Measurement of the top quark mass in the $t\bar t \to {\rm lepton+jets}$ and $t\bar t \to {\rm dilepton}$ channels using $\sqrt{s}=7$ TeV ATLAS data

G. Aad; S. Albrand; J. Brown; J. Collot; S. Crépé-Renaudin; P.A. Delsart; C. Gabaldon; M.H. Genest; J.Y. Hostachy; F. Ledroit-Guillon; A. Lleres; A. Lucotte; F. Malek; C. Monini; J. Stark; B. Trocmé; M. Wu; G. Rahal; S. Abdel Khalek; M.K. Ayoub; A. Bassalat; C. Becot; S. Binet; C. Bourdarios; D. Charfeddine; J.B. de Vivie De Regie; D. Delgove; L. Duflot; M. Escalier; L. Fayard; D. Fournier; E.L. Gkougkousis; J.-F. Grivaz; T. Guillemin; F. Hariri; S. Henrot-Versillé; J. Hrivnac; L. Iconomidou-Fayard; M. Kado; A. Lounis; N. Makovec; N. Morange; C. Nellist; L. Poggioli; P. Puzo; A. Renaud; D. Rousseau; G. Rybkin; A.C. Schaffer; E. Scifo; L. Serin; S. Simion; R. Tanaka; H.L. Tran; D. Zerwas; Z. Zhang; Y. Zhao; D. Boumediene; Emmanuel Busato; D. Calvet; S. Calvet; J. Donini; E. Dubreuil; N. Ghodbane; G. Gilles; Ph. Gris; H. Liao; R. Madar; D. Pallin; S.M. Romano Saez; C. Santoni; D. Simon; Timothée Theveneaux-Pelzer; F. Vazeille; L. Alio; M. Barbero; Y. Coadou; Sara Diglio; F. Djama; L. Feligioni; G.D. Hallewell; F. Hubaut; S.J. Kahn; E. B. F. G. Knoops; E. Le Guirriec; B. Li; J. Liu; D. Madaffari; K. Mochizuki; E. Monnier; S. Muanza; Y. Nagai; P. Pralavorio; A. Rozanov; T. Serre; M. Talby; R.E. Torresticse; E. Tiouchichine; S. Tisserant; J. Toth; Touchard F.; L. Vacavant; O. Duccu; E. Nagy; J. Gao; Z. Barnovska; N. Berger; M. Delmastro; L. Di Ciaccio; S. Elles; T. Hryn’ova; S. Jézéquel; I. Koletsou; R. Lafaye; J. Leveque; N. Massol; G. Sauvage; E. Sauvan; O. Simard; T. Todorov; I. Wingerter-Seez; E. Yatsenko

doi:10.1140/epjc/s10052-015-3544-0

Journal articles

Measurement of the top quark mass in the $t\bar t \to {\rm lepton+jets}$ and $t\bar t \to {\rm dilepton}$ channels using $\sqrt{s}=7$ TeV ATLAS data

