Measurement of the W-boson helicity in top-quark decays from t(t)over-bar production in lepton plus jets events in pp collisions at root s=7 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10174029" target="_blank" >RIV/00216208:11320/13:10174029 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/JHEP10(2013)167" target="_blank" >http://dx.doi.org/10.1007/JHEP10(2013)167</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP10(2013)167" target="_blank" >10.1007/JHEP10(2013)167</a>

Result language

angličtina

Original language name

Measurement of the W-boson helicity in top-quark decays from t(t)over-bar production in lepton plus jets events in pp collisions at root s=7 TeV

Original language description

The W-boson helicity fractions in top-quark decays are measured with t (t) over bar events in the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb(-1). The measured fractions of longitudinal, left-, and right-handed helicity are F-0 = 0.682 +/- 0.030 (stat.) +/- 0.033 (syst.), F-L = 0.310 +/- 0.022 (stat.) +/- 0.022 (syst.), and F-R = 0.008 +/-0.012 (stat.) +/- 0.014 (syst.), consistent with the standard model predictions. The measured fractions are used to probe the existence of anomalous Wtb couplings. Exclusion limits on the real components of the anomalous couplings g(L), g(R) are also derived.

Czech name

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Czech description

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Type

J_x - 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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Project

<a href="/en/project/LG13031" target="_blank" >LG13031: Collaboration of the Czech Republic with CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

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Volume of the periodical

2013

Issue of the periodical within the volume

10

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

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UT code for WoS article

000326190800001

EID of the result in the Scopus database

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