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Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Gonzá,lez, B. Á,lvarez,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2008 PHYSICAL REVIEW D - Vol.78 No.3
First simultaneous measurement of the top quark mass in thelepton+jetsand dilepton channels at CDF
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Gonzá,lez, B. Á,lvarez,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.9
First measurement of the ratio of branching fractionsB(Λb0→Λc+μ−ν¯μ)/B(Λb0→Λc+π−)
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.3
Global search for new physics with2.0 fb−1at CDF
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Gonzá,lez, B. Á,lvarez,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.1
Measurement of the fraction oftt¯production via gluon-gluon fusion inpp¯collisions ats=1.96 TeV
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.3
Observation of Exclusive Charmonium Production andγγ→μ+μ−inpp¯Collisions ats=1.96 TeV
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Á,lvarez Gonzá,lez, B.,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 Physical Review Letters Vol.102 No.24
<P>In CDF we have observed the reactions p + p[over] --> p + X + p[over], with X being a centrally produced J/psi, psi(2S), or chi_{c0}, and gammagamma-->micro;{+}micro;{-} in pp[over] collisions at sqrt[s] = 1.96 TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, gamma + p --> J/psi(psi(2S)) + p, observed here for the first time in hadron-hadron collisions. We also observe exclusive chi_{c0} --> J/psi + gamma. The cross sections dsigma/dy|_{y = 0} for J/psi, psi(2S), and chi_{c0} are 3.92 +/- 0.25(stat) +/- 0.52(syst) nb, 0.53 +/- 0.09(stat) +/- 0.10(syst) nb, and 76 +/- 10(stat) +/- 10(syst) nb, respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive J/psi production.</P>
Inclusive Search for Squark and Gluino Production inpp¯Collisions ats=1.96 TeV
Aaltonen, T.,Adelman, J.,Akimoto, T.,Albrow, M. G.,Gonzá,lez, B. Á,lvarez,Amerio, S.,Amidei, D.,Anastassov, A.,Annovi, A.,Antos, J.,Apollinari, G.,Apresyan, A.,Arisawa, T.,Artikov, A.,Ashm American Physical Society 2009 Physical Review Letters Vol.102 No.12
<P>We report on a search for inclusive production of squarks and gluinos in pp[over ] collisions at sqrt[s]=1.96 TeV, in events with large missing transverse energy and multiple jets of hadrons in the final state. The study uses a CDF Run II data sample corresponding to 2 fb(-1) of integrated luminosity. The data are in good agreement with the standard model predictions, giving no evidence for any squark or gluino component. In an R-parity conserving minimal supergravity scenario with A(0)=0, mu<0, and tanbeta=5, 95% C.L. upper limits on the production cross sections in the range between 0.1 and 1 pb are obtained, depending on the squark and gluino masses considered. For gluino masses below 280 GeV/c(2), arbitrarily large squark masses are excluded at the 95% C.L., while for mass degenerate gluinos and squarks, masses below 392 GeV/c(2) are excluded at the 95% C.L.</P>