Measurement of the top quark mass in the $$t\bar{t}\rightarrow \text{ lepton+jets } $$ t t ¯ → lepton+jets and $$t\bar{t}\rightarrow \text{ dilepton } $$ t t ¯ → dilepton channels using $$\sqrt{s}=7$$ s = 7 $${\mathrm { TeV}}$$ TeV ATLAS data
G. AadCERN, 1211 Geneva 23, SwitzerlandB. AbbottCERN, 1211 Geneva 23, SwitzerlandJ. AbdallahCERN, 1211 Geneva 23, SwitzerlandO. AbdinovCERN, 1211 Geneva 23, SwitzerlandR. AbenCERN, 1211 Geneva 23, SwitzerlandM. AbolinsCERN, 1211 Geneva 23, SwitzerlandO. S. AbouZeidCERN, 1211 Geneva 23, SwitzerlandH. AbramowiczCERN, 1211 Geneva 23, SwitzerlandH. AbreuCERN, 1211 Geneva 23, SwitzerlandR. AbreuCERN, 1211 Geneva 23, SwitzerlandY. AbulaitiCERN, 1211 Geneva 23, SwitzerlandB. S. AcharyaCERN, 1211 Geneva 23, SwitzerlandL. AdamczykCERN, 1211 Geneva 23, SwitzerlandD. L. AdamsCERN, 1211 Geneva 23, SwitzerlandJahred AdelmanCERN, 1211 Geneva 23, SwitzerlandS. AdomeitCERN, 1211 Geneva 23, SwitzerlandTim AdyeCERN, 1211 Geneva 23, SwitzerlandTony AffolderCERN, 1211 Geneva 23, SwitzerlandT. Agatonović-JovinCERN, 1211 Geneva 23, SwitzerlandJ. A. Aguilar–SaavedraCERN, 1211 Geneva 23, SwitzerlandS. AhlenCERN, 1211 Geneva 23, SwitzerlandF. AhmadovCERN, 1211 Geneva 23, SwitzerlandGiulio AielliCERN, 1211 Geneva 23, SwitzerlandH. AkerstedtCERN, 1211 Geneva 23, SwitzerlandTorsten AkessonFysiska institutionen, Lunds universitet, Lund, SwedenG. AkimotoCERN, 1211 Geneva 23, SwitzerlandA. V. AkimovCERN, 1211 Geneva 23, SwitzerlandGian Luigi AlberghiCERN, 1211 Geneva 23, SwitzerlandJ. AlbertCERN, 1211 Geneva 23, SwitzerlandS. AlbrandCERN, 1211 Geneva 23, SwitzerlandM. J. Alconada VerziniCERN, 1211 Geneva 23, SwitzerlandMartin AleksaCERN, 1211 Geneva 23, SwitzerlandI. N. AleksandrovCERN, 1211 Geneva 23, SwitzerlandC. AlexaCERN, 1211 Geneva 23, SwitzerlandG. AlexanderCERN, 1211 Geneva 23, SwitzerlandT. AlexopoulosCERN, 1211 Geneva 23, SwitzerlandMuhammad AlhroobCERN, 1211 Geneva 23, SwitzerlandGianluca AlimontiCERN, 1211 Geneva 23, SwitzerlandL. AlioCERN, 1211 Geneva 23, SwitzerlandJ. AlisonCERN, 1211 Geneva 23, SwitzerlandS. P. AlkireCERN, 1211 Geneva 23, SwitzerlandBenedict AllbrookeCERN, 1211 Geneva 23, SwitzerlandPhilip Patrick AllportCERN, 1211 Geneva 23, SwitzerlandA. AloisioCERN, 1211 Geneva 23, SwitzerlandA. AlonsoCERN, 1211 Geneva 23, SwitzerlandF. AlonsoCERN, 1211 Geneva 23, SwitzerlandCristiano AlpigianiCERN, 1211 Geneva 23, SwitzerlandA. AltheimerCERN, 1211 Geneva 23, SwitzerlandB. Álvarez GonzálezCERN, 1211 Geneva 23, SwitzerlandD. Álvarez PiquerasCERN, 1211 Geneva 23, SwitzerlandMariagrazia AlviggiCERN, 1211 Geneva 23, SwitzerlandB. T. AmadioCERN, 1211 Geneva 23, SwitzerlandK. AmakoCERN, 1211 Geneva 23, SwitzerlandY. Amaral CoutinhoCERN, 1211 Geneva 23, SwitzerlandC. AmelungCERN, 1211 Geneva 23, SwitzerlandD. AmideiCERN, 1211 Geneva 23, SwitzerlandS. P. Amor Dos