نویسنده
Sirunyan, A. M., Işıldak, Bora
تاریخ انتشار
2017
محل انتشار
-
Springer International Publishing
موضوع
CMS, Physics, Top quark cross section, Top quark mass
نوع
دوره ای
زبان
انگلیسی
دیجیتال
بله
نسخه خطی
خیر
کتابخانه
دانشگاه اوزیغین
شناسه دارایی کتابخانه
1434-6044
شماره ثبت
e1892665-2154-49a8-9dae-f1215bf295d7
محل کتابخانه
Natural and Mathematical Sciences
تاریخ
2017
یادداشتها
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
متن نمونه
The first measurement of the jet mass mjetmjet of top quark jets produced in tt¯tt¯ events from pp collisions at s√=8s=8 TeVTeV is reported for the jet with the largest transverse momentum pTpT in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7 fb−1fb−1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t→bWt→bW with W→ℓνW→ℓν where ℓℓ is an electron or muon, are used to select tt¯tt¯ events with large Lorentz boosts. The products of the fully hadronic decay t→bWt→bW with W→qq¯¯¯′W→qq¯′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R=1.2R=1.2, and pT>400pT>400 GeVGeV. The tt¯tt¯ cross section as a function of mjetmjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the mjetmjet distribution is sensitive to the top quark mass mtmt, and the data are used to extract a value of mtmt to assess this sensitivity.
DOI
10.1140/epjc/s10052-017-5030-3
Cilt
77
