P Bartalini

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We establish the existence of the top quark using a 67 pb ?1 data sample of pp collisions at p s = 1.8 TeV collected with the Collider Detector at Fer-milab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with t t decay to W W b b, but inconsistent with the background prediction by 4:8. Additional(More)
We establish the existence of the top quark using a 67 pb ' data sample of pp collisions at ~s = 1.8 TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt decay to WWbb, but inconsistent with the background prediction by 4.8o.. Additional evidence for(More)
We present the results of a search for the top quark in 19.3 pb ?1 of p p collisions at p s = 1.8 TeV. The data were collected at the Fermilab Tevatron collider using the Collider Detector at Fermilab (CDF). The search includes Standard Model t t decays to nal states eee , eee , and as well as e + + jets or + + jets. In the (e,) + + jets channel we search(More)
  • S Amato, D Carvalho, P Colrain, T Da Silva, J R T De Mello, L De Paula +494 others
  • 2000
This Technical Design Report is dedicated to Tom Ypsilantis. Tom conceived the Ring Imaging Cherenkov detectors for particle identification in LHCb and he made an inestimable contribution to the LHCb RICH project. Tom would have wished to see these detectors in operation. He was totally dedicated to the project. He will be missed by the RICH group for his(More)
  • S Abdullin, D Acosta, P Bartalini, R Cavanaugh, A Drozdetskiy, G Karapostoli +4 others
  • 2006
This paper presents GARCON program, illustrating its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional phase space. The program has been successfully used by a number of very different analyses presented in the CMS Physics Technical Design(More)
We report the measurements of correlations between event-by-event fluctuations of amplitudes of anisotropic flow harmonics in nucleus-nucleus collisions, obtained for the first time using a new analysis method based on multiparticle cumulants in mixed harmonics. This novel method is robust against systematic biases originating from nonflow effects and by(More)
The pseudorapidity density of charged particles, dN_{ch}/dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sqrt[s_{NN}]=5.02  TeV. For the 5% most central collisions, we measure a value of 1943±54. The rise in dN_{ch}/dη as a function of sqrt[s_{NN}] is steeper than that observed in proton-proton(More)
A measurement of the underlying activity in scattering processes with p T scale in the GeV region is performed in proton–proton collisions at √ s = 0.9 TeV, using data collected by the CMS experiment at the LHC. Charged particle production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles(More)
  • Collaboration P L, Achard, O Adriani, M Aguilar-Benitez, M Van Den Akker Ag, J Alcaraz +418 others
  • 2004
The absolute muon flux between 20 and 3000 GeV is measured with the L3 magnetic muon spectrometer for zenith angles ranging from 0 • to 58 •. Due to the large exposure of about 150 m 2 sr d, and the excellent momentum resolution of the L3 muon chambers, a precision of 2.3% at 150 GeV in the vertical direction is achieved. The ratio of positive to negative(More)