scholarly journals Measurement of the Forward-Backward Asymmetry in Top-Antitop Quark Events in the Lepton+Jets Channel at D0

2012 ◽  
Author(s):  
Douglas Andrew Orbaker
Keyword(s):  
Lepton Jets ◽  
Antitop Quark

Supersymmetric versus standard model sources of lepton + jets + missing momentum events

1985 ◽  
Vol 159 (2-3) ◽  
pp. 195-200
Author(s):  
A.P. Contogouris ◽  
H. Tanaka ◽  
S.D.P. Vlassopulos
Keyword(s):  
Standard Model ◽  
Missing Momentum ◽  
Lepton Jets

MEASUREMENT OF THE TOP QUARK PAIR PRODUCTION CROSS SECTION IN LEPTON+JETS FINAL STATES AT DØ USING A MULTIVARIATE TECHNIQUE

2005 ◽  
Vol 20 (14) ◽  
pp. 3177-3179
Author(s):  
◽  
TOBIAS GOLLING
Keyword(s):  
Pair Production ◽  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Production Cross ◽  
Final States ◽  
Multivariate Technique ◽  
Text Production ◽  
Lepton Jets ◽  
Pair Production Cross Section

A measurement of the [Formula: see text] production cross-section at [Formula: see text] with the DØ detector at the Fermilab Tevatron, based on the application of a multivariate topological method is presented. The integrated luminosity corresponds to 143.9 pb-1 in the μ+jets and 141.2 pb-1 in the e+jets channel. The preliminary cross-section is measured to be [Formula: see text].

Helicity of the W in Single-Lepton $t\bar{t}$ Events

2003 ◽  
Vol 18 (supp01) ◽  
pp. 304-319
Author(s):  
Florencia Canelli
Keyword(s):  
Maximum Likelihood ◽  
Maximum Likelihood Method ◽  
W Boson ◽  
W Bosons ◽  
Likelihood Method ◽  
Final States ◽  
Left Handed ◽  
Lepton Jets

We have developed a procedure to study the helicity of the W boson in [Formula: see text] events. Using events generated with the PYTHIA program at a top Mt = 175 GeV/c2, we employ a maximum likelihood method to extract the fraction of right-handed, longitudinal and left-handed W bosons in top decays. Assuming V–A coupling in the decay, we obtain a longitudinal fraction of 0.696±0.097 for 50 simulated experiments of 100 events in lepton+jets [Formula: see text] final states, a result that is consistent with the input fraction of 0.703.

scholarly journals Search for pair production of excited top quarks in the lepton + jets final state

2018 ◽  
Vol 778 ◽  
pp. 349-370 ◽  
Author(s):  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
E. Asilar ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quarks ◽  
Final State ◽  
Lepton Jets
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