Measurement of the top quark mass in the dilepton channel using mT2 at CDF

Show full item record



Permalink

http://hdl.handle.net/10138/24084

Citation

Aaltonen , T , Mehtälä , P , Orava , R , Saarikko , H , Österberg , K & CDF Collaboration 2010 , ' Measurement of the top quark mass in the dilepton channel using mT2 at CDF ' , Physical Review D : Particles, Fields, Gravitation and Cosmology , vol. 81 , no. 3 , pp. 031102 . https://doi.org/10.1103/PhysRevD.81.031102

Title: Measurement of the top quark mass in the dilepton channel using mT2 at CDF
Alternative title: Top Quark Mass Measurement using mT2 in the Dilepton Channel at CDF
Author: Aaltonen, Timo; Mehtälä, Petteri; Orava, Risto; Saarikko, Heimo; Österberg, Kenneth; CDF Collaboration
Contributor organization: Department of Physics
Helsinki Institute of Physics
Date: 2010
Language: eng
Number of pages: 9
Belongs to series: Physical Review D : Particles, Fields, Gravitation and Cosmology
ISSN: 1550-7998
DOI: https://doi.org/10.1103/PhysRevD.81.031102
URI: http://hdl.handle.net/10138/24084
Abstract: We present measurements of the top quark mass using the \mT2, a variable related to the transverse mass in events with two missing particles. We use the template method applied to t\tbar dilepton events produced in p\pbar collisions at Fermilab's Tevatron and collected by the CDF detector. From a data sample corresponding to an integrated luminosity of 3.4 \invfb, we select 236 t\tbar candidate events. Using the \mT2 distribution, we measure the top quark mass to be M_{Top} = 168.0^{+4.8}_{-4.0} $\pm$ {2.9} GeV/c^{2}. By combining the \mT2 with the reconstructed top mass distributions based on a neutrino weighting method, we measure M_{top}=169.3 $\pm$ 2.7 $\pm$ 3.2 GeV/c^{2}. This is the first application of the \mT2 variable in a mass measurement at a hadron collider.We present measurements of the top quark mass using mT2, a variable related to the transverse mass in events with two missing particles. We use the template method applied to tt̅ dilepton events produced in pp̅ collisions at Fermilab’s Tevatron Collider and collected by the CDF detector. From a data sample corresponding to an integrated luminosity of 3.4  fb-1, we select 236 tt̅ candidate events. Using the mT2 distribution, we measure the top quark mass to be Mtop=168.0-4.0+4.8(stat)±2.9(syst)  GeV/c2. By combining mT2 with the reconstructed top quark mass distributions based on a neutrino weighting method, we measure Mtop=169.3±2.7(stat)±3.2(syst)  GeV/c2. This is the first application of the mT2 variable in a mass measurement at a hadron collider.
Description: Submitted to Phys. Rev. D
Subject: hep-ex
114 Physical sciences
Peer reviewed: Yes
Usage restriction: restrictedAccess


Files in this item

Total number of downloads: Loading...

Files Size Format View
0911.2956v3 327.4Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record