G. Aad ¹ S. Albrand ² J. Brown ² J. Collot ² S. Crépé-Renaudin ² P.A. Delsart ² C. Gabaldon ² M.H. Genest ² J.Y. Hostachy ² F. Ledroit-Guillon ² A. Lleres ² A. Lucotte ² F. Malek ² C. Monini ² J. Stark ² B. Trocmé ² M. Wu ² G. Rahal ³ S. Abdel Khalek ⁴ M.K. Ayoub ⁴ A. Bassalat ⁴ C. Becot ⁴ S. Binet ⁴ C. Bourdarios ⁴ D. Charfeddine ⁴ J.B. de Vivie De Regie ⁴ D. Delgove ⁴ L. Duflot ⁴ M. Escalier ⁴ L. Fayard ⁴ D. Fournier ⁴ E.L. Gkougkousis ⁴ J.-F. Grivaz ⁴ T. Guillemin ⁴ F. Hariri ⁴ S. Henrot-Versillé ⁴ J. Hrivnac ⁴ L. Iconomidou-Fayard ⁴ M. Kado ⁴ A. Lounis ⁴ N. Makovec ⁴ N. Morange ⁴ C. Nellist ⁴ L. Poggioli ⁴ P. Puzo ⁴ A. Renaud ⁴ D. Rousseau ⁴ G. Rybkin ⁴ A.C. Schaffer ⁴ E. Scifo ⁴ L. Serin ⁴ S. Simion ⁴ R. Tanaka ⁴ H.L. Tran ⁴ D. Zerwas ⁴ Z. Zhang ⁴ Y. Zhao ⁴ D. Boumediene ⁵ Emmanuel Busato ⁵ D. Calvet ⁵ S. Calvet ⁵ J. Donini ⁵ E. Dubreuil ⁵ N. Ghodbane ⁵ G. Gilles ⁵ Ph. Gris ⁵ H. Liao ⁵ R. Madar ⁵ D. Pallin ⁵ S.M. Romano Saez ⁵ C. Santoni ⁵ D. Simon ⁵ Timothée Theveneaux-Pelzer ⁵ F. Vazeille ⁵ L. Alio ¹ M. Barbero ¹ Y. Coadou ¹ Sara Diglio ¹ F. Djama ¹ L. Feligioni ¹ G.D. Hallewell ¹ F. Hubaut ¹ S.J. Kahn ¹ E. B. F. G. Knoops ¹ E. Le Guirriec B. Li J. Liu ¹ D. Madaffari ¹ K. Mochizuki ¹ E. Monnier ¹ S. Muanza ¹ Y. Nagai ¹ P. Pralavorio ¹ A. Rozanov ¹ T. Serre ¹ M. Talby ¹ R.E. Torresticse ¹ E. Tiouchichine ¹ S. Tisserant ¹ J. Toth ¹ Touchard F. ¹ L. Vacavant ¹ O. Duccu ^{1, 6} E. Nagy ¹ J. Gao ¹ Z. Barnovska ⁷ N. Berger ⁷ M. Delmastro ⁷ L. Di Ciaccio ⁷ S. Elles ⁷ T. Hryn’ova ⁷ S. Jézéquel ⁷ I. Koletsou ⁷ R. Lafaye ⁷ J. Leveque ⁷ N. Massol ⁷ G. Sauvage ⁷ E. Sauvan ⁷ O. Simard ⁷ T. Todorov ⁷ I. Wingerter-Seez ⁷ E. Yatsenko ⁷

1 CPPM - Centre de Physique des Particules de Marseille

2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

3 CC-IN2P3 - Centre de Calcul de l'IN2P3

4 LAL - Laboratoire de l'Accélérateur Linéaire

5 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

6 NIPNE - Horia Hulubei National Institute of Physics and Nuclear Engineering

7 LAPP - Laboratoire d'Annecy de Physique des Particules

Abstract : The top quark mass was measured in the channels $t\bar{t} \to \mathrm{lepton+jets}$ and $t\bar{t} \to \mathrm{dilepton}$ (lepton=$e, \mu$) based on ATLAS data recorded in 2011. The data were taken at the LHC with a proton--proton centre-of-mass energy of $\sqrt{s}=7$ TeV and correspond to an integrated luminosity of 4.6fb$^{-1}$. The $t\bar{t} \to \mathrm{lepton+jets}$ analysis uses a three-dimensional template technique which determines the top quark mass together with a global jet energy scale factor (JSF), and a relative $b$-to-light-jet energy scale factor (bJSF), where the terms $b$-jets and light-jets refer to jets originating from $b$-quarks and $u, d, c, s$-quarks or gluons, respectively. The analysis of the $t\bar{t} \to \mathrm{dilepton}$ channel exploits a one-dimensional template method using the $m_{\ell b}$ observable, defined as the average invariant mass of the two lepton+$b$-jet pairs in each event. The top quark mass is measured to be $172.33\pm 0.75(\rm {stat}) \pm 1.02(\rm {syst})$ GeV, and $173.79 \pm 0.54({\rm stat}) \pm 1.30({\rm syst})$ GeV in the $t\bar{t} \to lepton+jets$ and $t\bar{t} \to dilepton$ channels, respectively. The combination of the two results yields $m_{\mathrm top} = 172.99 \pm 0.48({\rm stat}) \pm 0.78({\rm syst})$ GeV, with a total uncertainty of $0.91$ GeV.

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Journal articles

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Physics [physics] / High Energy Physics - Experiment [hep-ex]

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http://hal.in2p3.fr/in2p3-01133668
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Submitted on : Friday, March 20, 2015 - 8:31:02 AM
Last modification on : Thursday, December 16, 2021 - 2:11:19 PM

Measurement of the top quark mass in the $t\bar t \to {\rm lepton+jets}$ and $t\bar t \to {\rm dilepton}$ channels using $\sqrt{s}=7$ TeV ATLAS data

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Measurement of the top quark mass in the $t\bar t \to {\rm lepton+jets}$ and $t\bar t \to {\rm dilepton}$ channels using $\sqrt{s}=7$ TeV ATLAS data

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