M. J. Price
CERN
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Featured researches published by M. J. Price.
EPL | 1989
M. Aglietta; G. Battistoni; E. Bellotti; C. Bloise; G. Bologna; C. Broggini; P. Campana; C. Castagnoli; A. Castellina; V. Chiarella; O. Cremonesi; D. Cundy; B. D'Ettorre Piazzoli; E. Fiorini; W. Fulgione; P. Galeotti; E. Iarocci; Christopher D. Liguori; G. Mannocchi; G.P. Murtas; P. Negri; G. Nicoletti; P. Picchi; M. J. Price; A. Pullia; S. Ragazzi; O. Saavedra; L. Satta; S. Vernetto; L. Zanotti
The fully contained events detected in the NUSEX nucleon stability experiment have been analysed to search for possible anomalies in the fluxes of atmospheric neutrinos. The measured flux of muon neutrinos is in very good agreement with predictions and no anomaly has been found in the ratio between the rate of electron and muon neutrino events.
Physics Letters B | 1985
G. Battistoni; E. Bellotti; C. Bloise; G. Bologna; P. Campana; C. Castagnoli; A. Castellina; V. Chiarella; A. Ciocio; D. Cundy; B. D'Ettorre-Piazzoli; E. Fiorini; Piero Galeotti; E. Iarocci; C. Liguori; G. Mannocchi; G.P. Murtas; P. Negri; G. Nicoletti; P. Picchi; M. J. Price; A. Pullia; S. Ragazzi; M. Rollier; O. Saavedra; L. Satta; P. Serri; S. Vernetto; L. Zanotti
Abstract The analysis of angular and phase distribution is reported for high energy muons recorded in the NUSEX nucleon decay detector, located in the Mont Blanc tunnel at a depth of about 5000 hg of standard rock. Evidence is found for a signal correlated to the direction and time modulation of Cygnus X-3.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1986
G. Battistoni; E. Bellotti; C. Bloise; G. Bologna; P. Campana; C. Castagnoli; V. Chiarella; O. Cremonesi; D. Cundy; B. D'Ettorre Piazzoli; E. Fiorini; E. Iarocci; G. Mannocchi; G.P. Murtas; P. Negri; G. Nicoletti; P. Picchi; M. J. Price; A. Pullia; S. Ragazzi; M. Rollier; F. Ronga; O. Saavedra; L. Zanotti
Abstract We present in this paper the characteristics, trigger system and performance of the NUSEX detector, designed to study nucleon stability, running in the Mt. Blanc laboratory.
Physics Letters B | 1982
G. Battistoni; E. Bellotti; G. Bologna; P. Campana; C. Castagnoli; V. Chiarella; D. Cundy; D.D'Ettorre Piazzoli; E. Fiorini; E. Iarocci; G. Mannocchi; G.P. Murtas; P. Negri; G. Nicoletti; P. Picchi; M. J. Price; A. Pullia; S. Ragazzi; M. Rollier; O. Saavedra; L. Trasatti; L. Zanotti
Four events have been recorded in the Mont Blanc nucleon decay experiment with all tracks fully contained in the detector volume. Three of them can be easily interpreted as due to interactions of atmospheric neutrinos. On the contrary it has been evaluated that the fourth event is very unlikely to be due to a neutrinos or neutron interaction. This event is compatible with a nucleon decay.
