass scheme is: mtpole=171.1±0.4(stat)±0.9(syst)−0.3+0.7(theo)GeV The extracted value in the running-mass scheme is: mt(mt)=162.9±0.5(stat)±1.0(syst)−1.2+2.1(theo)GeV. The results for the top-quark mass using the two schemes are consistent, when translated from one scheme to the other. [Figure not available: see fulltext.]
Main Content
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