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Article
Measurements of charged kaon semileptonic decay branching fractions K±→π0μ±ν and K±→π0e±ν and their ratio
Measured ratios of decay rates for \({\mathcal{R}}_{K e 3 / K2\pi}\) ,
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Article
Measurements of direct CP violation
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Article
Measurement of the K S mean lifetime from π+π− and π0π0 decays using K L decays to determine the acceptance
A precision measurement of the K S mean lifetime has been performed by comparing, in the same experimental setup, the distributions of two-pion decays of neutral kaons produced by high energy prot...
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Article
Measurement of the branching ratio of the double Dalitz decayK L →e+e−e+e− and the CP parity of theK L -meson
Data from the NA31 experiment at CERN have been used to measure the branching ratio of the double Dalitz decay of the long-lived neutral kaon. Eight events have been found with negligible background. The measu...
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Article
Determination of the branching ratiosΓ(K L→3π0)/Γ(K L→π+ - 0) andΓ(K L→3π0)/Γ(K L→πev)
Improved branching ratios were measured for theK L→3π0 decay in a neutral beam at the CERN SPS with the NA31 detector: $$\Gamma ({\rm ...
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Chapter and Conference Paper
First Evidence for Direct CP Violation
Since CP violation was first observed in the decay of the long-lived neutral kaon into two pions [1], it remains one of the enigmas in particle physics. Whilst CP violation is manifest in neutral kaon decays, ...
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Article
Direct-photon plus away-side jet production inpp collisions at \(\sqrt s = 63\) GeV and a determination of the gluon distribution
We have determined the double inclusive cross-section for opposite-side high-p T photons and away-side jets withθ γ ≈θ jet≈90° produced inpp ...
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Article
A study of the production of two direct photons inpp collisions at the CERN ISR
We have studied the processpp→γγ+X at \(\sqrt s = 63 GeV\) GeV in the central rapidity region. We report a positive...
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Article
Neutral K- \(\overline K \) mixing andCP violationmixing andCP violation
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Article
Production of π0 andη 0 at 11° inpp Collisions at \(\sqrt s = 63 GeV\)
The inclusive π0 production cross-section and the η/π0 ratio have been measured inpp collisions at \(\sqrt s = 63 GeV\) ...
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Article
High-p T direct photon production inpp collisions
Direct photon and neutral-pion production have been measured inpp collisions at the CERN ISR for 30< \(\sqrt s \) <63...
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Article
Search for massive photon pair production at the CERN intersecting storage rings
A search for massive photon pair production at \(\sqrt s = 63 GeV\) has been carried out on the data sample previou...
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Article
A study of the production of high-p t π0 at the CERN intersecting storage rings
The inclusive cross-section for π0 production near 90° inpp collisions at the CERN Intersecting Storage Rings has been studied for thep T range 3<p T ...
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Article
Reaction π-p→ωn in the (15÷40) GeV/c momentum rangein the (15÷40) GeV/c momentum range
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Article
Search for associated production of charmed particles in π-p collisions at 40 GeV
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Article
Recensioni
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Article
π−+p → K0+Λ/Σ0 associated production in the forward direction at 6, 8, 10 and 11.2 GeV/c
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Article
Hyperon and kaon production by 24.5 GeV/c protons on protons
An analysis is given of strange-particle production in collisions of 24.5 GeV/c protons with protons (c.m.s. total energy =6.72 GeV). It is based on 50 000 pictures taken with the CERN 30 cm hydrogen bubble ch...
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Article
Hyperon and kaon production by 16 GeV/c negative pions on protons
Strange particle production by 16 GeV/c negative pions in hydrogen has been studied. 60 000 pictures were taken with the CERN 32 cm hydrogen bubble chamber. The cross sections found for associated and K-K pair...
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Article
Measurement of the polarization of the recoil proton in γ+p → p +π0 using a propane-ethane bubble chamber
The polarization of the recoil proton in γ + p → p + π0 has been measured at photon energies of 725 MeV and 900 MeV for centerof-mass angles near 90° using a small propane-ethane gas bubble chamber. Protons emerg...
