Accès ouvert
2018
article
OpenAlex
T. Aaltonen, V. M. Abazov, B. Abbott, B. S. Acharya et autres
The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets …
fi, ru, us, in, gb, it, sk, jp, cz, ua, co, fr, kr, br, de
(code pays fourni par la source)
Accès ouvert
2013
article
OpenAlex
T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov et autres
Drell-Yan lepton pairs are produced in the process $p\overline{p}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}+X$ through an intermediate ${\ensuremath{\gamma}}^{*}/Z$ boson. The lepton angular distributions are used to provide information on the electroweak-mixing parameter ${sin}^{2}{\ensuremath{\theta}}_{W}$ via its observable effective-leptonic ${sin}^{2}{\ensuremath{\theta}}_{W}$, or ${sin}^{2}{\ensuremath{\theta}}_{\mathrm{eff}}^{\mathrm{lept}}$. A new method to infer ${sin}^{2}{\ensuremath{\theta}}_{W}$ or, …
fi, it, us, sk, jp, ru, gb, kr, es, tw, ch
(code pays fourni par la source)
Accès ouvert
2008
article
OpenAlex
T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow et autres
We present measurements of the forward-backward charge asymmetry in top pair production using $1.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of …
fi, gb, us, it, ru, jp, sk, es, de, kr, tw, ch
(code pays fourni par la source)
Accès ouvert
2008
article
OpenAlex
T. Aaltonen, A. Abulencia, J. Adelman, T. Akimoto et autres
We report on a search for narrow-width particles decaying to a top and antitop quark pair. The data set used in the analysis corresponds to an integrated luminosity of $680\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ collected with the Collider Detector at Fermilab in run II. …
fi, us, jp, es, it, sk, ru, gb, ca, kr, Soudan, tw
(code pays fourni par la source)
Accès ouvert
2008
article
OpenAlex
T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow et autres
We present the first measurement of the production cross section of a $W$ boson with a single charm quark ($c$) in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$, using soft muon tagging of $c$ jets. In a data sample of $\ensuremath{\sim}1.8\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, …
fi, us, jp, es, it, sk, ru, gb, ca, kr, Soudan, tw
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
T. Aaltonen, A. Abulencia, J. Adelman, A. A. Affolder et autres
We report an observation of new bottom baryons produced in $p\overline{p}$ collisions at the Tevatron. Using $1.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected by the CDF II detector, we observe four ${\ensuremath{\Lambda}}_{b}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ resonances in the fully reconstructed decay mode ${\ensuremath{\Lambda}}_{b}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, where ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}p{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$. We …
fi, us, jp, it, sk, ru, es, gb, ca, ch, kr, tw
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
A. Abulencia, J. Adelman, T. Affolder, T. Akimoto et autres
We report the first measurement of the top quark mass using the decay length technique in $p\overline{p}$ collisions at a center-of-mass energy of 1.96 TeV. This technique uses the measured flight distance of the $b$ hadron to infer the mass of the …
us, jp, it, sk, ca, ru, gb, es, ch, mx, kr, tw
(code pays fourni par la source)
Accès ouvert
2001
article
OpenAlex
A. A. Affolder, H. Akimoto, A. Akopian, M. G. Albrow et autres
We measure the relative rate of production of orbitally excited $(L=1)$ states of B mesons ${(B}^{**})$ by observing their decays into $B{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}.$ We reconstruct B mesons through semileptonic decay channels using data collected in $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{TeV}.$ The fraction of light …
us, kr, jp, Éthiopie, it, tw, gb, ru, es, ch, ca
(code pays fourni par la source)
Accès ouvert
2000
article
OpenAlex
A. A. Affolder, H. Akimoto, A. Akopian, M. G. Albrow et autres
This paper reports an updated measurement of the standard model $\mathrm{CP}$ violation parameter $\mathrm{sin}2\ensuremath{\beta}$ using the CDF Detector at Fermilab. The entire run I data sample of $110 {\mathrm{pb}}^{\ensuremath{-}1}$ of proton-antiproton collisions at $\sqrt{s}=1.8 \mathrm{TeV}$ is used to identify a signal sample …
us, jp, it, tw, ru, ch, ca
(code pays fourni par la source)
Accès ouvert
1999
article
OpenAlex
A. A. Affolder, H. Akimoto, A. Akopian, M. G. Albrow et autres
The oscillation frequency $\ensuremath{\Delta}{m}_{d}$ of ${B}^{0}{B}^{0}$ mixing is measured using the partially reconstructed semileptonic decay ${B}^{0}\ensuremath{\rightarrow}{l}^{\ensuremath{-}}\overline{\ensuremath{\nu}}{D}^{*+}X.$ The data sample was collected with the CDF detector at the Fermilab Tevatron collider during 1992--1995 by triggering on the existence of two lepton candidates in …
us, jp, it, tw, ru, ch, ca
(code pays fourni par la source)