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1.
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Teasing Jets in p-p Collisions at ISR Energies
/ Navarria, F L (Bologna U. ; INFN, Bologna) ; Darriulat, P ; Dittmann, P ; Eggert, K ; Holder, M ; McDonald, K T ; Modis, T ; Seiden, A ; Strauss, J ; Vesztergombi, G et al.
Recent evidence for jet-like structure in large $P_T$ events observed in the central region at the CERN Intersecting Storage Rings (ISR) is presented..
Orsay : , 1976 - 15 p.
- Published in : , pp. 229-243
Fulltext: PDF;
In : Colloques Internationaux du CNRS : La Physique des Anneaux de Collision, Flaine, France, 22 - 28 Fev 1976, pp.229-243
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2.
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Large transverse momentum photons from high energy proton proton collisions
/ Vesztergombi, G (CERN) ; Darriulat, Pierre (CERN) ; Dittmann, P (CERN) ; Eggert, Karsten (CERN) ; Holder, M (CERN) ; McDonald, K T (CERN) ; Modis, T (CERN) ; Navarria, Francesco Luigi (CERN) ; Seiden, A (CERN) ; Strauss, J (CERN) et al.
1977 - 3 p.
Published version: PDF;
In : 18th International Conference on High-energy Physics, v.1, Tbilisi, Georgia, 15 - 21 Jul 1976, pp.A4/6-8
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3.
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4.
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Proposal to study neutral meson decays and $\pi^{0} - \pi^{0}$ correlations in I7 in 1975
/ Darriulat, Pierre ; Dittmann, P ; Eggert, K ; Holder, M ; McDonald, K ; Modis, T ; Navarria, F ; Strauss, J ; Vesztergombi, G ; Williams, E G H
CERN-ISRC-74-42.
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1974. - 6 p.
Fulltext
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5.
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Performance of a magnetized total absorption calorimeter between 15 GeV and 140 GeV
/ Holder, M (CERN) ; Bloch, P (Saclay) ; Devaux, B (Saclay) ; Dorth, W (Heidelberg U.) ; Dydak, F (Heidelberg U.) ; Eisele, F (Dortmund U.) ; Flottmann, T (Heidelberg U.) ; Geweniger, C (Dortmund U.) ; Grimm, M (Saclay) ; Hepp, V (Heidelberg U.) et al.
The authors have calibrated a magnetized iron-scintillator sandwich calorimeter in a hadron beam, finding an energy resolution equal to 16% fwhm at 140 GeV with 4 cm sampling. The hadron energy resolution (fwhm/mean) improves as E/sup -1/2/ between 15 and 140 GeV. [...]
Geneva : CERN, 1978 - 40 p.
- Published in : Nucl. Instrum. Methods 151 (1978) 69-80
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6.
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Measurement of the $\Sigma^{0}$ lifetime
/ Dydak, F (CERN) ; Eisele, F (U. Dortmund) ; Geweniger, C (U. Dortmund) ; Kleinknecht, K (U. Dortmund) ; Navarria, Francesco Luigi (CERN) ; Overseth, O E (CERN) ; Steffen, P (CERN) ; Steinberger, J (CERN) ; Taureg, H (U. Heidelberg) ; Wahl, H (CERN) et al.
The Coulomb production of Sigma /sup 0/ hyperons on uranium and nickel nuclei has been measured in a beam of Lambda hyperons at the CERN Proton Synchrotron. The results for the Sigma /sup 0/ lifetime, tau = (0.58+or-0.13)*10/sup -19/ sec, and for the Sigma /sup 0/- lambda magnetic transition moment, mod mu mod =(1.82(+0.25, -0.18)) nuclear magnetons, are in agreement with SU(3) predictions. [...]
1977
- Published in : Nucl. Phys. B 118 (1977) 1-24
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7.
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A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
/ Zech, G ; Dydak, F ; Geweniger, C ; Kleinknecht, K ; Navarria, Francesco Luigi ; Overseth, O E ; Steffen, P ; Taureg, H ; Wahl, H ; Williams, E G H
The mean lifetimes of the Lambda and Xi /sup 0/ hyperons have been measured in a short neutral beam at the CERN Proton Synchrotron. Lambda and Xi /sup 0/ decays have been identified by measuring their decay products in a magnetic spectrometer and in a lead glass hodoscope. [...]
1977
- Published in : Nucl. Phys. B 124 (1977) 413-25
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8.
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Opposite sign dimuon events produced in narrow band neutrino and antineutrino beams
/ Holder, M (CERN) ; Bloch, P (Saclay) ; Devaux, B (Saclay) ; Dorth, W (Heidelberg U.) ; Dydak, F (Heidelberg U.) ; Eisele, F (Dortmund U.) ; Geweniger, C (Dortmund U.) ; Grimm, M (Saclay) ; Hepp, V (Heidelberg U.) ; Kleinknecht, K (Dortmund U.) et al.
On the basis of 315 dimuon events of opposite sign for which the nature (and energy) of the incident neutrino is known, and the momenta and hadronic energy are measured, the authors find a) very similar production by neutrinos and antineutrinos, and therefore confirmation of the GIM model for semileptonic weak interactions, b) energy spectra, excitation functions, angular correlations and transverse momentum distributions which are in remarkable agreement with the hypothesis of charm production and decay, c) evidence against models for which the second muon has a heavy lepton as origin, d) evidence against 'bottom' quark production by antineutrinos, e) the amount and the structure function for the strange quark-antiquark sea, and f) an approximate branching ratio, of 0.15 for the muonic decay of the semistable charmed meson..
PRINT-77-0547-CERN.-
1977
- Published in : Phys. Lett. B 69 (1977) 377-384
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9.
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Like-sign dimuon events produced in narrow-band neutrino and antineutrino beams
/ Holder, M ; Bloch, P ; Devaux, B ; Dorth, W ; Dydak, F ; Eisele, F ; Geweniger, C ; Grimm, M ; Hepp, V ; Kleinknecht, K et al.
Forty-seven events of the type nu +Fe to mu /sup -/+ mu /sup -/+X and nine events of the type nu +Fe to mu /sup +/+ mu /sup +/+X have been observed, and zero events with like-sign muons of the opposite sign. Most of the observed events can be attributed to the background of normal charged current events, in which one of the pions or kaons of the hadron shower decays, and so produces a second muon. [...]
1977
- Published in : Phys. Lett. B 70 (1977) 396-8
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10.
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Measurement of the neutral to charged current cross section ratio in neutrino and antineutrino interactions
/ Holder, M (CERN) ; Berthelot, A (Saclay) ; Bloch, p (Saclay) ; Devaux, B (Saclay) ; Dorth, W (Heidelberg U.) ; Dydak, F (Heidelberg U.) ; Eisele, F (Dortmund U.) ; Geweniger, C (Dortmund U.) ; Grimm, M (Saclay) ; Hepp, V (Heidelberg U.) et al.
The authors report on the analysis of inclusive neutral current events produced in neutrino and antineutrino narrow band beams. One finds for incident neutrino energies in the range 12-200 GeV and for hadron energies above 12 GeV a neutral charged current cross-section ratio of R/sub nu /=0.293+or-0.010 for incident neutrinos, and R/sub anti nu /=0.35+or-0.03 for antineutrinos. [...]
PRINT-77-0746-CERN.-
1977
- Published in : Phys. Lett. B 71 (1977) 222-6
Fulltext: PDF;
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