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A study of multi-jet events at the CERN p collider and a search for double parton scattering
A study of events containing at least four high transverse momentum jets and a search for double parton scattering (DPS) have been performed using data collected with the UA2 detector at the CERN ppExpand
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A search for new intermediate vector bosons and excited quarks decaying to two-jets at the CERN p̄p collider
Abstract The two-jet invariant mass spectrum as measured in the UA2 experiment is used to search for additional heavy vector bosons decaying to two-jets. The mass of an additional W boson thatExpand
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  • Open Access
An improved determination of the ratio of W and Z masses at the CERN p collider
Abstract The W and Z bosons masses, mw and mz, are measured using saing samples of W→ev and Z→e+e− decays observed in p p collisions at √s=630 GeV. The ration is found to be m w m z =0.8813±0.0036 ±Expand
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  • Open Access
A MEASUREMENT OF SINGLE AND DOUBLE PROMPT PHOTON PRODUCTION AT THE CERN P(BAR)P COLLIDER
Abstract A measurement of the cross-sections for single and double prompt photon production in p p interactions at s = 630 GeV is presented. The data sample corresponds to an integrated luminosity ofExpand
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A measurement of electron-tau universality from decays of intermediate vector bosons at the CERN $$\bar pp$$ collider
AbstractThe ratio of branching fractions of theW decaying to τ ande leptons is measured using $$\bar pp$$ collisions at $$\sqrt s = 630$$ GeV. The ratio of the electroweak charged current couplingsExpand
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Inclusive Charged Particle Production at the CERN anti-p p Collider
Abstract Transverse momentum distributions of pions, kaons and protons have been measured around 90° in the UA2 detector at the SPS p p collider, at a CM energy of 540 GeV. All the cross sectionsExpand
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Inclusive π0 production from high-energy p-p collisions at very large transverse momenta
Abstract We report on measurements of inclusive π 0 production at c.m. energies of 53 and 63 GeV, θ ≅90°, from p-p collisions at the CERN ISR. In the range 0.2 x t Ed 3 σ d p 3 ∝p − (6.6±0.8) t (1−xExpand
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Observation of high transverse momentum electrons at the CERN ISR
Abstract A search for high transverse momentum electrons directly produced in proton-proton collisions has been performed at the CERN ISR. The apparatus included a magnetic spectrometer with wireExpand
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On the production of charmed mesons in high-energy proton-proton collisions
Abstract We perform an analysis of lepton-pair data collected at the CERN ISR at centre-of-mass energies √ s = 53 and 63 GeV in three different configurations. We find that a large fraction of theExpand
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