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Related papers: $W$ helicity and constraints on the $Wtb$ vertex a…

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An overview of experimental determinations of different CKM elements is given with an emphasis on |Vub| and |Vcb| extraction. Measurements are compared to the Standard Model predictions and constraints on the unitarity triangle, arising…

High Energy Physics - Experiment · Physics 2008-11-26 B. Golob

We study the prospects of measuring the CKM matrix element $\vert V_{ts}\vert$ at the LHC with the top quarks produced in the processes $p p \to t\bar{t}X$ and $p p \to t/\bar{t} X$, and the subsequent decays $t \to W^+s$ and $\bar{t} \to…

High Energy Physics - Phenomenology · Physics 2014-11-21 Ahmed Ali , Fernando Barreiro , Theodota Lagouri

The first measurement of the magnitude of the CKM quark mixing matrix element $|V_{cb}|$ using on-shell $W$-boson decays is presented. The measurement is made with $t\bar{t}$ events from $pp$ collision data corresponding to an integrated…

High Energy Physics - Experiment · Physics 2026-03-18 ATLAS Collaboration

Most recent results of $W$ boson mass measurements from Tevatron experiments (CDF and D0) in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ GeV are reported, using $0.2 fb^{-1}$ and $1.0 fb^{-1}$ data collected at CDF and D0, respectively. The…

High Energy Physics - Experiment · Physics 2019-08-15 Alex Melnitchouk

Most recent measurements of properties of $W$ and $Z$ gauge bosons at hadron colliders are presented. The measurements were performed by ATLAS, CMS, and LHCb collaborations with proton-proton collisions at the LHC and by CDF and D0…

High Energy Physics - Experiment · Physics 2011-11-14 Alex Melnitchouk for ATLAS , CDF , CMS , D0 , LHCb Collaborations

After many years searching for electroweak production of top quarks, the Tevatron collider experiments have now moved from obtaining first evidence for single top quark production to an impressive array of measurements that test the…

High Energy Physics - Experiment · Physics 2008-09-08 A. P. Heinson

The measurement of the CP violation in the b-meson system and of b-meson rare decays provides information about the electroweak symmetry breaking in terms of flavour structure of the CKM matrix and flavour changing neutral currents. The…

High Energy Physics - Experiment · Physics 2019-08-14 N. D'Ascenzo

Recently, the CDF experiment at the Fermilab Tevatron has used complementary methods to make multiple measurements of the singly produced top quark cross section. All analyses use the same dataset with more than 2 fb^-1 of CDF data and…

High Energy Physics - Experiment · Physics 2008-10-10 R. C. Group , C. I. Ciobanu , K. Lannon , C. Plager

Single top quark production via the electroweak interaction was observed by the D0 and CDF collaborations at the Tevatron proton-antiproton collider at Fermilab. Multivariate analysis techniques are employed to extract the small single top…

High Energy Physics - Experiment · Physics 2010-09-29 Reinhard Schwienhorst

We present first evidence for the production of single top quarks at the Fermilab Tevatron {\ppbar} collider. Both D0 and CDF experiments have measured the single top production cross section with a 3-standard-deviation significance using…

High Energy Physics - Experiment · Physics 2019-08-14 Supriya Jain

A summary of studies of electroweak top-quark production performed by the CMS collaboration is presented. The results include measurements of production cross sections, extraction of the value of $|V_{tb}|$, determination of W-boson…

High Energy Physics - Experiment · Physics 2019-08-13 Andrey Popov

We use the transverse momentum spectrum of leptons in the decay chain t-->bW with W-->l nu to measure the helicity of the W bosons in the top quark rest frame. Our measurement uses a ttbar sample isolated in 106 +/- 4 inverse picobarns of…

High Energy Physics - Experiment · Physics 2010-05-12 CDF Collaboration , T. Affolder

We present a measurement of the helicity of the W boson produced in top quark decays using \ttbar ~decays in the $\ell+$jets and dilepton final states selected from a sample of 5.4 fb$^{-1}$ of collisions recorded using the D0 detector at…

High Energy Physics - Experiment · Physics 2011-10-14 Amitabha Das

The W-boson helicity fractions in top-quark decays are measured with ttbar 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…

High Energy Physics - Experiment · Physics 2013-12-17 CMS Collaboration

We review recent measurements of the properties of the top quark: the decay width of the top quark, of spin correlations between the top and the antitop quarks in $\ttbar$ production, the $W$ boson helicity in top decays, the strong colour…

High Energy Physics - Experiment · Physics 2019-08-14 Oleg Brandt

The combination of the latest and most precise measurements of several top quark properties is presented in this paper in order to establish allowed regions on anomalous contributions to the Lorentz structure of the $Wtb$ vertex. These…

High Energy Physics - Phenomenology · Physics 2019-03-25 Frédéric Déliot , Miguel C. N. Fiolhais , António Onofre

We present recent results of single top quark production in the lepton plus jet final state, performed by the CDF and D0 collaborations based on 7.5 and 5.4/fb of ppbar collision data collected at sqrt(s) = 1.96 TeV from the Fermilab…

High Energy Physics - Experiment · Physics 2012-05-18 Zhenbin Wu

This paper reviews the latest results from the Tevatron on W and Z physics, and their use as probes of QCD.

High Energy Physics - Experiment · Physics 2007-05-23 Gavin Hesketh

A summary of WG II of the CKM 2018 conference on semileptonic and leptonic $b$-hadron decays is presented. This includes discussions on the CKM matrix element magitudes $|V_{ub}|$ and $|V_{cb}|$, lepton universality tests such as $R(D^{*})$…

High Energy Physics - Experiment · Physics 2019-02-26 Christopher Bouchard , Lu Cao , Patrick Owen

New results from the CDF Collaboration on the invariant mass distribution of dijet events observed at the Tevatron are used to constrain the masses and couplings of new gauge bosons ($W'$ and $Z'$) as well as fundamental diquarks which can…

High Energy Physics - Phenomenology · Physics 2008-11-26 Thomas G. Rizzo