Accès ouvert
2000
article
OpenAlex
A. A. Affolder, H. Akimoto, A. Akopian, M. G. Albrow et autres
Top quark production offers the unique opportunity to search for a charged Higgs boson ${(H}^{\ifmmode\pm\else\textpm\fi{}}),$ as the contribution from $\stackrel{\ensuremath{\rightarrow}}{t}{H}^{+}\stackrel{\ensuremath{\rightarrow}}{b}{\ensuremath{\tau}}^{+}\ensuremath{\nu}b$ can be large in extensions of the standard model. We use results from a search for top quark pair production by the …
us, jp, it, tw, gb, fr, ru, ch, cz, ar, br, cn, no, ec, ca
(code pays fourni par la source)
Accès ouvert
2000
article
OpenAlex
T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow et autres
We report results from a study of events with a leading antiproton of beam momentum fraction 0.905 7 GeV. Using the dijet events, we evaluate the diffractive structure function of the antiproton and compare it with expectations based on results obtained in …
us, jp, it, tw, gb, ru, ch, ca
(code pays fourni par la source)
Accès ouvert
2000
article
OpenAlex
T. Affolder, H. Akimoto, A. Akopian, M G Albrow et autres
We report a measurement of the fraction of $b$ quarks produced diffractively in $\overline{p}p$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse momentum $9.5<{p}_{T}^{e}<20$ GeV/ $c$ …
us, es, it, tw, ru, ch
(code pays fourni par la source)
1999
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, M. Albrow et autres
The kinematic properties of $t\overline{t}$ events are studied in the $W+$multijet channel using data collected with the CDF detector during the 1992--1995 runs at the Fermilab Tevatron collider corresponding to an integrated luminosity of 109 pb${}^{\ensuremath{-}1}.$ Distributions of a variety of kinematic …
jp, us, it, tw, ca, ch
(code pays fourni par la source)
Accès ouvert
1998
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, M. Albrow et autres
We present an analysis of dilepton events originating from $t\overline{t}$ production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$ at the Fermilab Tevatron Collider. The sample corresponds to an integrated luminosity of $109\ifmmode\pm\else\textpm\fi{}7{\mathrm{pb}}^{\ensuremath{-}1}$. We observe nine candidate events, with an estimated background of $2.4\ifmmode\pm\else\textpm\fi{}0.5$ events. …
jp, us, it, tw, ch
(code pays fourni par la source)
1998
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, M. G. Albrow et autres
We search for the flavor-changing neutral current decays of the top quark $t\ensuremath{\rightarrow}q\ensuremath{\gamma}$ and $t\ensuremath{\rightarrow}\mathrm{qZ}$ (here $q$ represents the $c$ and $u$ quarks) in $\overline{p}p$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$. We use a dataset $(\ensuremath{\int}L\mathrm{dt}\ensuremath{\sim}110{\mathrm{pb}}^{\ensuremath{-}1})$ collected during the 1992--1995 run of the Collider Detector …
jp, us, it, tw, ch
(code pays fourni par la source)