Physics Letters B | 1983
G. Battistoni; E. Bellotti; G. Bologna; P. Campana; C. Castagnoli; V. Chiarella; A. Ciocio; D. Cundy; B. D'Etorre-Piazoli; E. Fiorini; Piero Galeotti; E. Iarocci; C. Liguori; G. Mannocchi; G.P. Murtas; P. Negri; G. Nicoletti; P. Picchi; M. J. Price; A. Pullia; S. Ragazzi; M. Rollier; O. Saavedra; L. Satta; L. Trasatti; L. Zanotti
Abstract Ten totally confined events have been found in the Mont-Blanc Nucleon Stability Experiment. While nine can be interpreted as interactions of atmospheric neutrinos, one could be a proton decay. Limits are given for nucleon stability, n- n oscillations, magnetic monopoles and monopole catalysis of nucleon decay.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1992
J. Ellett; Samim Erhan; P. Kreuzer; D. Lynn; M. Medinnis; P. Schlein; J. Zweizig; A. Czermak; G. Engelmann; O. Klingsheim; K. Ley; M. J. Price; A. Rudge; Hartmut Wahl; P. Weilhammer; G. Borreani; W. Hofmann; B. Wilkens; M. Calvetti; M. Punturo; Y. Guz; Y. Ivanuschenkov; Cristina Biino; S. Palestini; L. Pesando; R. Harr; P. Karchin
Abstract Large apecture forward spectrometers with planar geometry perpendicular to the beam line are the natural detectors to accomodate the expected forward peaking of Beauty particle production at high energy hadron colliders. We have designed, built and tested a prototype planar silicon strip vertex detector for triggering such a spectrometer system. The test system consisted of 43 000 channels, configured in six planes, each with four quadrants, perpendicular to the beam line and installed inside the SPS-collider vacuum pipe at the center of an interaction region. Events recorded with the rf shield of the silicon system 1.5 mm from the circulating beams show negligible event-unrelated background.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2002
M. J. Price
Abstract The construction of the Large Hadron Collider (LHC) and its associated experiments is well advanced. Novel superconducting technology is used to achieve the colliders unprecedented centre-of-mass energy. Two general-purpose experiments, ATLAS and CMS, will search for the Higgs particle, which has not yet been convincingly observed, and study other unsolved aspects of the Standard Model. LHC will produce ion–ion collisions, for which a dedicated experiment, ALICE, is being built. LHCb is a forward collider detector to study CP violation and other phenomena in Beauty particle decays. TOTEM, partially housed inside CMS, will study physics in the very forward direction. MOEDAL, in the LHCb pit, is proposed to search for monopoles and other highly ionising exotic particles.
Physics Letters B | 1979
N. Armenise; O. Erriquez; M.T. Fogli-Muciaccia; S. Natali; S. Nuzzo; F. Romano; G. Bonneaud; H. Burmeister; G. Carnesecchi; M. Haguenauer; F. Lediberder; C. Matteuzzi; P. Musset; G. Poulard; M. J. Price; H. Sletten; J.P. Vialle; M. Willutzky; P. Alibran; A. Blondel; J. Bourotte; B. Degrange; J. Gillespie; F. Jacquet; U. Nguyen-Khac; S. Bonetti; Donatella Cavalli; E. Fiorini; A. Pullia; S. Ragazzi
Abstract The first observation of the reaction ν μ + e − → μ − + ν e has been made in the bubble chamber Gargamelle exposed to the CERN SPS wide-band neutrino beam. A signal of 26 ± 6 events has been found. This is 0.90 ± 0.20 times the prediction of the V - A theory.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1985
S. R. Amendolia; W. Blum; R. Benetta; M. Cherney; F. Fidecaro; J.P. Froberger; I. Lehraus; F. Liello; P. S. Marrocchesi; R. Matthewson; J. May; T. Meyer; E. Milotti; F. Nanni; A. Peisert; M. J. Price; F. Ragusa; J. Richstein; R. Richter; L. Rolandi; D. Schlatter; J.K. Sedgbeer; R. Settles; U. Stierlin; M. Takashima; W. Tejessey; J. Wells; W. Witzeling; W.M. Wu
Abstract We present some results on the use of a set of laser beams to monitor and to measure the systematic displacements of the electron drift trajectories in a Time Projection Chamber of large (0.6 m 3 ) dimensions.
Physics Letters B | 1995
L. Bertolotto; A. Buzzo; P. T. Debevec; D. Drijard; S. Easo; R. A. Eisenstein; W. Eyrich; T. Fearnley; H. Fischer; J. Franz; R. Geyer; N. Hamann; P. G. Harris; D. Hertzog; S.A. Gughes; A. Johansson; T. Johansson; R. T. Jones; Karsten Kilian; K. Kirsebom; A. Klett; H. Korsmo; M. Lo Vetere; M. Macri; M. Marinelli; M. Moosburger; B. Mouellic; W. Oelert; S. Ohlsson; A. Palano
Abstract The JETSET (PS202) experiment at CERN-LEAR searches for hadronic resonances by means of in-flight antiproton-proton annihilations in the reaction p p → φφ . In order to obtain sufficient luminosity and good final-state mass resolution, this experiment uses an internal hydrogen-cluster jet target intersecting the LEAR antiproton beam. We report on the study of the reaction p p → 4K ± at 1.4 GeV / c incident p momentum, and we present the first experimental observation of a stro φφ signal in this reaction.