scholarly journals Measurement of the proton-antiproton elastic and total cross section at a centre-of-mass energy of 540 GeV

1982 ◽  
Vol 117 (1-2) ◽  
pp. 126-130 ◽  
Author(s):  
R. Battiston ◽  
M. Bozzo ◽  
P.L. Braccini ◽  
F. Carbonara ◽  
R. Carrara ◽  
...  
2004 ◽  
Vol 19 (06) ◽  
pp. 794-807
Author(s):  
T. R. WYATT

The CDF and DØ detectors were fully commissioned for physics running in Run II at the Tevatron [Formula: see text] collider in early 2002. Since then both experiments have collected data samples corresponding to an integrated luminosity of around ∫L=200 pb -1 at a [Formula: see text] centre-of-mass energy of [Formula: see text]. Datasets corresponding ∫L=120 pb-1 have been analyzed for physics so far. Recent electroweak measurements from Run II are reviewed. Cross section times branching ratio measurements (σ· Br ) are presented for the intermediate vector bosons (IVB's) in their leptonic decay modes: W→ℓν and Z→ℓ+ℓ-. For the first time, a combination of the σ· Br results from the CDF and DØ experiments is made; this includes using a consistent choice of the total inelastic [Formula: see text] cross section for the luminosity determinations of the two experiments. Quantities derived from these σ· Br values are also updated. These include: R ℓ the ratio of the σ· Br values for W and Z; Br (W→ℓν), the leptonic branching ratio of the W; and Γw, the total decay width of the W. Other measurements using events containing W and Z leptonic decays are presented, including studies that probe the QCD phenomenology of W/Z production and searches for events containing two intermediate vector bosons.


1973 ◽  
Vol 44 (1) ◽  
pp. 112-118 ◽  
Author(s):  
U. Amaldi ◽  
R. Biancastelli ◽  
C. Bosio ◽  
G. Matthiae ◽  
J.V. Allaby ◽  
...  

2018 ◽  
Vol 2018 (6) ◽  
Author(s):  
R. Aaij ◽  
◽  
B. Adeva ◽  
M. Adinolfi ◽  
Z. Ajaltouni ◽  
...  

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 775-777
Author(s):  
◽  
THOMAS ALDERWEIRELD

Search for charginos and neutralinos are presented, based on the data samples recorded in 1999 and 2000 by the DELPHI detector at centre-of-mass energies from 192 to 209 GeV. No evidence for a signal was found. The lower chargino mass limits are 5-6 GeV /c2 higher than those obtained at a centre-of-mass energy of 189 GeV. The (μ, M 2) MSSM domain excluded by combining the chargino searches with neutralino searches at the Z resonance implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 37.6 GeV /c2 for tan β≥1. Upper limit at 95% CL on the neutralino production cross-section times branching fraction are derived.


1975 ◽  
Vol 13 (13) ◽  
pp. 485-488 ◽  
Author(s):  
G. Bardin ◽  
J. Duclos ◽  
J. Julien ◽  
A. Magnon ◽  
B. Michel ◽  
...  

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