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Title
Measurement of the Mass Difference Between Top and Anti-top Quarks at CDF
Author(s)
T. Aaltonen조기현
Publication Year
2013-03-18
Abstract
We present a measurement of the mass difference between top (t) and antitop (t¯) quarks using tt¯ candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron s=1.96  TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7  fb-1. We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields ΔMtop=Mt-Mt¯=-1.95±1.11(stat)±0.59(syst)  GeV/c2 and is in agreement with the standard model prediction of no mass difference.
Keyword
High Energy Physics; Particle Physics; belle
Journal Title
Physical review. D, Particles and fields
ISSN
1550-7998
DOI
10.1103/PhysRevD.87.052013
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14159
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