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Featured researches published by G. Bertrand-Coremans.
Nuclear Physics | 1976
J. Blietschau; H. Deden; H. Faissner; F.J. Hasert; W. Krenz; D. Lanske; J. Morfin; M. Pohl; K. Schultze; H. Weerts; L. Welch; G. Bertrand-Coremans; M. Dewitt; H. Mulkens; J. Sacton; W. Van Doninck; D. Cundy; I. Danilchenko; D. Haidt; P. Musset; K. Myklebost; J.B.M. Pattison; D.H. Perkins; D. Pittuck; F. Romano; H. Wachsmuth; V. Brisson; B. Degrange; M. Haguenauer; L. Kluberg
Abstract In the Gargamelle neutrino experiment, three unambiguous candidates for the reaction ν μ + e − → ν μ e − have been observed corresponding to a cross section for a recoil electron energy within the range 0.3 e − GeV of 0.06 × 10 −41 E ν ( GeV ) cm 2 / electron . The calculated background is 0.44 ± 0.13 events and the probability that all three candidates could be due to this background is 1%.
Nuclear Physics | 1976
J. Blietschau; P. Heusse; E. Bellotti; L. Kluberg; H. Weerts; E. Fiorini; J.B.M. Pattison; S. Bonetti; C. Longuemare; D.H. Perkins; L.M. Chounet; J.P. Vialle; A. Pullia; D. Cundy; P. Petiau; J.L. Pinfold; B. Aubert; M.J. Esten; D. Pittuck; B. Degrange; P. Musset; L. Welch; G. Bertrand-Coremans; F.W. Bullock; J. Morfin; G. Myatt; C. Pascaud; Donatella Cavalli; L. Jauneau; I. Danilchenko
Abstract In the Gargamelle neutrino experiment, three unambiguous candidates for the reaction ν μ + e − → ν μ e − have been observed corresponding to a cross section for a recoil electron energy within the range 0.3 e − GeV of 0.06 × 10 −41 E ν ( GeV ) cm 2 / electron . The calculated background is 0.44 ± 0.13 events and the probability that all three candidates could be due to this background is 1%.
Physics Letters B | 1976
J. Blietschau; H. Deden; F.J. Hasert; W. Krenz; D. Lanske; J. Morfin; M. Pohl; H. Weerts; L. Welch; G. Bertrand-Coremans; H. Mulkens; J. Sacton; W. Van Doninck; D. Cundy; I. Danilchenko; D. Haidt; A. Lloret; C. Matteuzzi; P. Musset; K. Myklebost; J.B.M. Pattison; D.H. Perkins; D. Pittuck; F. Romano; H. Wachsmuth; A. Blondel; V. Brisson; B. Degrange; T. Francois; M. Haguenauer
Abstract In addition to one previously reported event, a second event, in which a positron is observed together with a strange particle and a negative muon, has been seen in the bubble chamber Gargamelle exposed to the CERN neutrino beam. The level of the background for this type of event is found to be very low. The data strongly indicate the existence of a new type of interaction leading to a charged lepton pair correlated with a strange particle in the final state. The interpretation of these two events in terms of production of a charmed hadron is presented.
Physics Letters B | 1973
T. Eichten; H. Deden; F.J. Hasert; W. Krenz; J. von Krogh; D. Lanske; J. Morfin; H. Weerts; G. Bertrand-Coremans; J. Sacton; W. Van Doninck; P. Vilain; Donald C Cundy; D. Haidt; M. Jaffre; G. Kalbfleisch; S. Natali; Paul Musset; J.B.M. Pattison; D.H. Perkins; A. Pullia; A. Rousset; W. Venus; H. Wachsmuth; V. Brisson; B. Degrange; Maurice Haguenauer; L. Kluberg; U. Nguyen-Khac; P. Petiau
Abstract The total cross-sections for v e ( v e ) -nucleon scattering have been measured. A test has been made of the muon number conservation law. A limit of 2.4 GeV is found the mass of the “Georgi-Glashow type” heavy lepton
Physics Letters B | 1973
T. Eichten; A. Rousset; E. Bellotti; C. Conta; C. Baltay; John McKenzie; P. Heusse; U. Nguyen-Khac; L. Kluberg; H. Weerts; E. Fiorini; W. Venus; J.B.M. Pattison; L.M. Chounet; S. Bonetti; D.H. Perkins; D. Lanske; P. Vilain; M. Haguenauer; V. Brisson; D. Cundy; P. Petiau; J.L. Pinfold; G. Kalbfleisch; G. Bertrand-Coremans; M.J. Esten; B. Degrange; P. Musset; C. Franzinetti; J.P. Vialle
Abstract The total cross-sections for v e ( v e ) -nucleon scattering have been measured. A test has been made of the muon number conservation law. A limit of 2.4 GeV is found the mass of the “Georgi-Glashow type” heavy lepton
Physics Letters B | 1975
H. Deden; F.J. Hasert; W. Krenz; J. von Krogh; D. Lanske; J. Morfin; M. Pohl; K. Schultze; H. Weerts; G. Bertrand-Coremans; M. Goossens; H. Mulkens; J. Sacton; W. Van Doninck; P. Vilain; H. Burmeister; D. Cundy; D. Haidt; A. Lloret; P. Musset; J.B.M. Pattison; D.H. Perkins; F. Romano; A. Rousset; H. Wachsmuth; L. Behr; V. Brisson; A. Comtet; B. Degrange; M. Haguenauer
Abstract Data is given for single and multiple strange particle production in neutrino reactions in both charged and neutral current channels. A total of 15000 neutrino and antineutrino events has been examined for possible evidence of semi-leptonic decay of a charmed particle. One candidate has been observed. Upper limits on charmed particle production cross-sections are given as a function of the neutrino energy and the invariant mass of the final state hadrons.
