Accès ouvert
2002
article
OpenAlex
D. Acosta, A. A. Affolder, H. Akimoto, M. G. Albrow et autres
We report a measurement of the ratio of the bottom quark production cross section in antiproton-proton collisions at $\sqrt{s}=630 \mathrm{GeV}$ to 1800 GeV using bottom quarks with transverse momenta greater than 10.75 GeV identified through their semileptonic decays and long lifetimes. The …
us, jp, tw, ru, gb, it, ch
(code pays fourni par la source)
Accès ouvert
2002
article
OpenAlex
D. Acosta, A. A. Affolder, H. Akimoto, A. Akopian et autres
We present a search for the flavor-changing neutral current decay ${B}_{s}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\varphi}$ in $p\overline{p}$ collisions at $\sqrt{s}=1.8 \mathrm{TeV},$ using $91 {\mathrm{pb}}^{\ensuremath{-}1}$ of data collected at the Collider Detector at Fermilab (CDF). We find two candidate events for this decay, which are consistent with …
us, jp, tw, ru, gb, it, 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 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
A. A. Affolder, H. Akimoto, A. Akopian, Michael G. Albrow et autres
We present a measurement of the cross section for production of two or more jets as a function of dijet mass, based on an integrated luminosity of 86 ${\mathrm{pb}}^{\ensuremath{-}1}$ collected with the Collider Detector at Fermilab. Our dijet mass spectrum is described …
tw
(code pays fourni par la source)
Accès ouvert
2000
article
OpenAlex
T. Affolder, H. Akimoto, A. Akopian, Michael G. Albrow et autres
We present the results of a search for pair production of a fourth-generation charge $\ensuremath{-}\frac{1}{3}$ quark $({b}^{\ensuremath{'}})$ in $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\mathrm{TeV}$ $p\overline{p}$ collisions using $88{\mathrm{pb}}^{\ensuremath{-}1}$ of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay via the flavor-changing neutral …
us, jp, it, tw, gb, ru, ch, ca
(code pays fourni par la source)
1998
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, M. G. Albrow et autres
We report a measurement of the fraction of dijet events with a rapidity gap between jets produced by color-singlet exchange in $\overline{p}p$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}630\mathrm{GeV}$ at the Fermilab Tevatron. In events with two jets of transverse energy ${E}_{T}^{\mathrm{jet}}>8\mathrm{GeV}$, pseudorapidity in the range …
jp, us, it, tw, ch
(code pays fourni par la source)
Accès ouvert
1998
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, Michael G. Albrow et autres
We report on a search for second generation leptoquarks $({\ensuremath{\Phi}}_{2})$ using a data sample corresponding to an integrated luminosity of $110\mathrm{pb}{}^{\ensuremath{-}1}$ collected at the Collider Detector at Fermilab. We present upper limits on the production cross section as a function of ${\ensuremath{\Phi}}_{2}$ …
jp, us, it, tw, ch
(code pays fourni par la source)
Accès ouvert
1996
article
OpenAlex
F. Abe, H. Akimoto, A. Akopian, M. G. Albrow et autres
The lifetimes of the ${B}^{\ensuremath{-}}$ and ${\overline{B}}^{0}$ mesons are measured using the partially reconstructed semileptonic decays $\overline{B}\ensuremath{\rightarrow}D{\ensuremath{\ell}}^{\ensuremath{-}}\overline{\ensuremath{\nu}}X$, where D is either a ${D}^{0}$ or ${D}^{*+}$ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992--1993 and …
jp, us, it, tw, ca
(code pays fourni par la source)