Bibcode
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.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Waltenberger, W.; Wulz, C.-E.; Dvornikov, O.; Makarenko, V.; Mossolov, V.; Suarez Gonzalez, J.; Zykunov, V.; Shumeiko, N.; Alderweireldt, S.; De Wolf, E. A.; Janssen, X.; Lauwers, J.; 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.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Salva, S.; Schöfbeck, R.; Tytgat, M.; Van Driessche, W.; Yazgan, E.; Zaganidis, N.; Bakhshiansohi, H.; Bondu, O.; Brochet, S.; Bruno, G.; Caudron, A. et al.
Referencia bibliográfica
Physical Review D, Volume 96, Issue 3, id.032002
Advertised on:
8
2017
Revista
Número de citas
11
Número de citas referidas
11
Descripción
A measurement of the top quark mass (Mt) in the dileptonic t
t ¯ decay channel is performed using data from proton-proton
collisions at a center-of-mass energy of 8 TeV. The data was recorded by
the CMS experiment at the LHC and corresponds to an integrated
luminosity of 19.7 ±0.5 fb-1 . Events are selected
with two oppositely charged leptons (ℓ=e , μ ) and two jets
identified as originating from b quarks. The analysis is based on three
kinematic observables whose distributions are sensitive to the value of
Mt. An invariant mass observable, Mb ℓ, and a
"stransverse mass" observable, MT 2, are employed in a
simultaneous fit to determine the value of Mt and an overall
jet energy scale factor (JSF). A complementary approach is used to
construct an invariant mass observable, Mb ℓν, that is
combined with MT 2 to measure Mt. The shapes of
the observables, along with their evolutions in Mt and JSF,
are modeled by a nonparametric Gaussian process regression technique.
The sensitivity of the observables to the value of Mt is
investigated using a Fisher information density method. The top quark
mass is measured to be 172.22 ±0.18 (stat )
-0.93+0.89(syst ) GeV .