Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from tt production at the Tevatron
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00451994" target="_blank" >RIV/68378271:_____/15:00451994 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.92.052007" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.92.052007</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.92.052007" target="_blank" >10.1103/PhysRevD.92.052007</a>
Alternative languages
Result language
angličtina
Original language name
Simultaneous measurement of forward-backward asymmetry and top polarization in dilepton final states from tt production at the Tevatron
Original language description
We present a simultaneous measurement of the forward-backward asymmetry and the top-quark polarization in tt production in dilepton final states using 9.7??fb-1 of proton-antiproton collisions at s=1.96??TeV with the D0 detector. To reconstruct the distributions of kinematic observables we employ a matrix element technique that calculates the likelihood of the possible tt kinematic configurations. After accounting for the presence of background events and for calibration effects, we obtain a forward-backward asymmetry of Att=(15.06.4(stat)4.9(syst))% and a top-quark polarization times spin analyzing power in the beam basis of ?P=(7.210.5(stat)4.2(syst))%, with a correlation of -56% between the measurements. If we constrain the forward-backward asymmetry to its expected standard model value, we obtain a measurement of the top polarization of ?P=(11.39.1(stat)1.9(syst))%.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D: Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
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Volume of the periodical
92
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
"052007-1"-"052007-16"
UT code for WoS article
000361670200001
EID of the result in the Scopus database
2-s2.0-84943739654