Combination of CDF and D0 measurements of the W boson helicity in top quark decay

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00398951" target="_blank" >RIV/68378271:_____/12:00398951 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevD.85.071106" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.85.071106</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.85.071106" target="_blank" >10.1103/PhysRevD.85.071106</a>

Result language

angličtina

Original language name

Combination of CDF and D0 measurements of the W boson helicity in top quark decay

Original language description

We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7 - 5.4 fb^-1 of ppbar collisions collected duringRun II of the Fermilab Tevatron Collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f0) and right-handed (f+) helicities, we find f0 = 0.722 /pm 0.081 [/pm 0.062 (stat.) /pm 0.052 (syst.)] and f+ =-0.033 /pm 0.046 [/pm 0.034 (stat.) /pm 0.031 (syst.)]. Combining measurements where one of the helicity fractions is fixed to the value expected in the standard model, we find f0 = 0.682 /pm 0.057 [/pm 0.035 (stat.) /pm 0.046 (syst.)] and f+ = -0.015/pm0.035 [/pm 0.018 (stat.) /pm 0.030 (syst.)]. The results are consistent with standard model expectations.

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

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

<a href="/en/project/LG12006" target="_blank" >LG12006: Collaboration on NOvA and D0 Experiments at Fermi National Laboratory, USA</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

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

85

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

"071106-1"-"071106-11"

UT code for WoS article

000303310000001

EID of the result in the Scopus database

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