SantosDepartment of Physics, University of Coimbra, Coimbra, PortugalA. AmorimCERN, 1211 Geneva 23, SwitzerlandS. AmorosoCERN, 1211 Geneva 23, SwitzerlandN. AmramCERN, 1211 Geneva 23, SwitzerlandG. AmundsenCERN, 1211 Geneva 23, SwitzerlandChristos AnastopoulosCERN, 1211 Geneva 23, SwitzerlandL. S. AncuCERN, 1211 Geneva 23, SwitzerlandN. AndariCERN, 1211 Geneva 23, SwitzerlandT. AndeenCERN, 1211 Geneva 23, SwitzerlandC. F. AndersCERN, 1211 Geneva 23, SwitzerlandG. AndersCERN, 1211 Geneva 23, SwitzerlandJohn Kenneth AndersCERN, 1211 Geneva 23, SwitzerlandK. J. AndersonCERN, 1211 Geneva 23, SwitzerlandA. AndreazzaCERN, 1211 Geneva 23, SwitzerlandV. AndreiCERN, 1211 Geneva 23, SwitzerlandS. AngelidakisCERN, 1211 Geneva 23, SwitzerlandI. AngelozziCERN, 1211 Geneva 23, SwitzerlandP. AngerCERN, 1211 Geneva 23, SwitzerlandAaron AngeramiCERN, 1211 Geneva 23, SwitzerlandF. AnghinolfiCERN, 1211 Geneva 23, SwitzerlandAlexey AnisenkovCERN, 1211 Geneva 23, SwitzerlandN. AnjosCERN, 1211 Geneva 23, SwitzerlandAlberto AnnoviCERN, 1211 Geneva 23, SwitzerlandM. AntonelliCERN, 1211 Geneva 23, SwitzerlandA. AntonovCERN, 1211 Geneva 23, SwitzerlandJ. AntosCERN, 1211 Geneva 23, SwitzerlandFabio AnulliCERN, 1211 Geneva 23, SwitzerlandMasato AokiCERN, 1211 Geneva 23, SwitzerlandL. Aperio BellaCERN, 1211 Geneva 23, SwitzerlandG. ArabidzeCERN, 1211 Geneva 23, SwitzerlandY. AraiCERN, 1211 Geneva 23, SwitzerlandJ. P. AraqueCERN, 1211 Geneva 23, SwitzerlandA. T. H. ArceCERN, 1211 Geneva 23, SwitzerlandF. A. ArduhCERN, 1211 Geneva 23, SwitzerlandJ-F. ArguinCERN, 1211 Geneva 23, SwitzerlandS. ArgyropoulosCERN, 1211 Geneva 23, SwitzerlandM. ArikCERN, 1211 Geneva 23, SwitzerlandA. J. ArmbrusterCERN, 1211 Geneva 23, SwitzerlandO. ArnaezCERN, 1211 Geneva 23, SwitzerlandV. ArnalCERN, 1211 Geneva 23, SwitzerlandH. ArnoldCERN, 1211 Geneva 23, SwitzerlandM. ArratiaCERN, 1211 Geneva 23, SwitzerlandO. ArslanCERN, 1211 Geneva 23, SwitzerlandA. ArtamonovCERN, 1211 Geneva 23, Switzerland
2015en
ABI
Abstract
The top quark mass was measured in the channels t t lepton+jets and t t dilepton (lepton = e, ) based on ATLAS data recorded in 2011. The data were taken at the LHC with a proton-proton centre-of-mass energy of s = 7 TeV and correspond to an integrated luminosity of 4.6 fb -1 . The t t 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 t dilepton channel exploits a one-dimensional template method using the m 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 0.75(stat + JSF + bJSF) 1.02(syst) GeV, and 173.79 0.54(stat) 1.30(syst) GeV in the t t lepton+jets and t t dilepton channels, respectively. The combination of the two results yields m top = 172.99 0.48(stat) 0.78(syst) GeV, with a total uncertainty of 0.91 GeV.
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Citations and references
Cited by 20 references