Bibcode
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; De Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Caillol, C.; Clerbaux, B.; De Lentdecker, G.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; Mccartin, J.; Ocampo Rios, A. A.; Poyraz, D.; Ryckbosch, D.; Salva, S.; Schöfbeck, R.; Sigamani, M. et al.
Referencia bibliográfica
Physical Review D, Volume 93, Issue 9, id.092006
Advertised on:
5
2016
Revista
Número de citas
11
Número de citas referidas
10
Descripción
A novel technique for measuring the mass of the top quark that uses only
the kinematic properties of its charged decay products is presented. Top
quark pair events with final states with one or two charged leptons and
hadronic jets are selected from the data set of 8 TeV proton-proton
collisions, corresponding to an integrated luminosity of 19.7
fb-1 . By reconstructing secondary vertices inside the
selected jets and computing the invariant mass of the system formed by
the secondary vertex and an isolated lepton, an observable is
constructed that is sensitive to the top quark mass that is expected to
be robust against the energy scale of hadronic jets. The main
theoretical systematic uncertainties, concerning the modeling of the
fragmentation and hadronization of b quarks and the reconstruction of
secondary vertices from the decays of b hadrons, are studied. A top
quark mass of 173.68 ±0.20 (stat)-0.97
+1.58(syst ) GeV is measured. The overall systematic uncertainty
is dominated by the uncertainty in the b quark fragmentation and the
modeling of kinematic properties of the top quark.