Physics Letters B | 1977
H. Deden; F.J. Hasert; W. Krenz; D. Lanske; J. Morfin; M. Pohl; K. Schultze; L. Welch; G. Bertrand-Coremans; H. Mulkens; J. Sacton; W. Van Doninck; H. Burmeister; I. Danilchenko; D. Haidt; P. Jobin; C. Matteuzzi; P. Musset; K. Myklebost; J.B.M. Pattison; D.H. Perkins; D. Pittuck; F. Romano; D. Waldren; A. Blondel; V. Brisson; B. Degrange; T. Francois; M. Haguenauer; U. Nguyen-Khac
Abstract New results are presented of an analysis of pictures taken during an exposure of Gargamelle to the CERN ν beam in 1975. In addition to three ν μ +N→ μ − +e + +V 0 + hadrons events previously reported, an excess is found of events of the type ν μ +N→ μ − +e + + hadrons without V 0 . An analysis of strange particle production in charged current events suggests a possible violation of the ΔS = ΔQ rule. Interpreted in terms of charm production, the data permit an estimate of branching ratios and production rate of charmed particles. A limit is also placed on charmed particle production by neutral currents.
European Physical Journal C | 1979
D.C. Colley; G. Jones; S. W. O'Neale; S.J. Sewell; G. Bertrand-Coremans; H. Mulkens; J. Sacton; V. Brisson; T. Francois; P. Petiau; H. H. Bingham; W. Cameron; J. Guy; A.G. Michette; M. Tyndel; W. Venus; J. Alitti; J.P. Baton; G. Gerbier; M. Iori; C. Kochowski; M. Neveu
Charged-current neutrino and antineutrino interaction cross sections have been measured in the energy range 10 to 50 GeV using BEBC filled with a neon-hydrogen mixture. At these energies, σ/E was measured to be (0.73±0.08) 10−38 cm2/GeV per nucleon for neutrinos and (0.32±0.06) 10−38 cm2/GeV per nucleon for antineutrinos.
Z. Phys. C | 1979
D.C. Colley; Brisson; Jean-Pierre Baton; G. Jones; G. Gerbier; W. Cameron; J. Sacton; M. Iori; A.G. Michette; T. Francois; G. Bertrand-Coremans; H. Mulkens; J. Alitti; J. Guy; W. Venus; S. W. O'Neale; S.J. Sewell; Claude Kochowski; M. Tyndel; M. Neveu; Harry H Bingham; P. Petiau
Charged-current neutrino and antineutrino interaction cross sections have been measured in the energy range 10 to 50 GeV using BEBC filled with a neon-hydrogen mixture. At these energies, σ/E was measured to be (0.73±0.08) 10−38 cm2/GeV per nucleon for neutrinos and (0.32±0.06) 10−38 cm2/GeV per nucleon for antineutrinos.
European Physical Journal C | 1984
P. Marage; G. Gerbier; J. Guy; C. Kochowski; M. Aderholz; N. Armenise; T. Azemoon; J.H. Bartley; J.P. Baton; Daniel Bertrand; G. Bertrand-Coremans; V. Brisson; F.W. Bullock; M. Calicchio; E.F. Clayton; T. Coghen; A. M. Cooper; L. Deck; O. Erriquez; P. Faulkener; M.T. Fogli-Muciaccia; P. O. Hulth; G. Iaselli; G. Jones; P. Kasper; M. Lagraa; S. Leighton-Davis; R. P. Middleton; D.B. Miller; M. M. Mobayyen
A study is presented of μe events from an exposure of BEBC, filed with an heavyH2/Ne mixture, to a wide band antineutrino beam at the CERN SPS. The promptμ+e− rate, based on the observation of 45 events withpμ>4 GeV/c andpe>0.8 GeV/c, is found to be 0.31±0.05±0.02%, in agreement with previous determinations made on much smaller statistics. The differential kinematical variables characterizing the events and the content of strange particles are as expected for the production of charmed hadrons which subsequently decay semi-leptonically. An upper limit of 2.0±10−4 at 90% C.L. is given for the production rate of promptμ+e+ events. No evidence is found for a significant production of Beauty hadrons.
