Measurement of the top quark mass in the all- jets final state at root s=13 TeV and combination with the lepton plus jets channel
A top quark mass measurement is performed using 35.9fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV. The measurement uses the t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
Springer New York LLC
2019
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79893/1/79893_Measurement%20of%20the%20top%20quark%20mass%20in%20the%20all-jets_article.pdf http://irep.iium.edu.my/79893/2/79893_Measurement%20of%20the%20top%20quark%20mass%20in%20the%20all-jets_scopus.pdf http://irep.iium.edu.my/79893/3/79893_Measurement%20of%20the%20top%20quark%20mass%20in%20the%20all-jets_wos.pdf http://irep.iium.edu.my/79893/ https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-6788-2.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | A top quark mass measurement is performed using 35.9fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV. The measurement uses the t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (m t ) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt=172.34±0.20(stat+JSF)±0.70(syst)GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the t t ¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an m t measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined m t extraction from the lepton+jets and all-jets channels through a single likelihood function. |
|---|